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• What Is Critical Thinking? | Definition & Examples

What Is Critical Thinking? | Definition & Examples

Published on May 30, 2022 by Eoghan Ryan . Revised on May 31, 2023.

Critical thinking is the ability to effectively analyze information and form a judgment .

To think critically, you must be aware of your own biases and assumptions when encountering information, and apply consistent standards when evaluating sources .

Critical thinking skills help you to:

• Identify credible sources
• Evaluate and respond to arguments
• Assess alternative viewpoints
• Test hypotheses against relevant criteria

Table of contents

Why is critical thinking important, critical thinking examples, how to think critically, other interesting articles, frequently asked questions about critical thinking.

Critical thinking is important for making judgments about sources of information and forming your own arguments. It emphasizes a rational, objective, and self-aware approach that can help you to identify credible sources and strengthen your conclusions.

Critical thinking is important in all disciplines and throughout all stages of the research process . The types of evidence used in the sciences and in the humanities may differ, but critical thinking skills are relevant to both.

In academic writing , critical thinking can help you to determine whether a source:

• Is free from research bias
• Provides evidence to support its research findings
• Considers alternative viewpoints

Outside of academia, critical thinking goes hand in hand with information literacy to help you form opinions rationally and engage independently and critically with popular media.

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Critical thinking can help you to identify reliable sources of information that you can cite in your research paper . It can also guide your own research methods and inform your own arguments.

Outside of academia, critical thinking can help you to be aware of both your own and others’ biases and assumptions.

Academic examples

However, when you compare the findings of the study with other current research, you determine that the results seem improbable. You analyze the paper again, consulting the sources it cites.

You notice that the research was funded by the pharmaceutical company that created the treatment. Because of this, you view its results skeptically and determine that more independent research is necessary to confirm or refute them. Example: Poor critical thinking in an academic context You’re researching a paper on the impact wireless technology has had on developing countries that previously did not have large-scale communications infrastructure. You read an article that seems to confirm your hypothesis: the impact is mainly positive. Rather than evaluating the research methodology, you accept the findings uncritically.

Nonacademic examples

However, you decide to compare this review article with consumer reviews on a different site. You find that these reviews are not as positive. Some customers have had problems installing the alarm, and some have noted that it activates for no apparent reason.

You revisit the original review article. You notice that the words “sponsored content” appear in small print under the article title. Based on this, you conclude that the review is advertising and is therefore not an unbiased source. Example: Poor critical thinking in a nonacademic context You support a candidate in an upcoming election. You visit an online news site affiliated with their political party and read an article that criticizes their opponent. The article claims that the opponent is inexperienced in politics. You accept this without evidence, because it fits your preconceptions about the opponent.

There is no single way to think critically. How you engage with information will depend on the type of source you’re using and the information you need.

However, you can engage with sources in a systematic and critical way by asking certain questions when you encounter information. Like the CRAAP test , these questions focus on the currency , relevance , authority , accuracy , and purpose of a source of information.

When encountering information, ask:

• Who is the author? Are they an expert in their field?
• What do they say? Is their argument clear? Can you summarize it?
• When did they say this? Is the source current?
• Where is the information published? Is it an academic article? Is it peer-reviewed ?
• Why did the author publish it? What is their motivation?
• How do they make their argument? Is it backed up by evidence? Does it rely on opinion, speculation, or appeals to emotion ? Do they address alternative arguments?

Critical thinking also involves being aware of your own biases, not only those of others. When you make an argument or draw your own conclusions, you can ask similar questions about your own writing:

• Am I only considering evidence that supports my preconceptions?
• Is my argument expressed clearly and backed up with credible sources?
• Would I be convinced by this argument coming from someone else?

If you want to know more about ChatGPT, AI tools , citation , and plagiarism , make sure to check out some of our other articles with explanations and examples.

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Critical thinking refers to the ability to evaluate information and to be aware of biases or assumptions, including your own.

Like information literacy , it involves evaluating arguments, identifying and solving problems in an objective and systematic way, and clearly communicating your ideas.

Critical thinking skills include the ability to:

You can assess information and arguments critically by asking certain questions about the source. You can use the CRAAP test , focusing on the currency , relevance , authority , accuracy , and purpose of a source of information.

Ask questions such as:

• Who is the author? Are they an expert?
• How do they make their argument? Is it backed up by evidence?

A credible source should pass the CRAAP test  and follow these guidelines:

• The information should be up to date and current.
• The author and publication should be a trusted authority on the subject you are researching.
• The sources the author cited should be easy to find, clear, and unbiased.
• For a web source, the URL and layout should signify that it is trustworthy.

Information literacy refers to a broad range of skills, including the ability to find, evaluate, and use sources of information effectively.

Being information literate means that you:

• Know how to find credible sources
• Use relevant sources to inform your research
• Understand what constitutes plagiarism
• Know how to cite your sources correctly

Confirmation bias is the tendency to search, interpret, and recall information in a way that aligns with our pre-existing values, opinions, or beliefs. It refers to the ability to recollect information best when it amplifies what we already believe. Relatedly, we tend to forget information that contradicts our opinions.

Although selective recall is a component of confirmation bias, it should not be confused with recall bias.

On the other hand, recall bias refers to the differences in the ability between study participants to recall past events when self-reporting is used. This difference in accuracy or completeness of recollection is not related to beliefs or opinions. Rather, recall bias relates to other factors, such as the length of the recall period, age, and the characteristics of the disease under investigation.

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Open Access

Peer-reviewed

Research Article

What influences students’ abilities to critically evaluate scientific investigations?

Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Project administration, Software, Validation, Visualization, Writing – original draft, Writing – review & editing

* E-mail: [email protected]

Affiliation Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY, United States of America

Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Software, Visualization, Writing – review & editing

Affiliation Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca, NY, United States of America

Roles Conceptualization, Investigation, Methodology, Writing – review & editing

Roles Conceptualization, Funding acquisition, Methodology, Project administration, Supervision, Writing – review & editing

Roles Conceptualization, Funding acquisition, Methodology, Resources, Supervision, Writing – review & editing

• Ashley B. Heim, 
• Cole Walsh, 
• David Esparza, 
• Michelle K. Smith, 
• N. G. Holmes

• Published: August 30, 2022
• https://doi.org/10.1371/journal.pone.0273337
• Reader Comments

Critical thinking is the process by which people make decisions about what to trust and what to do. Many undergraduate courses, such as those in biology and physics, include critical thinking as an important learning goal. Assessing critical thinking, however, is non-trivial, with mixed recommendations for how to assess critical thinking as part of instruction. Here we evaluate the efficacy of assessment questions to probe students’ critical thinking skills in the context of biology and physics. We use two research-based standardized critical thinking instruments known as the Biology Lab Inventory of Critical Thinking in Ecology (Eco-BLIC) and Physics Lab Inventory of Critical Thinking (PLIC). These instruments provide experimental scenarios and pose questions asking students to evaluate what to trust and what to do regarding the quality of experimental designs and data. Using more than 3000 student responses from over 20 institutions, we sought to understand what features of the assessment questions elicit student critical thinking. Specifically, we investigated (a) how students critically evaluate aspects of research studies in biology and physics when they are individually evaluating one study at a time versus comparing and contrasting two and (b) whether individual evaluation questions are needed to encourage students to engage in critical thinking when comparing and contrasting. We found that students are more critical when making comparisons between two studies than when evaluating each study individually. Also, compare-and-contrast questions are sufficient for eliciting critical thinking, with students providing similar answers regardless of if the individual evaluation questions are included. This research offers new insight on the types of assessment questions that elicit critical thinking at the introductory undergraduate level; specifically, we recommend instructors incorporate more compare-and-contrast questions related to experimental design in their courses and assessments.

Citation: Heim AB, Walsh C, Esparza D, Smith MK, Holmes NG (2022) What influences students’ abilities to critically evaluate scientific investigations? PLoS ONE 17(8): e0273337. https://doi.org/10.1371/journal.pone.0273337

Editor: Dragan Pamucar, University of Belgrade Faculty of Organisational Sciences: Univerzitet u Beogradu Fakultet organizacionih nauka, SERBIA

Received: December 3, 2021; Accepted: August 6, 2022; Published: August 30, 2022

Copyright: © 2022 Heim et al. This is an open access article distributed under the terms of the Creative Commons Attribution License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Data Availability: All raw data files are available from the Cornell Institute for Social and Economic Research (CISER) data and reproduction archive ( https://archive.ciser.cornell.edu/studies/2881 ).

Funding: This work was supported by the National Science Foundation under grants DUE-1909602 (MS & NH) and DUE-1611482 (NH). NSF: nsf.gov The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.

Competing interests: The authors have declared that no competing interests exist.

Introduction

Critical thinking and its importance.

Critical thinking, defined here as “the ways in which one uses data and evidence to make decisions about what to trust and what to do” [ 1 ], is a foundational learning goal for almost any undergraduate course and can be integrated in many points in the undergraduate curriculum. Beyond the classroom, critical thinking skills are important so that students are able to effectively evaluate data presented to them in a society where information is so readily accessible [ 2 , 3 ]. Furthermore, critical thinking is consistently ranked as one of the most necessary outcomes of post-secondary education for career advancement by employers [ 4 ]. In the workplace, those with critical thinking skills are more competitive because employers assume they can make evidence-based decisions based on multiple perspectives, keep an open mind, and acknowledge personal limitations [ 5 , 6 ]. Despite the importance of critical thinking skills, there are mixed recommendations on how to elicit and assess critical thinking during and as a result of instruction. In response, here we evaluate the degree to which different critical thinking questions elicit students’ critical thinking skills.

Assessing critical thinking in STEM

Across STEM (i.e., science, technology, engineering, and mathematics) disciplines, several standardized assessments probe critical thinking skills. These assessments focus on aspects of critical thinking and ask students to evaluate experimental methods [ 7 – 11 ], form hypotheses and make predictions [ 12 , 13 ], evaluate data [ 2 , 12 – 14 ], or draw conclusions based on a scenario or figure [ 2 , 12 – 14 ]. Many of these assessments are open-response, so they can be difficult to score, and several are not freely available.

In addition, there is an ongoing debate regarding whether critical thinking is a domain-general or context-specific skill. That is, can someone transfer their critical thinking skills from one domain or context to another (domain-general) or do their critical thinking skills only apply in their domain or context of expertise (context-specific)? Research on the effectiveness of teaching critical thinking has found mixed results, primarily due to a lack of consensus definition of and assessment tools for critical thinking [ 15 , 16 ]. Some argue that critical thinking is domain-general—or what Ennis refers to as the “general approach”—because it is an overlapping skill that people use in various aspects of their lives [ 17 ]. In contrast, others argue that critical thinking must be elicited in a context-specific domain, as prior knowledge is needed to make informed decisions in one’s discipline [ 18 , 19 ]. Current assessments include domain-general components [ 2 , 7 , 8 , 14 , 20 , 21 ], asking students to evaluate, for instance, experiments on the effectiveness of dietary supplements in athletes [ 20 ] and context-specific components, such as to measure students’ abilities to think critically in domains such as neuroscience [ 9 ] and biology [ 10 ].

Others maintain the view that critical thinking is a context-specific skill for the purpose of undergraduate education, but argue that it should be content accessible [ 22 – 24 ], as “thought processes are intertwined with what is being thought about” [ 23 ]. From this viewpoint, the context of the assessment would need to be embedded in a relatively accessible context to assess critical thinking independent of students’ content knowledge. Thus, to effectively elicit critical thinking among students, instructors should use assessments that present students with accessible domain-specific information needed to think deeply about the questions being asked [ 24 , 25 ].

Within the context of STEM, current critical thinking assessments primarily ask students to evaluate a single experimental scenario (e.g., [ 10 , 20 ]), though compare-and-contrast questions about more than one scenario can be a powerful way to elicit critical thinking [ 26 , 27 ]. Generally included in the “Analysis” level of Bloom’s taxonomy [ 28 – 30 ], compare-and-contrast questions encourage students to recognize, distinguish between, and relate features between scenarios and discern relevant patterns or trends, rather than compile lists of important features [ 26 ]. For example, a compare-and-contrast assessment may ask students to compare the hypotheses and research methods used in two different experimental scenarios, instead of having them evaluate the research methods of a single experiment. Alternatively, students may inherently recall and use experimental scenarios based on their prior experiences and knowledge as they evaluate an individual scenario. In addition, evaluating a single experimental scenario individually may act as metacognitive scaffolding [ 31 , 32 ]—a process which “guides students by asking questions about the task or suggesting relevant domain-independent strategies [ 32 ]—to support students in their compare-and-contrast thinking.

Purpose and research questions

Our primary objective of this study was to better understand what features of assessment questions elicit student critical thinking using two existing instruments in STEM: the Biology Lab Inventory of Critical Thinking in Ecology (Eco-BLIC) and Physics Lab Inventory of Critical Thinking (PLIC). We focused on biology and physics since critical thinking assessments were already available for these disciplines. Specifically, we investigated (a) how students critically evaluate aspects of research studies in biology and physics when they are individually evaluating one study at a time or comparing and contrasting two studies and (b) whether individual evaluation questions are needed to encourage students to engage in critical thinking when comparing and contrasting.

Providing undergraduates with ample opportunities to practice critical thinking skills in the classroom is necessary for evidence-based critical thinking in their future careers and everyday life. While most critical thinking instruments in biology and physics contexts have undergone some form of validation to ensure they are accurately measuring the intended construct, to our knowledge none have explored how different question types influence students’ critical thinking. This research offers new insight on the types of questions that elicit critical thinking, which can further be applied by educators and researchers across disciplines to measure cognitive student outcomes and incorporate more effective critical thinking opportunities in the classroom.

Ethics statement

The procedures for this study were approved by the Institutional Review Board of Cornell University (Eco-BLIC: #1904008779; PLIC: #1608006532). Informed consent was obtained by all participating students via online consent forms at the beginning of the study, and students did not receive compensation for participating in this study unless their instructor offered credit for completing the assessment.

Participants and assessment distribution

We administered the Eco-BLIC to undergraduate students across 26 courses at 11 institutions (six doctoral-granting, three Master’s-granting, and two Baccalaureate-granting) in Fall 2020 and Spring 2021 and received 1612 usable responses. Additionally, we administered the PLIC to undergraduate students across 21 courses at 11 institutions (six doctoral-granting, one Master’s-granting, three four-year colleges, and one 2-year college) in Fall 2020 and Spring 2021 and received 1839 usable responses. We recruited participants via convenience sampling by emailing instructors of primarily introductory ecology-focused courses or introductory physics courses who expressed potential interest in implementing our instrument in their course(s). Both instruments were administered online via Qualtrics and students were allowed to complete the assessments outside of class. The demographic distribution of the response data is presented in Table 1 , all of which were self-reported by students. The values presented in this table represent all responses we received.

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https://doi.org/10.1371/journal.pone.0273337.t001

Instrument description

Question types..

Though the content and concepts featured in the Eco-BLIC and PLIC are distinct, both instruments share a similar structure and set of question types. The Eco-BLIC—which was developed using a structure similar to that of the PLIC [ 1 ]—includes two predator-prey scenarios based on relationships between (a) smallmouth bass and mayflies and (b) great-horned owls and house mice. Within each scenario, students are presented with a field-based study and a laboratory-based study focused on a common research question about feeding behaviors of smallmouth bass or house mice, respectively. The prompts for these two Eco-BLIC scenarios are available in S1 and S2 Appendices. The PLIC focuses on two research groups conducting different experiments to test the relationship between oscillation periods of masses hanging on springs [ 1 ]; the prompts for this scenario can be found in S3 Appendix . The descriptive prompts in both the Eco-BLIC and PLIC also include a figure presenting data collected by each research group, from which students are expected to draw conclusions. The research scenarios (e.g., field-based group and lab-based group on the Eco-BLIC) are written so that each group has both strengths and weaknesses in their experimental designs.

After reading the prompt for the first experimental group (Group 1) in each instrument, students are asked to identify possible claims from Group 1’s data (data evaluation questions). Students next evaluate the strengths and weaknesses of various study features for Group 1 (individual evaluation questions). Examples of these individual evaluation questions are in Table 2 . They then suggest next steps the group should pursue (next steps items). Students are then asked to read about the prompt describing the second experimental group’s study (Group 2) and again answer questions about the possible claims, strengths and weaknesses, and next steps of Group 2’s study (data evaluation questions, individual evaluation questions, and next steps items). Once students have independently evaluated Groups 1 and 2, they answer a series of questions to compare the study approaches of Group 1 versus Group 2 (group comparison items). In this study, we focus our analysis on the individual evaluation questions and group comparison items.

https://doi.org/10.1371/journal.pone.0273337.t002

Instrument versions.

To determine whether the individual evaluation questions impacted the assessment of students’ critical thinking, students were randomly assigned to take one of two versions of the assessment via Qualtrics branch logic: 1) a version that included the individual evaluation and group comparison items or 2) a version with only the group comparison items, with the individual evaluation questions removed. We calculated the median time it took students to answer each of these versions for both the Eco-BLIC and PLIC.

Think-aloud interviews.

We also conducted one-on-one think-aloud interviews with students to elicit feedback on the assessment questions (Eco-BLIC n = 21; PLIC n = 4). Students were recruited via convenience sampling at our home institution and were primarily majoring in biology or physics. All interviews were audio-recorded and screen captured via Zoom and lasted approximately 30–60 minutes. We asked participants to discuss their reasoning for answering each question as they progressed through the instrument. We did not analyze these interviews in detail, but rather used them to extract relevant examples of critical thinking that helped to explain our quantitative findings. Multiple think-aloud interviews were conducted with students using previous versions of the PLIC [ 1 ], though these data are not discussed here.

Data analyses.

Our analyses focused on (1) investigating the alignment between students’ responses to the individual evaluation questions and the group comparison items and (2) comparing student responses between the two instrument versions. If individual evaluation and group comparison items elicit critical thinking in the same way, we would expect to see the same frequency of responses for each question type, as per Fig 1 . For example, if students evaluated one study feature of Group 1 as a strength and the same study feature for Group 2 as a strength, we would expect that students would respond that both groups were highly effective for this study feature on the group comparison item (i.e., data represented by the purple circle in the top right quadrant of Fig 1 ). Alternatively, if students evaluated one study feature of Group 1 as a strength and the same study feature for Group 2 as a weakness, we would expect that students would indicate that Group 1 was more effective than Group 2 on the group comparison item (i.e., data represented by the green circle in the lower right quadrant of Fig 1 ).

The x- and y-axes represent rankings on the individual evaluation questions for Groups 1 and 2 (or field and lab groups), respectively. The colors in the legend at the top of the figure denote responses to the group comparison items. In this idealized example, all pie charts are the same size to indicate that the student answers are equally proportioned across all answer combinations.

https://doi.org/10.1371/journal.pone.0273337.g001

We ran descriptive statistics to summarize student responses to questions and examine distributions and frequencies of the data on the Eco-BLIC and PLIC. We also conducted chi-square goodness-of-fit tests to analyze differences in student responses between versions within the relevant questions from the same instrument. In all of these tests, we used a Bonferroni correction to lower the chances of receiving a false positive and account for multiple comparisons. We generated figures—primarily multi-pie chart graphs and heat maps—to visualize differences between individual evaluation and group comparison items and between versions of each instrument with and without individual evaluation questions, respectively. All aforementioned data analyses and figures were conducted or generated in the R statistical computing environment (v. 4.1.1) and Microsoft Excel.

We asked students to evaluate different experimental set-ups on the Eco-BLIC and PLIC two ways. Students first evaluated the strengths and weaknesses of study features for each scenario individually (individual evaluation questions, Table 2 ) and, subsequently, answered a series of questions to compare and contrast the study approaches of both research groups side-by-side (group comparison items, Table 2 ). Through analyzing the individual evaluation questions, we found that students generally ranked experimental features (i.e., those related to study set-up, data collection and summary methods, and analysis and outcomes) of the independent research groups as strengths ( Fig 2 ), evidenced by the mean scores greater than 2 on a scale from 1 (weakness) to 4 (strength).

Each box represents the interquartile range (IQR). Lines within each box represent the median. Circles represent outliers of mean scores for each question.

https://doi.org/10.1371/journal.pone.0273337.g002

Individual evaluation versus compare-and-contrast evaluation

Our results indicate that when students consider Group 1 or Group 2 individually, they mark most study features as strengths (consistent with the means in Fig 2 ), shown by the large circles in the upper right quadrant across the three experimental scenarios ( Fig 3 ). However, the proportion of colors on each pie chart shows that students select a range of responses when comparing the two groups [e.g., Group 1 being more effective (green), Group 2 being more effective (blue), both groups being effective (purple), and neither group being effective (orange)]. We infer that students were more discerning (i.e., more selective) when they were asked to compare the two groups across the various study features ( Fig 3 ). In short, students think about the groups differently if they are rating either Group 1 or Group 2 in the individual evaluation questions versus directly comparing Group 1 to Group 2.

The x- and y-axes represent students’ rankings on the individual evaluation questions for Groups 1 and 2 on each assessment, respectively, where 1 indicates weakness and 4 indicates strength. The overall size of each pie chart represents the proportion of students who responded with each pair of ratings. The colors in the pie charts denote the proportion of students’ responses who chose each option on the group comparison items. (A) Eco-BLIC bass-mayfly scenario (B) Eco-BLIC owl-mouse scenario (C) PLIC oscillation periods of masses hanging on springs scenario.

https://doi.org/10.1371/journal.pone.0273337.g003

These results are further supported by student responses from the think-aloud interviews. For example, one interview participant responding to the bass-mayfly scenario of the Eco-BLIC explained that accounting for bias/error in both the field and lab groups in this scenario was a strength (i.e., 4). This participant mentioned that Group 1, who performed the experiment in the field, “[had] outliers, so they must have done pretty well,” and that Group 2, who collected organisms in the field but studied them in lab, “did a good job of accounting for bias.” However, when asked to compare between the groups, this student argued that Group 2 was more effective at accounting for bias/error, noting that “they controlled for more variables.”

Another individual who was evaluating “repeated trials for each mass” in the PLIC expressed a similar pattern. In response to ranking this feature of Group 1 as a strength, they explained: “Given their uncertainties and how small they are, [the group] seems like they’ve covered their bases pretty well.” Similarly, they evaluated this feature of Group 2 as a strength as well, simply noting: “Same as the last [group], I think it’s a strength.” However, when asked to compare between Groups 1 and 2, this individual argued that Group 1 was more effective because they conducted more trials.

Individual evaluation questions to support compare and contrast thinking

Given that students were more discerning when they directly compared two groups for both biology and physics experimental scenarios, we next sought to determine if the individual evaluation questions for Group 1 or Group 2 were necessary to elicit or helpful to support student critical thinking about the investigations. To test this, students were randomly assigned to one of two versions of the instrument. Students in one version saw individual evaluation questions about Group 1 and Group 2 and then saw group comparison items for Group 1 versus Group 2. Students in the second version only saw the group comparison items. We found that students assigned to both versions responded similarly to the group comparison questions, indicating that the individual evaluation questions did not promote additional critical thinking. We visually represent these similarities across versions with and without the individual evaluation questions in Fig 4 as heat maps.

The x-axis denotes students’ responses on the group comparison items (i.e., whether they ranked Group 1 as more effective, Group 2 as more effective, both groups as highly effective, or neither group as effective/both groups were minimally effective). The y-axis lists each of the study features that students compared between the field and lab groups. White and lighter shades of red indicate a lower percentage of student responses, while brighter red indicates a higher percentage of student responses. (A) Eco-BLIC bass-mayfly scenario. (B) Eco-BLIC owl-mouse scenario. (C) PLIC oscillation periods of masses hanging on springs scenario.

https://doi.org/10.1371/journal.pone.0273337.g004

We ran chi-square goodness-of-fit tests on the answers between student responses on both instrument versions and there were no significant differences on the Eco-BLIC bass-mayfly scenario ( Fig 4A ; based on an adjusted p -value of 0.006) or owl-mouse questions ( Fig 4B ; based on an adjusted p-value of 0.004). There were only three significant differences (out of 53 items) in how students responded to questions on both versions of the PLIC ( Fig 4C ; based on an adjusted p -value of 0.0005). The items that students responded to differently ( p <0.0005) across both versions were items where the two groups were identical in their design; namely, the equipment used (i.e., stopwatches), the variables measured (i.e., time and mass), and the number of bounces of the spring per trial (i.e., five bounces). We calculated Cramer’s C (Vc; [ 33 ]), a measure commonly applied to Chi-square goodness of fit models to understand the magnitude of significant results. We found that the effect sizes for these three items were small (Vc = 0.11, Vc = 0.10, Vc = 0.06, respectively).

The trend that students answer the Group 1 versus Group 2 comparison questions similarly, regardless of whether they responded to the individual evaluation questions, is further supported by student responses from the think-aloud interviews. For example, one participant who did not see the individual evaluation questions for the owl-mouse scenario of the Eco-BLIC independently explained that sampling mice from other fields was a strength for both the lab and field groups. They explained that for the lab group, “I think that [the mice] coming from multiple nearby fields is good…I was curious if [mouse] behavior was universal.” For the field group, they reasoned, “I also noticed it was just from a single nearby field…I thought that was good for control.” However, this individual ultimately reasoned that the field group was “more effective for sampling methods…it’s better to have them from a single field because you know they were exposed to similar environments.” Thus, even without individual evaluation questions available, students can still make individual evaluations when comparing and contrasting between groups.

We also determined that removing the individual evaluation questions decreased the duration of time students needed to complete the Eco-BLIC and PLIC. On the Eco-BLIC, the median time to completion for the version with individual evaluation and group comparison questions was approximately 30 minutes, while the version with only the group comparisons had a median time to completion of 18 minutes. On the PLIC, the median time to completion for the version with individual evaluation questions and group comparison questions was approximately 17 minutes, while the version with only the group comparisons had a median time to completion of 15 minutes.

To determine how to elicit critical thinking in a streamlined manner using introductory biology and physics material, we investigated (a) how students critically evaluate aspects of experimental investigations in biology and physics when they are individually evaluating one study at a time versus comparing and contrasting two and (b) whether individual evaluation questions are needed to encourage students to engage in critical thinking when comparing and contrasting.

Students are more discerning when making comparisons

We found that students were more discerning when comparing between the two groups in the Eco-BLIC and PLIC rather than when evaluating each group individually. While students tended to independently evaluate study features of each group as strengths ( Fig 2 ), there was greater variation in their responses to which group was more effective when directly comparing between the two groups ( Fig 3 ). Literature evaluating the role of contrasting cases provides plausible explanations for our results. In that work, contrasting between two cases supports students in identifying deep features of the cases, compared with evaluating one case after the other [ 34 – 37 ]. When presented with a single example, students may deem certain study features as unimportant or irrelevant, but comparing study features side-by-side allows students to recognize the distinct features of each case [ 38 ]. We infer, therefore, that students were better able to recognize the strengths and weaknesses of the two groups in each of the assessment scenarios when evaluating the groups side by side, rather than in isolation [ 39 , 40 ]. This result is somewhat surprising, however, as students could have used their knowledge of experimental designs as a contrasting case when evaluating each group. Future work, therefore, should evaluate whether experts use their vast knowledge base of experimental studies as discerning contrasts when evaluating each group individually. This work would help determine whether our results here suggest that students do not have a sufficient experiment-base to use as contrasts or if the students just do not use their experiment-base when evaluating the individual groups. Regardless, our study suggests that critical thinking assessments should ask students to compare and contrast experimental scenarios, rather than just evaluate individual cases.

Individual evaluation questions do not influence answers to compare and contrast questions

We found that individual evaluation questions were unnecessary for eliciting or supporting students’ critical thinking on the two assessments. Students responded to the group comparison items similarly whether or not they had received the individual evaluation questions. The exception to this pattern was that students responded differently to three group comparison items on the PLIC when individual evaluation questions were provided. These three questions constituted a small portion of the PLIC and showed a small effect size. Furthermore, removing the individual evaluation questions decreased the median time for students to complete the Eco-BLIC and PLIC. It is plausible that spending more time thinking about the experimental methods while responding to the individual evaluation questions would then prepare students to be better discerners on the group comparison questions. However, the overall trend is that individual evaluation questions do not have a strong impact on how students evaluate experimental scenarios, nor do they set students up to be better critical thinkers later. This finding aligns with prior research suggesting that students tend to disregard details when they evaluate a single case, rather than comparing and contrasting multiple cases [ 38 ], further supporting our findings about the effectiveness of the group comparison questions.

Practical implications

Individual evaluation questions were not effective for students to engage in critical thinking nor to prepare them for subsequent questions that elicit their critical thinking. Thus, researchers and instructors could make critical thinking assessments more effective and less time-consuming by encouraging comparisons between cases. Additionally, the study raises a question about whether instruction should incorporate more experimental case studies throughout their courses and assessments so that students have a richer experiment-base to use as contrasts when evaluating individual experimental scenarios. To help students discern information about experimental design, we suggest that instructors consider providing them with multiple experimental studies (i.e., cases) and asking them to compare and contrast between these studies.

Future directions and limitations

When designing critical thinking assessments, questions should ask students to make meaningful comparisons that require them to consider the important features of the scenarios. One challenge of relying on compare-and-contrast questions in the Eco-BLIC and PLIC to elicit students’ critical thinking is ensuring that students are comparing similar yet distinct study features across experimental scenarios, and that these comparisons are meaningful [ 38 ]. For example, though sample size is different between experimental scenarios in our instruments, it is a significant feature that has implications for other aspects of the research like statistical analyses and behaviors of the animals. Therefore, one limitation of our study could be that we exclusively focused on experimental method evaluation questions (i.e., what to trust), and we are unsure if the same principles hold for other dimensions of critical thinking (i.e., what to do). Future research should explore whether questions that are not in a compare-and-contrast format also effectively elicit critical thinking, and if so, to what degree.

As our question schema in the Eco-BLIC and PLIC were designed for introductory biology and physics content, it is unknown how effective this question schema would be for upper-division biology and physics undergraduates who we would expect to have more content knowledge and prior experiences for making comparisons in their respective disciplines [ 18 , 41 ]. For example, are compare-and-contrast questions still needed to elicit critical thinking among upper-division students, or would critical thinking in this population be more effectively assessed by incorporating more sophisticated data analyses in the research scenarios? Also, if students with more expert-like thinking have a richer set of experimental scenarios to inherently use as contrasts when comparing, we might expect their responses on the individual evaluation questions and group comparisons to better align. To further examine how accessible and context-specific the Eco-BLIC and PLIC are, novel scenarios could be developed that incorporate topics and concepts more commonly addressed in upper-division courses. Additionally, if instructors offer students more experience comparing and contrasting experimental scenarios in the classroom, would students be more discerning on the individual evaluation questions?

While a single consensus definition of critical thinking does not currently exist [ 15 ], continuing to explore critical thinking in other STEM disciplines beyond biology and physics may offer more insight into the context-specific nature of critical thinking [ 22 , 23 ]. Future studies should investigate critical thinking patterns in other STEM disciplines (e.g., mathematics, engineering, chemistry) through designing assessments that encourage students to evaluate aspects of at least two experimental studies. As undergraduates are often enrolled in multiple courses simultaneously and thus have domain-specific knowledge in STEM, would we observe similar patterns in critical thinking across additional STEM disciplines?

Lastly, we want to emphasize that we cannot infer every aspect of critical thinking from students’ responses on the Eco-BLIC and PLIC. However, we suggest that student responses on the think-aloud interviews provide additional qualitative insight into how and why students were making comparisons in each scenario and their overall critical thinking processes.

Conclusions

Overall, we found that comparing and contrasting two different experiments is an effective and efficient way to elicit context-specific critical thinking in introductory biology and physics undergraduates using the Eco-BLIC and the PLIC. Students are more discerning (i.e., critical) and engage more deeply with the scenarios when making comparisons between two groups. Further, students do not evaluate features of experimental studies differently when individual evaluation questions are provided or removed. These novel findings hold true across both introductory biology and physics, based on student responses on the Eco-BLIC and PLIC, respectively—though there is much more to explore regarding critical thinking processes of students across other STEM disciplines and in more advanced stages of their education. Undergraduate students in STEM need to be able to critically think for career advancement, and the Eco-BLIC and PLIC are two means of measuring students’ critical thinking in biology and physics experimental contexts via comparing and contrasting. This research offers new insight on the types of questions that elicit critical thinking, which can further be applied by educators and researchers across disciplines to teach and measure cognitive student outcomes. Specifically, we recommend instructors incorporate more compare-and-contrast questions related to experimental design in their courses to efficiently elicit undergraduates’ critical thinking.

Supporting information

S1 appendix. eco-blic bass-mayfly scenario prompt..

https://doi.org/10.1371/journal.pone.0273337.s001

S2 Appendix. Eco-BLIC owl-mouse scenario prompt.

https://doi.org/10.1371/journal.pone.0273337.s002

S3 Appendix. PLIC scenario prompt.

https://doi.org/10.1371/journal.pone.0273337.s003

Acknowledgments

We thank the members of the Cornell Discipline-based Education Research group for their feedback on this article, as well as our advisory board (Jenny Knight, Meghan Duffy, Luanna Prevost, and James Hewlett) and the AAALab for their ideas and suggestions. We also greatly appreciate the instructors who shared the Eco-BLIC and PLIC in their classes and the students who participated in this study.

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Thinking critically on critical thinking: why scientists’ skills need to spread

Lecturer in Psychology, University of Tasmania

Disclosure statement

Rachel Grieve does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

University of Tasmania provides funding as a member of The Conversation AU.

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MATHS AND SCIENCE EDUCATION: We’ve asked our authors about the state of maths and science education in Australia and its future direction. Today, Rachel Grieve discusses why we need to spread science-specific skills into the wider curriculum.

When we think of science and maths, stereotypical visions of lab coats, test-tubes, and formulae often spring to mind.

But more important than these stereotypes are the methods that underpin the work scientists do – namely generating and systematically testing hypotheses. A key part of this is critical thinking.

It’s a skill that often feels in short supply these days, but you don’t necessarily need to study science or maths in order gain it. It’s time to take critical thinking out of the realm of maths and science and broaden it into students’ general education.

What is critical thinking?

Critical thinking is a reflective and analytical style of thinking, with its basis in logic, rationality, and synthesis. It means delving deeper and asking questions like: why is that so? Where is the evidence? How good is that evidence? Is this a good argument? Is it biased? Is it verifiable? What are the alternative explanations?

Critical thinking moves us beyond mere description and into the realms of scientific inference and reasoning. This is what enables discoveries to be made and innovations to be fostered.

For many scientists, critical thinking becomes (seemingly) intuitive, but like any skill set, critical thinking needs to be taught and cultivated. Unfortunately, educators are unable to deposit this information directly into their students’ heads. While the theory of critical thinking can be taught, critical thinking itself needs to be experienced first-hand.

So what does this mean for educators trying to incorporate critical thinking within their curricula? We can teach students the theoretical elements of critical thinking. Take for example working through [statistical problems](http://wdeneys.org/data/COGNIT_1695.pdf](http://wdeneys.org/data/COGNIT_1695.pdf) like this one:

In a 1,000-person study, four people said their favourite series was Star Trek and 996 said Days of Our Lives. Jeremy is a randomly chosen participant in this study, is 26, and is doing graduate studies in physics. He stays at home most of the time and likes to play videogames. What is most likely? a. Jeremy’s favourite series is Star Trek b. Jeremy’s favourite series is Days of Our Lives

Some critical thought applied to this problem allows us to know that Jeremy is most likely to prefer Days of Our Lives.

Can you teach it?

It’s well established that statistical training is associated with improved decision-making. But the idea of “teaching” critical thinking is itself an oxymoron: critical thinking can really only be learned through practice. Thus, it is not surprising that student engagement with the critical thinking process itself is what pays the dividends for students.

As such, educators try to connect students with the subject matter outside the lecture theatre or classroom. For example, problem based learning is now widely used in the health sciences, whereby students must figure out the key issues related to a case and direct their own learning to solve that problem. Problem based learning has clear parallels with real life practice for health professionals.

Critical thinking goes beyond what might be on the final exam and life-long learning becomes the key. This is a good thing, as practice helps to improve our ability to think critically over time .

Just for scientists?

For those engaging with science, learning the skills needed to be a critical consumer of information is invaluable. But should these skills remain in the domain of scientists? Clearly not: for those engaging with life, being a critical consumer of information is also invaluable, allowing informed judgement.

Being able to actively consider and evaluate information, identify biases, examine the logic of arguments, and tolerate ambiguity until the evidence is in would allow many people from all backgrounds to make better decisions. While these decisions can be trivial (does that miracle anti-wrinkle cream really do what it claims?), in many cases, reasoning and decision-making can have a substantial impact, with some decisions have life-altering effects. A timely case-in-point is immunisation.

Pushing critical thinking from the realms of science and maths into the broader curriculum may lead to far-reaching outcomes. With increasing access to information on the internet, giving individuals the skills to critically think about that information may have widespread benefit, both personally and socially.

The value of science education might not always be in the facts, but in the thinking.

This is the sixth part of our series Maths and Science Education .

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Evaluation skills are a vital part of any student's education and are essential for success in the modern world. From determining the quality of evidence to assessing the validity of an argument, evaluation skills are essential for critical thinking and problem-solving. In this comprehensive overview, we'll explore the importance of evaluation skills and how they can be developed and applied in all areas of life. From formulating hypotheses to understanding the different types of evidence and the criteria used to assess them, this article will provide an in-depth look at the evaluation process. We'll discuss why evaluation skills are so important, explore how they can be developed, and provide examples of how they can be used in everyday life.

For those looking for more guidance, Spires online BMAT tutors can provide expert advice on developing and applying evaluation skills. By the end of this article, readers will have a better understanding of the importance of evaluation skills, as well as a clear picture of how to develop and apply them in everyday life. Evaluation skills consist of a set of abilities that enable us to analyze information accurately and come to sound conclusions. These skills include critical thinking , problem-solving, data interpretation, and logical reasoning. They are important for science learning and critical thinking because they allow us to evaluate the validity of scientific theories and hypotheses. Developing evaluation skills requires practice and dedication.

It involves developing the ability to ask the right questions, observe carefully, think objectively, and draw accurate conclusions. To develop these skills, it is important to practice analyzing information from different sources and coming to sound conclusions. It is also important to practice questioning assumptions and challenging accepted beliefs. Additionally, it is helpful to read books and articles on science and critical thinking to better understand how to evaluate information accurately. Another important part of developing evaluation skills is understanding the importance of data accuracy and precision.

Data accuracy refers to how closely a measurement or estimate reflects the true value of a phenomenon, while data precision refers to how precise the measurement is. Understanding these concepts helps us evaluate data more accurately. Finally, developing evaluation skills requires honing our communication skills. Being able to effectively communicate our thoughts and opinions helps us share our ideas with others and develop our understanding of the material. Communicating clearly also helps us evaluate information more accurately by making sure that everyone is on the same page when discussing complex topics. In conclusion, evaluation skills are essential for effective learning in any subject.

How Can We Develop Evaluation Skills?

The importance of communication.

Communication allows us to share our ideas with others, which can then be discussed, debated, and further developed. Communication also allows us to develop a deeper understanding of the material by being able to ask questions and get feedback from peers or experts. In order to develop our communication skills, we need to learn how to express ourselves clearly and concisely. We must also learn how to actively listen to others and truly understand their perspectives. This will allow us to better engage in dialogue and form meaningful connections with our peers.

Why Are Evaluation Skills Important?

Understanding data accuracy & precision.

For example, if a measurement is off by 10% from the true value, then it has an accuracy of 90%. On the other hand, data precision is determined by the number of significant figures in a measurement. The more significant figures a measurement has, the more precise it is. In order to evaluate data accurately, it is important to understand how these two concepts interact. For example, if a measurement has high accuracy but low precision, then it may still be inaccurate because of the amount of error in the measurement.

Similarly, a measurement with high precision but low accuracy can still be inaccurate if the true value is significantly different from the measurement. By understanding the importance of both accuracy and precision in data evaluation, we can make more informed decisions about the validity of our conclusions. This is especially important when making decisions based on scientific evidence, as inaccurate or imprecise data can lead to incorrect conclusions and inaccurate results. In conclusion, evaluation skills are an essential part of science learning and critical thinking. Developing these skills requires practice and dedication, as well as an understanding of data accuracy and precision. Finally, effective communication is a key component of mastering these skills, as it allows us to share our ideas with others.

Shahid Lakha

Shahid Lakha is a seasoned educational consultant with a rich history in the independent education sector and EdTech. With a solid background in Physics, Shahid has cultivated a career that spans tutoring, consulting, and entrepreneurship. As an Educational Consultant at Spires Online Tutoring since October 2016, he has been instrumental in fostering educational excellence in the online tutoring space. Shahid is also the founder and director of Specialist Science Tutors, a tutoring agency based in West London, where he has successfully managed various facets of the business, including marketing, web design, and client relationships. His dedication to education is further evidenced by his role as a self-employed tutor, where he has been teaching Maths, Physics, and Engineering to students up to university level since September 2011. Shahid holds a Master of Science in Photon Science from the University of Manchester and a Bachelor of Science in Physics from the University of Bath.

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What is Critical Thinking in Academics – Guide With Examples

Published by Grace Graffin at October 17th, 2023 , Revised On October 17, 2023

In an era dominated by vast amounts of information, the ability to discern, evaluate, and form independent conclusions is more crucial than ever. Enter the realm of “critical thinking.” But what does this term truly mean? 

What is Critical Thinking?

Critical thinking is the disciplined art of analysing and evaluating information or situations by applying a range of intellectual skills. It goes beyond mere memorisation or blind acceptance of information, demanding a deeper understanding and assessment of evidence, context, and implications.

Moreover, paraphrasing in sources is an essential skill in critical thinking, as it allows for representing another’s ideas in one’s own words, ensuring comprehension.

Critical thinking is not just an academic buzzword but an essential tool. In academic settings, it serves as the backbone of genuine understanding and the springboard for innovation. When students embrace critical thinking, they move from being passive recipients of information to active participants in their own learning journey.

They question, evaluate, and synthesise information from various sources, fostering an intellectual curiosity that extends beyond the classroom. Part of this involves understanding how to integrate sources into their work, which means not only including information from various places, but also doing so in a cohesive and logical way.

The importance of critical thinking in academics cannot be overstated. It equips students with the skills to discern credible sources from unreliable ones, develop well-informed arguments, and approach problems with a solution-oriented mindset.

The Origins and Evolution of Critical Thinking

The idea of critical thinking isn’t a new-age concept. Its roots reach back into ancient civilisations, moulding the foundations of philosophy, science, and education. To appreciate its evolution, it’s vital to delve into its historical context and the influential thinkers who have championed it.

Historical Perspective on the Concept of Critical Thinking

The seeds of critical thinking can be traced back to Ancient Greece, particularly in the city-state of Athens. Here, the practice of debate, dialogue, and philosophical inquiry was valued and was seen as a route to knowledge and wisdom. This era prized the art of questioning, investigating, and exploring diverse viewpoints to reach enlightened conclusions.

In medieval Islamic civilisation, scholars in centres of learning, such as the House of Wisdom in Baghdad, played a pivotal role in advancing critical thought. Their works encompassed vast areas, including philosophy, mathematics, and medicine, often intertwining rigorous empirical observations with analytical reasoning.

The Renaissance period further nurtured critical thinking as it was a time of revival in art, culture, and intellect. This era championed humanistic values, focusing on human potential and achievements. It saw the rebirth of scientific inquiry, scepticism about religious dogma, and an emphasis on empirical evidence.

Philosophers and Educators Who Championed Critical Thinking

Several philosophers and educators stand out for their remarkable contributions to the sphere of critical thinking:

Known for the Socratic method, a form of cooperative argumentative dialogue, Socrates would ask probing questions, forcing his pupils to think deeply about their beliefs and assumptions. His methodology still influences modern education, emphasising the answer and the path of reasoning that leads to it.

A student of Socrates, Plato believed in the importance of reason and inquiry. His allegory of the cave highlights the difference between blindly accepting information and seeking true knowledge.

He placed great emphasis on empirical evidence and logic. His works on syllogism and deductive reasoning laid the foundation for systematic critical thought.

Al-Farabi And Ibn Rushd (Averroes)

Islamic philosophers, who harmonised Greek philosophy with Islamic thought, emphasised the importance of rationality and critical inquiry.

Sir Francis Bacon

An advocate for the scientific method, Bacon believed that knowledge should be based on empirical evidence, observation, and experimentation rather than mere reliance on accepted truths.

A modern proponent of critical thinking, Dewey viewed it as an active, persistent, and careful consideration of a belief or supposed form of knowledge. He emphasised that students should be taught to think for themselves rather than just memorise facts.

Paulo Freire

Recognised for his ideas on “problem-posing education,” Freire believed that students should be encouraged to question, reflect upon, and respond to societal issues, fostering critical consciousness.

Characteristics of Critical Thinkers

Critical thinkers are not defined merely by the knowledge they possess, but by the manner in which they process, analyse, and use that knowledge. While the profile of a critical thinker can be multifaceted, certain core traits distinguish them. Let’s delve into these characteristics:

1. Open-mindedness

Open-mindedness refers to the willingness to consider different ideas, opinions, and perspectives, even if they challenge one’s existing beliefs. It allows critical thinkers to avoid being trapped in their own biases or preconceived notions. By being open to diverse viewpoints, they can make more informed and holistic decisions.

• Listening to a debate without immediately taking sides.
• Reading literature from different cultures to understand various world views.

2. Analytical Nature

An analytical nature entails the ability to break down complex problems or information into smaller, manageable parts to understand the whole better. Being analytical enables individuals to see patterns, relationships, and inconsistencies, allowing for deeper comprehension and better problem-solving.

• Evaluating a research paper by examining its methodology, results, and conclusions separately.
• Breaking down the components of a business strategy to assess its viability.

3. Scepticism

Scepticism is the tendency to question and doubt claims or assertions until sufficient evidence is presented. Skepticism ensures that critical thinkers do not accept information at face value. They seek evidence and are cautious about jumping to conclusions without verification.

• Questioning the results of a study that lacks a control group.
• Doubting a sensational news headline and researching further before believing or sharing it.

4. Intellectual Humility

Intellectual humility involves recognising and accepting the limitations of one’s knowledge and understanding. It is about being aware that one does not have all the answers. This trait prevents arrogance and overconfidence. Critical thinkers with intellectual humility are open to learning and receptive to constructive criticism.

• Admitting when one is wrong in a discussion.
• Actively seeking feedback on a project or idea to enhance it.

5. Logical Reasoning

Logical reasoning is the ability to think sequentially and make connections between concepts in a coherent manner. It involves drawing conclusions that logically follow from the available information. Logical reasoning ensures that decisions and conclusions are sound and based on valid premises. It helps avoid fallacies and cognitive biases.

• Using deductive reasoning to derive a specific conclusion from a general statement.
• Evaluating an argument for potential logical fallacies like “slippery slope” or “ad hominem.”

The Difference Between Critical Thinking and Memorisation

In today’s rapidly changing educational landscape, there is an ongoing debate about the importance of rote memorisation versus the significance of cultivating critical thinking skills. Both have their place in learning, but they serve very different purposes.

Nature Of Learning

• Rote Learning: Involves memorising information exactly as it is, without necessarily understanding its context or underlying meaning. It’s akin to storing data as-is, without processing.
• Analytical Processing (Critical Thinking): Involves understanding, questioning, and connecting new information with existing knowledge. It’s less about storage and more about comprehension and application.

Depth of Engagement

• Rote Learning: Often remains at the surface level. Students might remember facts for a test, but might forget them shortly after.
• Analytical Processing: Engages deeper cognitive skills. When students think critically, they’re more likely to retain information because they’ve processed it deeper.

Application in New Situations

• Rote Learning: Information memorised through rote often does not easily apply to new or unfamiliar situations, since it is detached from understanding.
• Analytical Processing: Promotes adaptability. Critical thinkers can transfer knowledge and skills to different contexts because they understand underlying concepts and principles.

Why Critical Thinking Produces Long-Term Academic Benefits

Here are the benefits of critical thinking in academics. 

Enhanced Retention

Critical thinking often involves active learning—discussions, problem-solving, and debates—which promotes better retention than passive memorisation.

Skill Development

Beyond content knowledge, critical thinking develops skills like analysis, synthesis, source evaluation , and problem-solving. These are invaluable in higher education and professional settings.

Adaptability

In an ever-evolving world, the ability to adapt is crucial. Critical thinkers are better equipped to learn and adapt because they don’t just know facts; they understand concepts.

Lifelong Learning

Critical thinkers are naturally curious. They seek to understand, question, and explore, turning them into lifelong learners who continually seek knowledge and personal growth.

Improved Decision-Making

Analytical processing allows students to evaluate various perspectives, weigh evidence, and make well-informed decisions, a skill far beyond academics.

Preparation for Real-World Challenges

The real world does not come with a textbook. Critical thinkers can navigate unexpected challenges, connect disparate pieces of information, and innovate solutions.

Steps in the Critical Thinking Process

Critical thinking is more than just a skill—it is a structured process. By following a systematic approach, critical thinkers can navigate complex issues and ensure their conclusions are well-informed and reasoned. Here’s a breakdown of the steps involved:

Step 1. Identification and Clarification of the Problem or Question

Recognizing that a problem or question exists and understanding its nature. It’s about defining the issue clearly, without ambiguity. A well-defined problem serves as the foundation for the subsequent steps. The entire process may become misguided without a clear understanding of what’s being addressed.

Example: Instead of a vague problem like “improving the environment,” a more specific question could be “How can urban areas reduce air pollution?”

Step 2. Gathering Information and Evidence

Actively seeking relevant data, facts, and evidence. This might involve research, observations, experiments, or discussions. Reliable decisions are based on solid evidence. The quality and relevance of the information gathered can heavily influence the final conclusion.

Example: To address urban air pollution, one might gather data on current pollution levels, sources of pollutants, existing policies, and strategies employed by other cities.

Step 3. Analysing the Information

Breaking down the gathered information, scrutinising its validity, and identifying patterns, contradictions, and relationships. This step ensures that the information is not just accepted at face value. Critical thinkers can differentiate between relevant and irrelevant information and detect biases or inaccuracies by analysing data.

Example: When examining data on pollution, one might notice that certain industries are major contributors or that pollution levels rise significantly at specific times of the year.

Step 4. Drawing Conclusions and Making Decisions

After thorough analysis, formulating an informed perspective, solution, or decision-based on the evidence. This is the culmination of the previous steps. Here, the critical thinker synthesises the information and applies logic to arrive at a reasoned conclusion.

Example: Based on the analysis, one might conclude that regulating specific industries and promoting public transportation during peak pollution periods can help reduce urban air pollution.

Step 5. Reflecting on the Process And The Conclusions Reached

Take a step back to assess the entire process, considering any potential biases, errors, or alternative perspectives. It is also about evaluating the feasibility and implications of the conclusions. Reflection ensures continuous learning and improvement. Individuals can refine their approach to future problems by evaluating their thinking process.

Example: Reflecting on the proposed solution to reduce pollution, one might consider its economic implications, potential industry resistance, and the need for public awareness campaigns.

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The Role of Critical Thinking in Different Academic Subjects

Critical thinking is a universal skill applicable across disciplines. Its methodologies might differ based on the subject, but its core principles remain consistent. Let us explore how critical thinking manifests in various academic domains:

1. Sciences

• Hypothesis Testing: Science often begins with a hypothesis—a proposed explanation for a phenomenon. Critical thinking is essential in formulating a testable hypothesis and determining its validity based on experimental results.
• Experimental Design: Designing experiments requires careful planning to ensure valid and reliable results. Critical thinking aids in identifying variables, ensuring controls, and determining the best methodologies to obtain accurate data.
• Example: In a biology experiment to test the effect of light on plant growth, critical thinking helps ensure variables like water and soil quality are consistent, allowing for a fair assessment of the light’s impact.

2. Humanities

• Analysing Texts: Humanities often involve studying texts—literature, historical documents, or philosophical treatises. Critical thinking lets students decode themes, discern authorial intent, and recognise underlying assumptions or biases.
• Understanding Contexts: Recognizing a text or artwork’s cultural, historical, or social contexts is pivotal. Critical thinking allows for a deeper appreciation of these contexts, providing a holistic understanding of the subject.
• Example: When studying Shakespeare’s “Othello,” critical thinking aids in understanding the play’s exploration of jealousy, race, and betrayal, while also appreciating its historical context in Elizabethan England.

3. Social Sciences

• Evaluating Arguments: Social sciences, such as sociology or political science, often present various theories or arguments about societal structures and behaviours. Critical thinking aids in assessing the merits of these arguments and recognising their implications.
• Understanding Biases: Since social sciences study human societies, they’re susceptible to biases. Critical thinking helps identify potential biases in research or theories, ensuring a more objective understanding.
• Example: In studying economic policies, critical thinking helps weigh the benefits and drawbacks of different economic models, considering both empirical data and theoretical arguments.

4. Mathematics

• Problem-Solving: Mathematics is more than just numbers; it is about solving problems. Critical thinking enables students to identify the best strategies to tackle problems, ensuring efficient and accurate solutions.
• Logical Deduction: Mathematical proofs and theorems rely on logical steps. Critical thinking ensures that each step is valid and the conclusions sound.
• Example: In geometry, when proving that two triangles are congruent, critical thinking helps ensure that each criterion (like side lengths or angles) is met and the logic of the proof is coherent.

Examples of Critical Thinking in Academics

Some of the critical thinking examples in academics are discussed below. 

Case Study 1: Evaluating A Scientific Research Paper

Scenario: A research paper claims that a new herbal supplement significantly improves memory in elderly individuals.

Critical Thinking Application:

Scrutinising Methodology:

• Was the study double-blind and placebo-controlled?
• How large was the sample size?
• Were the groups randomised?
• Were there any potential confounding variables?

Assessing Conclusions:

• Do the results conclusively support the claim, or are there other potential explanations?
• Are the statistical analyses robust, and do they show a significant difference?
• Is the effect size clinically relevant or just statistically significant?

Considering Broader Context:

• How does this study compare with existing literature on the subject?
• Were there any conflicts of interest, such as funding from the supplement company?

Critical analysis determined that while the study showed statistical significance, the effect size was minimal. Additionally, the sample size was small, and there was potential bias as the supplement manufacturer funded the study.

Case Study 2: Analysing a Literary Text

Scenario: A reading of F. Scott Fitzgerald’s “The Great Gatsby.”

Understanding Symbolism:

• What does the green light represent for Gatsby and in the broader context of the American Dream?
• How does the Valley of Ashes symbolise societal decay?

Recognising Authorial Intent:

• Why might Fitzgerald depict the characters’ lavish lifestyles amid underlying dissatisfaction?
• What critiques of American society is Fitzgerald potentially making?

Contextual Analysis:

• How does the era in which the novel was written (Roaring Twenties) influence its themes and characters?

Through critical analysis, the reader recognises that while “The Great Gatsby” is a tale of love and ambition, it’s also a poignant critique of the hollowness of the American Dream and the societal excesses of the 1920s.

Case Study 3: Decoding Historical Events

Scenario: The events leading up to the American Revolution.

Considering Multiple Perspectives:

• How did the British government view the colonies and their demands?
• What were the diverse perspectives within the American colonies, considering loyalists and patriots?

Assessing Validity of Sources:

• Which accounts are primary sources, and which are secondary?
• Are there potential biases in these accounts, based on their origins?

Analysing Causation and Correlation:

• Were taxes and representation the sole reasons for the revolution, or were there deeper economic and philosophical reasons?

Through critical analysis, the student understands that while taxation without representation was a significant catalyst, the American Revolution was also influenced by Enlightenment ideas, economic interests, and long-standing grievances against colonial policies.

Challenges to Developing Critical Thinking Skills

In our complex and rapidly changing world, the importance of critical thinking cannot be overstated. However, various challenges can impede the cultivation of these vital skills. 

1. Common Misconceptions and Cognitive Biases

Human brains often take shortcuts in processing information, leading to cognitive biases. Additionally, certain misconceptions about what constitutes critical thinking can hinder its development.

• Confirmation Bias: The tendency to search for, interpret, and recall information that confirms one’s pre-existing beliefs.
• Anchoring Bias: Relying too heavily on the first piece of information encountered when making decisions.
• Misconception: Believing that critical thinking merely means being critical or negative about ideas, rather than evaluating them objectively.

These biases can skew perception and decision-making, making it challenging to objectively approach issues.

2. The Influence of Technology and Social Media

While providing unprecedented access to information, the digital age also presents unique challenges. The barrage of information, the immediacy of social media reactions, and algorithms that cater to user preferences can hinder critical thought.

• Information Overload: The sheer volume of online data can make it difficult to discern credible sources from unreliable ones.
• Clickbait and Misinformation: Articles with sensational titles designed to generate clicks might lack depth or accuracy.
• Algorithmic Bias: Platforms showing users content based on past preferences can limit exposure to diverse viewpoints.

Relying too heavily on technology and social media can lead to superficial understanding, reduced attention spans, and a narrow worldview.

3. The Danger of Echo Chambers and Confirmation Bias

An echo chamber is a situation in which beliefs are amplified or reinforced by communication and repetition inside a closed system, cutting off differing viewpoints.

• Social Media Groups: Joining groups or following pages that only align with one’s beliefs can create a feedback loop, reinforcing existing opinions without challenge.
• Selective Media Consumption: Only watching news channels or reading websites that align with one’s political or social views.

Echo chambers reinforce confirmation bias, limit exposure to diverse perspectives, and can polarise opinions, making objective, critical evaluation of issues challenging.

Benefits of Promoting Critical Thinking in Education

When cultivated and promoted in educational settings, critical thinking can have transformative effects on students, equipping them with vital skills to navigate their academic journey and beyond. Here’s an exploration of the manifold benefits of emphasising critical thinking in education:

Improved Problem-Solving Skills

Critical thinking enables students to approach problems methodically, breaking them down into manageable parts, analysing each aspect, and synthesising solutions.

• Academic: Enhances students’ ability to tackle complex assignments, research projects, and unfamiliar topics.
• Beyond School: Prepares students for real-world challenges where they might encounter problems without predefined solutions.

Enhanced Creativity and Innovation

Critical thinking is not just analytical but also involves lateral thinking, helping students see connections between disparate ideas and encouraging imaginative solutions.

• Academic: Promotes richer discussions, more creative projects, and the ability to view topics from multiple angles.
• Beyond School: Equips students for careers and situations where innovative solutions can lead to advancements in fields like technology, arts, or social entrepreneurship.

Better Decision-Making Abilities

Critical thinkers evaluate information thoroughly, weigh potential outcomes, and make decisions based on evidence and reason rather than impulse or peer pressure.

• Academic: Helps students make informed choices about their studies, research directions, or group projects.
• Beyond School: Prepares students to make sound decisions in personal and professional spheres, from financial choices to ethical dilemmas.

Greater Resilience in the Face of Complex Challenges

Critical thinking nurtures a growth mindset. When students think critically, they are more likely to view challenges as opportunities for learning rather than insurmountable obstacles.

• Academic: Increases perseverance in difficult subjects, promoting a deeper understanding rather than superficial learning. Students become more resilient in handling academic pressures and setbacks.
• Beyond School: Cultivates individuals who can navigate the complexities of modern life, from career challenges to societal changes, with resilience and adaptability.

Frequently Asked Questions

What is critical thinking.

Critical thinking is the objective analysis and evaluation of an issue to form a judgment. It involves gathering relevant information, discerning potential biases, logically connecting ideas, and questioning assumptions. Essential for informed decision-making, it promotes scepticism and requires the ability to think independently and rationally.

What makes critical thinking?

Critical thinking arises from questioning assumptions, evaluating evidence, discerning fact from opinion, recognising biases, and logically connecting ideas. It demands curiosity, scepticism, and an open mind. By continuously challenging one’s beliefs and considering alternative viewpoints, one cultivates the ability to think clearly, rationally, and independently.

What is the purpose of critical thinking?

The purpose of critical thinking is to enable informed decisions by analysing and evaluating information objectively. It fosters understanding, problem-solving, and clarity, reducing the influence of biases and misconceptions. Through critical thinking, individuals discern truth, make reasoned judgments, and engage more effectively in discussions and debates.

How to improve critical thinking?

• Cultivate curiosity by asking questions.
• Practice active listening.
• Read widely and diversely.
• Engage in discussions and debates.
• Reflect on your thought processes.
• Identify biases and challenge assumptions.
• Solve problems systematically.

What are some critical thinking skills?

• Analysis: breaking concepts into parts.
• Evaluation: judging information’s validity.
• Inference: drawing logical conclusions.
• Explanation: articulating reasons.
• Interpretation: understanding meaning.
• Problem-solving: devising effective solutions.
• Decision-making: choosing the best options.

What is information literacy?

Information literacy is the ability to find, evaluate, and use information effectively. It encompasses understanding where to locate information, determining its credibility, distinguishing between facts and opinions, and using it responsibly. Essential in the digital age, it equips individuals to navigate the vast sea of data and make informed decisions.

What makes a credible source?

• Authorship by experts or professionals.
• Reliable publisher or institution backing.
• Transparent sourcing and references.
• Absence of bias or clear disclosure of it.
• Recent publications or timely updates.
• Peer review or editorial oversight.
• Clear, logical arguments.
• Reputability in its field or domain.

How do I analyse information critically?

• Determine the source’s credibility.
• Identify the main arguments or points.
• Examine the evidence provided.
• Spot inconsistencies or fallacies.
• Detect biases or unspoken assumptions.
• Cross-check facts with other sources.
• Evaluate the relevance to your context.
• Reflect on your own biases or beliefs.

You May Also Like

When researching or exploring a new topic, the distinction between primary and secondary sources is paramount. The validity, reliability, and relevance of the information you gather will heavily depend on the type of source you consult. 

In research and information acquisition, locating credible sources is paramount. Whether you are a scholar engaged in academic discourse, a professional endeavouring to remain abreast of developments in your field, or an inquisitive individual plunging into a specific subject, the capacity to procure dependable sources is an essential skill.

A credible source can be trusted to provide accurate, reliable, and unbiased information. Credible sources are essential for various purposes, including academic research, journalism, decision-making, and gaining knowledge on various topics.

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Critical Thinking in Science: Fostering Scientific Reasoning Skills in Students

ALI Staff | Published  July 13, 2023

Thinking like a scientist is a central goal of all science curricula.

As students learn facts, methodologies, and methods, what matters most is that all their learning happens through the lens of scientific reasoning what matters most is that it’s all through the lens of scientific reasoning.

That way, when it comes time for them to take on a little science themselves, either in the lab or by theoretically thinking through a solution, they understand how to do it in the right context.

One component of this type of thinking is being critical. Based on facts and evidence, critical thinking in science isn’t exactly the same as critical thinking in other subjects.

Students have to doubt the information they’re given until they can prove it’s right.

They have to truly understand what’s true and what’s hearsay. It’s complex, but with the right tools and plenty of practice, students can get it right.

What is critical thinking?

This particular style of thinking stands out because it requires reflection and analysis. Based on what's logical and rational, thinking critically is all about digging deep and going beyond the surface of a question to establish the quality of the question itself.

It ensures students put their brains to work when confronted with a question rather than taking every piece of information they’re given at face value.

It’s engaged, higher-level thinking that will serve them well in school and throughout their lives.

Why is critical thinking important?

Critical thinking is important when it comes to making good decisions.

It gives us the tools to think through a choice rather than quickly picking an option — and probably guessing wrong. Think of it as the all-important ‘why.’

Why is that true? Why is that right? Why is this the only option?

Finding answers to questions like these requires critical thinking. They require you to really analyze both the question itself and the possible solutions to establish validity.

Will that choice work for me? Does this feel right based on the evidence?

How does critical thinking in science impact students?

Critical thinking is essential in science.

It’s what naturally takes students in the direction of scientific reasoning since evidence is a key component of this style of thought.

It’s not just about whether evidence is available to support a particular answer but how valid that evidence is.

It’s about whether the information the student has fits together to create a strong argument and how to use verifiable facts to get a proper response.

Critical thinking in science helps students:

• Actively evaluate information
• Identify bias
• Separate the logic within arguments
• Analyze evidence

4 Ways to promote critical thinking

Figuring out how to develop critical thinking skills in science means looking at multiple strategies and deciding what will work best at your school and in your class.

Based on your student population, their needs and abilities, not every option will be a home run.

These particular examples are all based on the idea that for students to really learn how to think critically, they have to practice doing it. 

Each focuses on engaging students with science in a way that will motivate them to work independently as they hone their scientific reasoning skills.

Project-Based Learning

Project-based learning centers on critical thinking.

Teachers can shape a project around the thinking style to give students practice with evaluating evidence or other critical thinking skills.

Critical thinking also happens during collaboration, evidence-based thought, and reflection.

For example, setting students up for a research project is not only a great way to get them to think critically, but it also helps motivate them to learn.

Allowing them to pick the topic (that isn’t easy to look up online), develop their own research questions, and establish a process to collect data to find an answer lets students personally connect to science while using critical thinking at each stage of the assignment.

They’ll have to evaluate the quality of the research they find and make evidence-based decisions.

Self-Reflection

Adding a question or two to any lab practicum or activity requiring students to pause and reflect on what they did or learned also helps them practice critical thinking.

At this point in an assignment, they’ll pause and assess independently. 

You can ask students to reflect on the conclusions they came up with for a completed activity, which really makes them think about whether there's any bias in their answer.

Addressing Assumptions

One way critical thinking aligns so perfectly with scientific reasoning is that it encourages students to challenge all assumptions. 

Evidence is king in the science classroom, but even when students work with hard facts, there comes the risk of a little assumptive thinking.

Working with students to identify assumptions in existing research or asking them to address an issue where they suspend their own judgment and simply look at established facts polishes their that critical eye.

They’re getting practice without tossing out opinions, unproven hypotheses, and speculation in exchange for real data and real results, just like a scientist has to do.

Lab Activities With Trial-And-Error

Another component of critical thinking (as well as thinking like a scientist) is figuring out what to do when you get something wrong.

Backtracking can mean you have to rethink a process, redesign an experiment, or reevaluate data because the outcomes don’t make sense, but it’s okay.

The ability to get something wrong and recover is not only a valuable life skill, but it’s where most scientific breakthroughs start. Reminding students of this is always a valuable lesson.

Labs that include comparative activities are one way to increase critical thinking skills, especially when introducing new evidence that might cause students to change their conclusions once the lab has begun.

For example, you provide students with two distinct data sets and ask them to compare them.

With only two choices, there are a finite amount of conclusions to draw, but then what happens when you bring in a third data set? Will it void certain conclusions? Will it allow students to make new conclusions, ones even more deeply rooted in evidence?

Thinking like a scientist

When students get the opportunity to think critically, they’re learning to trust the data over their ‘gut,’ to approach problems systematically and make informed decisions using ‘good’ evidence.

When practiced enough, this ability will engage students in science in a whole new way, providing them with opportunities to dig deeper and learn more.

It can help enrich science and motivate students to approach the subject just like a professional would.

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Why Critical Thinking Is Important (& How to Improve It)

Last updated May 1, 2023. Edited and medically reviewed by Patrick Alban, DC . Written by Deane Alban .

By improving the quality of your thoughts and your decisions, better critical thinking skills can bring about a big positive change in your life. Learn how.

The quality of your life largely depends on the quality of the decisions you make.

Amazingly, the average person makes roughly 35,000 conscious decisions every day! 

Imagine how much better your life would be if there were a way to make better decisions, day in and day out?

Well, there is and you do it by boosting a skill called critical thinking .

Learning to master critical thinking can have a profoundly positive impact on nearly every aspect of your life.

What Exactly Is Critical Thinking?

The first documented account of critical thinking is the teachings of Socrates as recorded by Plato. 

Over time, the definition of critical thinking has evolved.

Most definitions of critical thinking are fairly complex and best understood by philosophy majors or psychologists.

For example, the Foundation for Critical Thinking , a nonprofit think tank, offers this definition:

“Critical thinking is the intellectually disciplined process of actively and skillfully conceptualizing, applying, analyzing, synthesizing, and/or evaluating information gathered from, or generated by, observation, experience, reflection, reasoning, or communication, as a guide to belief and action.”

If that makes your head spin, here are some definitions that you may relate to more easily.

Critical thinking is “reasonable, reflective thinking that is focused on deciding what to believe or do.”

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Or, a catchy way of defining critical thinking is “deciding what’s true and what you should do.”

But my favorite uber-simple definition is that critical thinking is simply “thinking about thinking.”

6 Major Benefits of Good Critical Thinking Skills

Whether or not you think critically can make the difference between success and failure in just about every area of your life.

Our human brains are imperfect and prone to irrationality, distortions, prejudices, and cognitive biases .

Cognitive biases are systematic patterns of irrational thinking.

While the number of cognitive biases varies depending on the source, Wikipedia, for example, lists nearly 200 of them ! 

Some of the most well-known cognitive biases include:

• catastrophic thinking
• confirmation bias
• fear of missing out (FOMO)

Critical thinking will help you move past the limitations of irrational thinking.

Here are some of the most important ways critical thinking can impact your life.

1. Critical Thinking Is a Key to Career Success

There are many professions where critical thinking is an absolute must.

Lawyers, analysts, accountants, doctors, engineers, reporters, and scientists of all kinds must apply critical thinking frequently.

But critical thinking is a skill set that is becoming increasingly valuable in a growing number of professions.

Critical thinking can help you in any profession where you must:

• analyze information
• systematically solve problems
• generate innovative solutions
• plan strategically
• think creatively
• present your work or ideas to others in a way that can be readily understood

And, as we enter the fourth industrial revolution , critical thinking has become one of the most sought-after skills.

According to the World Economic Forum , critical thinking and complex problem-solving are the two top in-demand skills that employers look for. 

Critical thinking is considered a soft or enterprise skill — a core attribute required to succeed in the workplace . 

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• Provides the building blocks to create new brain cells and brain chemicals
• Helps increase resilience to stress to avoid mental burnout
• Supplies the brain with the fuel it needs for mental energy

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According to The University of Arizona, other soft skills include : 

• interpersonal skills
• communication skills
• digital literacy

Critical thinking can help you develop the rest of these soft skills.

Developing your critical thinking can help you land a job since many employers will ask you interview questions or even give you a test to determine how well you can think critically.

It can also help you continually succeed in your career, since being a critical thinker is a powerful predictor of long-term success.

2. Critical Thinkers Make Better Decisions

Every day you make thousands of decisions.

Most of them are made by your subconscious , are not very important, and don’t require much thought, such as what to wear or what to have for lunch. 

But the most important decisions you make can be hard and require a lot of thought, such as when or if you should change jobs, relocate to a new city, buy a house, get married, or have kids.

At work, you may have to make decisions that can alter the course of your career or the lives of others.

Critical thinking helps you cope with everyday problems as they arise.

It promotes independent thinking and strengthens your inner “BS detector.”

It helps you make sense of the glut of data and information available, making you a smarter consumer who is less likely to fall for advertising hype, peer pressure, or scams.

3. Critical Thinking Can Make You Happier

Knowing and understanding yourself is an underappreciated path to happiness. 

We’ve already shown how your quality of life largely depends on the quality of your decisions, but equally as important is the quality of your thoughts.

Critical thinking is an excellent tool to help you better understand yourself and to learn to master your thoughts.

You can use critical thinking to free yourself from cognitive biases, negative thinking , and limiting beliefs that are holding you back in any area of your life.

Critical thinking can help you assess your strengths and weaknesses so that you know what you have to offer others and where you could use improvement.

Critical thinking will enable you to better express your thoughts, ideas, and beliefs.

Better communication helps others to understand you better, resulting in less frustration for both of you.

Critical thinking fosters creativity and out-of-the-box thinking that can be applied to any area of your life.

It gives you a process you can rely on, making decisions less stressful.

4. Critical Thinking Ensures That Your Opinions Are Well-Informed

We have access to more information than ever before .

Astoundingly, more data has been created in the past two years than in the entire previous history of mankind. 

Critical thinking can help you sort through the noise.

American politician, sociologist, and diplomat Daniel Patrick Moynihan once remarked , “You are entitled to your opinion. But you are not entitled to your own facts.” 

Critical thinking ensures your opinions are well-informed and based on the best available facts.

You’ll get a boost in confidence when you see that those around you trust your well-considered opinions.

5. Critical Thinking Improves Relationships

You might be concerned that critical thinking will turn you into a Spock-like character who is not very good at relationships.

But, in fact, the opposite is true.

Employing critical thinking makes you more open-minded and better able to understand others’ points of view.

Critical thinkers are more empathetic and in a better position to get along with different kinds of people.

Critical thinking keeps you from jumping to conclusions.

You can be counted on to be the voice of reason when arguments get heated.

You’ll be better able to detect when others:

• are being disingenuous
• don’t have your best interests at heart
• try to take advantage of or manipulate you

6. Critical Thinking Makes You a Better, More Informed Citizen

“An educated citizenry is a vital requisite for our survival as a free people.”

This quote has been incorrectly attributed to Thomas Jefferson , but regardless of the source, these words of wisdom are more relevant than ever. 

Critical thinkers are able to see both sides of any issue and are more likely to generate bipartisan solutions.

They are less likely to be swayed by propaganda or get swept up in mass hysteria.

They are in a better position to spot fake news when they see it.

5 Steps to Improve Your Critical Thinking Skills

Some people already have well-developed critical thinking skills.

These people are analytical, inquisitive, and open to new ideas.

And, even though they are confident in their own opinions, they seek the truth, even if it proves their existing ideas to be wrong.

They are able to connect the dots between ideas and detect inconsistencies in others’ thinking.

But regardless of the state of your critical thinking skills today, it’s a skill set you can develop.

While there are many techniques for thinking rationally, here’s a classic 5-step critical thinking process . 

How to Improve Your Critical Thinking Skills

Clearly define your question or problem.

This step is so important that Albert Einstein famously quipped:

“If I had an hour to solve a problem, I’d spend 55 minutes thinking about the problem and 5 minutes thinking about solutions.”

Gather Information to Help You Weigh the Options

Consider only the most useful and reliable information from the most reputable sources.

Disregard the rest.

Apply the Information and Ask Critical Questions

Scrutinize all information carefully with a skeptic’s eye.

Not sure what questions to ask?

You can’t go wrong starting with the “5 Ws” that any good investigator asks: Who? What? Where? When? Why?

Then finish by asking “How?”

You’ll find more thought-provoking questions on this Critical Thinking Skills Cheatsheet .

Consider the Implications

Look for potential unintended consequences.

Do a thought experiment about how your solution could play out in both the short term and the long run.

Explore the Full Spectrum of Viewpoints

Examine why others are drawn to differing points of view.

This will help you objectively evaluate your own viewpoint.

You may find critical thinkers who take an opposing view and this can help you find gaps in your own logic.

Watch the Video

This TED-Ed video on YouTube elaborates on the five steps to improve your critical thinking.

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• Increase your capacity to think critically, solve problems, and make decisions.

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Critical Thinking and Evaluating Information

• Introduction
• Words Of Wisdom

What Is Critical Thinking?

Five simple strategies to sharpen your critical thinking, were critical thinking skills used in this video.

• Critical Thinking and Reflective Judgement
• Problem Solving Skills
• Critical Reading
• Critical Writing
• Use the CRAAP Test
• Evaluating Fake News
• Explore Different Viewpoints
• The Peer-Review Process
• Critical ThinkingTutorials
• Books on Critical Thinking
• Explore More With These Links

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Critical thinking is a complex process of deliberation that involves a wide range of skills and attitudes. It includes:

• identifying other people's positions,  arguments and conclusions 
• evaluating the evidence  for alternative points of view
• weighing up the opposing arguments  and evidence fairly
• being able to read between the lines,  seeing behind surfaces and identifying false or unfair assumptions
• recognizing techniques  used to make certain positions more appealing than others, such as false logic and persuasive devices
• reflecting on issues  in a structured way, bringing logic and insight to bear
• drawing conclusions  about whether arguments are valid and justifiable, based on good evidence and sensible assumptions
• presenting a point of view  in a structured, clear, well-reasoned way that convinces others

(Contrell, 2011)

Check Out More From This Source: 

A well-cultivated critical thinker:

• raises vital questions and problems, formulating them clearly and precisely;
• gathers and assesses relevant information, using abstract ideas to interpret it effectively  come to well-reasoned conclusions and solutions, testing them against relevant criteria and standards;
• thinks openmindedly within alternative systems of thought, recognizing and assessing, as need be, their assumptions, implications, and practical consequences; and
• communicates effectively with others in figuring out solutions to complex problems.

Critical thinking is, in short, self-directed, self-disciplined, self-monitored, and self-corrective thinking. It presupposes assent to rigorous standards of excellence and mindful command of their use. It entails effective communication and problem solving abilities and a commitment to overcome our native egocentrism and sociocentrism.  

(Taken from Richard Paul and Linda Elder,  The Miniature Guide to Critical Thinking Concepts and Tools,  Foundation for Critical Thinking Press, 2008)

Source: criticalthinking.org

Is the sky really blue? That might seem obvious. But sometimes things are more nuanced and complicated than you think. Here are five strategies to boost your critical thinking skills. Animated by Ana Stefaniak. Made in partnership with The Open University.

Video Source: BBC Ideas

Video Source: Dr. Bachyrycz

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• Next: Critical Thinking and Reflective Judgement >>
• Last Updated: Mar 25, 2024 8:18 AM
• URL: https://libguides.coastalpines.edu/thinkcritically

A Crash Course in Critical Thinking

What you need to know—and read—about one of the essential skills needed today..

Posted April 8, 2024 | Reviewed by Michelle Quirk

• In research for "A More Beautiful Question," I did a deep dive into the current crisis in critical thinking.
• Many people may think of themselves as critical thinkers, but they actually are not.
• Here is a series of questions you can ask yourself to try to ensure that you are thinking critically.

Conspiracy theories. Inability to distinguish facts from falsehoods. Widespread confusion about who and what to believe.

These are some of the hallmarks of the current crisis in critical thinking—which just might be the issue of our times. Because if people aren’t willing or able to think critically as they choose potential leaders, they’re apt to choose bad ones. And if they can’t judge whether the information they’re receiving is sound, they may follow faulty advice while ignoring recommendations that are science-based and solid (and perhaps life-saving).

Moreover, as a society, if we can’t think critically about the many serious challenges we face, it becomes more difficult to agree on what those challenges are—much less solve them.

On a personal level, critical thinking can enable you to make better everyday decisions. It can help you make sense of an increasingly complex and confusing world.

In the new expanded edition of my book A More Beautiful Question ( AMBQ ), I took a deep dive into critical thinking. Here are a few key things I learned.

First off, before you can get better at critical thinking, you should understand what it is. It’s not just about being a skeptic. When thinking critically, we are thoughtfully reasoning, evaluating, and making decisions based on evidence and logic. And—perhaps most important—while doing this, a critical thinker always strives to be open-minded and fair-minded . That’s not easy: It demands that you constantly question your assumptions and biases and that you always remain open to considering opposing views.

In today’s polarized environment, many people think of themselves as critical thinkers simply because they ask skeptical questions—often directed at, say, certain government policies or ideas espoused by those on the “other side” of the political divide. The problem is, they may not be asking these questions with an open mind or a willingness to fairly consider opposing views.

When people do this, they’re engaging in “weak-sense critical thinking”—a term popularized by the late Richard Paul, a co-founder of The Foundation for Critical Thinking . “Weak-sense critical thinking” means applying the tools and practices of critical thinking—questioning, investigating, evaluating—but with the sole purpose of confirming one’s own bias or serving an agenda.

In AMBQ , I lay out a series of questions you can ask yourself to try to ensure that you’re thinking critically. Here are some of the questions to consider:

• Why do I believe what I believe?
• Are my views based on evidence?
• Have I fairly and thoughtfully considered differing viewpoints?
• Am I truly open to changing my mind?

Of course, becoming a better critical thinker is not as simple as just asking yourself a few questions. Critical thinking is a habit of mind that must be developed and strengthened over time. In effect, you must train yourself to think in a manner that is more effortful, aware, grounded, and balanced.

For those interested in giving themselves a crash course in critical thinking—something I did myself, as I was working on my book—I thought it might be helpful to share a list of some of the books that have shaped my own thinking on this subject. As a self-interested author, I naturally would suggest that you start with the new 10th-anniversary edition of A More Beautiful Question , but beyond that, here are the top eight critical-thinking books I’d recommend.

The Demon-Haunted World: Science as a Candle in the Dark , by Carl Sagan

This book simply must top the list, because the late scientist and author Carl Sagan continues to be such a bright shining light in the critical thinking universe. Chapter 12 includes the details on Sagan’s famous “baloney detection kit,” a collection of lessons and tips on how to deal with bogus arguments and logical fallacies.

Clear Thinking: Turning Ordinary Moments Into Extraordinary Results , by Shane Parrish

The creator of the Farnham Street website and host of the “Knowledge Project” podcast explains how to contend with biases and unconscious reactions so you can make better everyday decisions. It contains insights from many of the brilliant thinkers Shane has studied.

Good Thinking: Why Flawed Logic Puts Us All at Risk and How Critical Thinking Can Save the World , by David Robert Grimes

A brilliant, comprehensive 2021 book on critical thinking that, to my mind, hasn’t received nearly enough attention . The scientist Grimes dissects bad thinking, shows why it persists, and offers the tools to defeat it.

Think Again: The Power of Knowing What You Don't Know , by Adam Grant

Intellectual humility—being willing to admit that you might be wrong—is what this book is primarily about. But Adam, the renowned Wharton psychology professor and bestselling author, takes the reader on a mind-opening journey with colorful stories and characters.

Think Like a Detective: A Kid's Guide to Critical Thinking , by David Pakman

The popular YouTuber and podcast host Pakman—normally known for talking politics —has written a terrific primer on critical thinking for children. The illustrated book presents critical thinking as a “superpower” that enables kids to unlock mysteries and dig for truth. (I also recommend Pakman’s second kids’ book called Think Like a Scientist .)

Rationality: What It Is, Why It Seems Scarce, Why It Matters , by Steven Pinker

The Harvard psychology professor Pinker tackles conspiracy theories head-on but also explores concepts involving risk/reward, probability and randomness, and correlation/causation. And if that strikes you as daunting, be assured that Pinker makes it lively and accessible.

How Minds Change: The Surprising Science of Belief, Opinion and Persuasion , by David McRaney

David is a science writer who hosts the popular podcast “You Are Not So Smart” (and his ideas are featured in A More Beautiful Question ). His well-written book looks at ways you can actually get through to people who see the world very differently than you (hint: bludgeoning them with facts definitely won’t work).

A Healthy Democracy's Best Hope: Building the Critical Thinking Habit , by M Neil Browne and Chelsea Kulhanek

Neil Browne, author of the seminal Asking the Right Questions: A Guide to Critical Thinking, has been a pioneer in presenting critical thinking as a question-based approach to making sense of the world around us. His newest book, co-authored with Chelsea Kulhanek, breaks down critical thinking into “11 explosive questions”—including the “priors question” (which challenges us to question assumptions), the “evidence question” (focusing on how to evaluate and weigh evidence), and the “humility question” (which reminds us that a critical thinker must be humble enough to consider the possibility of being wrong).

Warren Berger is a longtime journalist and author of A More Beautiful Question .

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7 Critical Thinking and Evaluating Information

In this chapter, you will read a chapter on Critical Thinking and Evaluating Information from a module on Effective Learning Strategies, Student Success by Jazzabel Maya at Austin Community College, Creative Commons Attribution Non-Commercial Share Alike

Use warming up, working out, and cooling down strategies to read the chapter. You will participate in a discussion and write a journal after you finish reading.

Remember to write down the strategies you’re using to warm up, work out, and cool down.

LEARNING OBJECTIVES

By the end of this section, you will be able to:

• Define critical thinking
• Describe the role that logic plays in critical thinking
• Describe how both critical and creative thinking skills can be used to problem-solve
• Describe how critical thinking skills can be used to evaluate information
• Apply the CRAAP test to evaluate sources of information
• Identify strategies for developing yourself as a critical thinker

Critical Thinking and Evaluating Information

Critical Thinking

As a college student, you are tasked with engaging and expanding your thinking skills. One of the most important of these skills is critical thinking because it relates to nearly all tasks, situations, topics, careers, environments, challenges, and opportunities. It is a “domain-general” thinking skill, not one that is specific to a particular subject area.

What Is Critical Thinking?

Critical thinking  is clear, reasonable, reflective thinking focused on deciding what to believe or do. It means asking probing questions like “How do we know?” or “Is this true in every case or just in this instance?” It involves being skeptical and challenging assumptions rather than simply memorizing facts or blindly accepting what you hear or read.

Imagine, for example, that you’re reading a history textbook. You wonder who wrote it and why, because you detect certain biases in the writing. You find that the author has a limited scope of research focused only on a particular group within a population. In this case, your critical thinking reveals that there are “other sides to the story.”

Who are critical thinkers, and what characteristics do they have in common? Critical thinkers are usually curious and reflective people. They like to explore and probe new areas and seek knowledge, clarification, and new solutions. They ask pertinent questions, evaluate statements and arguments, and they distinguish between facts and opinion. They are also willing to examine their own beliefs, possessing a manner of humility that allows them to admit lack of knowledge or understanding when needed. They are open to changing their mind. Perhaps most of all, they actively enjoy learning, and seeking new knowledge is a lifelong pursuit. This may well be you!

No matter where you are on the road to being a critical thinker, you can always more fully develop and finely tune your skills. Doing so will help you develop more balanced arguments, express yourself clearly, read critically, and glean important information efficiently. Critical thinking skills will help you in any profession or any circumstance of life, from science to art to business to teaching. With critical thinking, you become a clearer thinker and problem solver.

Critical Thinking and Logic

Critical thinking is fundamentally a process of questioning information and data. You may question the information you read in a textbook, or you may question what a politician or a professor or a classmate says. You can also question a commonly-held belief or a new idea. With critical thinking, anything and everything is subject to question and examination for the purpose of logically constructing reasoned perspectives.

What Is Logic?

The word  logic  comes from the Ancient Greek  logike , referring to the science or art of reasoning. Using logic, a person evaluates arguments and reasoning and strives to distinguish between good and bad reasoning, or between truth and falsehood. Using logic, you can evaluate the ideas and claims of others, make good decisions, and form sound beliefs about the world. [1]

Questions of Logic in Critical Thinking

Let’s use a simple example of applying logic to a critical-thinking situation. In this hypothetical scenario, a man has a Ph.D. in political science, and he works as a professor at a local college. His wife works at the college, too. They have three young children in the local school system, and their family is well known in the community. The man is now running for political office. Are his credentials and experience sufficient for entering public office? Will he be effective in the political office? Some voters might believe that his personal life and current job, on the surface, suggest he will do well in the position, and they will vote for him. In truth, the characteristics described don’t guarantee that the man will do a good job. The information is somewhat irrelevant. What else might you want to know? How about whether the man had already held a political office and done a good job? In this case, we want to think critically about how much information is adequate in order to make a decision based on  logic  instead of  assumptions.

The following questions, presented in Figure 1, below, are ones you may apply to formulating a logical, reasoned perspective in the above scenario or any other situation:

• What’s happening?  Gather the basic information and begin to think of questions.
• Why is it important?  Ask yourself why it’s significant and whether or not you agree.
• What don’t I see?  Is there anything important missing?
• How do I know?  Ask yourself where the information came from and how it was constructed.
• Who is saying it?  What’s the position of the speaker and what is influencing them?
• What else?   What if?  What other ideas exist and are there other possibilities?

Problem-Solving with Critical Thinking

For most people, a typical day is filled with critical thinking and problem-solving challenges. In fact, critical thinking and problem-solving go hand-in-hand. They both refer to using knowledge, facts, and data to solve problems effectively. But with problem-solving, you are specifically identifying, selecting, and defending your solution. Below are some examples of using critical thinking to problem-solve:

• Your roommate was upset and said some unkind words to you, which put a crimp in the relationship. You try to see through the angry behaviors to determine how you might best support the roommate and help bring the relationship back to a comfortable spot.
• Your campus club has been languishing due to lack of participation and funds. The new club president, though, is a marketing major and has identified some strategies to interest students in joining and supporting the club. Implementation is forthcoming.
• Your final art class project challenges you to conceptualize form in new ways. On the last day of class when students present their projects, you describe the techniques you used to fulfill the assignment. You explain why and how you selected that approach.
• Your math teacher sees that the class is not quite grasping a concept. She uses clever questioning to dispel anxiety and guide you to a new understanding of the concept.
• You have a job interview for a position that you feel you are only partially qualified for, although you really want the job and you are excited about the prospects. You analyze how you will explain your skills and experiences in a way to show that you are a good match for the prospective employer.
• You are doing well in college, and most of your college and living expenses are covered. But there are some gaps between what you want and what you feel you can afford. You analyze your income, savings, and budget to better calculate what you will need to stay in college and maintain your desired level of spending.

Problem-Solving Action Checklist

Problem-solving can be an efficient and rewarding process, especially if you are organized and mindful of critical steps and strategies. Remember to assume the attributes of a good critical thinker: if you are curious, reflective, knowledge-seeking, open to change, probing, organized, and ethical, your challenge or problem will be less of a hurdle, and you’ll be in a good position to find intelligent solutions. The steps outlined in this checklist will help you adhere to these qualities in your approach to any problem:

Critical and Creative Thinking

Critical and creative thinking (described in more detail in Chapter 6: Theories of Learning) complement each other when it comes to problem-solving. The following words, by Dr. Andrew Robert Baker, are excerpted from his “Thinking Critically and Creatively” essay. Dr. Baker illuminates some of the many ways that college students will be exposed to critical and creative thinking and how it can enrich their learning experiences.

THINKING CRITICALLY AND CREATIVELY Critical thinking skills are perhaps the most fundamental skills involved in making judgments and solving problems. You use them every day, and you can continue improving them. The ability to think critically about a matter—to analyze a question, situation, or problem down to its most basic parts—is what helps us evaluate the accuracy and truthfulness of statements, claims, and information we read and hear. It is the sharp knife that, when honed, separates fact from fiction, honesty from lies, and the accurate from the misleading. We all use this skill to one degree or another almost every day. For example, we use critical thinking every day as we consider the latest consumer products and why one particular product is the best among its peers. Is it a quality product because a celebrity endorses it? Because a lot of other people may have used it? Because it is made by one company versus another? Or perhaps because it is made in one country or another? These are questions representative of critical thinking. The academic setting demands more of us in terms of critical thinking than everyday life. It demands that we evaluate information and analyze myriad issues. It is the environment where our critical thinking skills can be the difference between success and failure. In this environment we must consider information in an analytical, critical manner. We must ask questions—What is the source of this information? Is this source an expert one and what makes it so? Are there multiple perspectives to consider on an issue? Do multiple sources agree or disagree on an issue? Does quality research substantiate information or opinion? Do I have any personal biases that may affect my consideration of this information? It is only through purposeful, frequent, intentional questioning such as this that we can sharpen our critical thinking skills and improve as students, learners and researchers. While critical thinking analyzes information and roots out the true nature and facets of problems, it is creative thinking that drives progress forward when it comes to solving these problems. Exceptional creative thinkers are people that invent new solutions to existing problems that do not rely on past or current solutions. They are the ones who invent solution C when everyone else is still arguing between A and B. Creative thinking skills involve using strategies to clear the mind so that our thoughts and ideas can transcend the current limitations of a problem and allow us to see beyond barriers that prevent new solutions from being found. Brainstorming is the simplest example of intentional creative thinking that most people have tried at least once. With the quick generation of many ideas at once, we can block-out our brain’s natural tendency to limit our solution-generating abilities so we can access and combine many possible solutions/thoughts and invent new ones. It is sort of like sprinting through a race’s finish line only to find there is new track on the other side and we can keep going, if we choose. As with critical thinking, higher education both demands creative thinking from us and is the perfect place to practice and develop the skill. Everything from word problems in a math class, to opinion or persuasive speeches and papers, call upon our creative thinking skills to generate new solutions and perspectives in response to our professor’s demands. Creative thinking skills ask questions such as—What if? Why not? What else is out there? Can I combine perspectives/solutions? What is something no one else has brought-up? What is being forgotten/ignored? What about ______? It is the opening of doors and options that follows problem-identification. Consider an assignment that required you to compare two different authors on the topic of education and select and defend one as better. Now add to this scenario that your professor clearly prefers one author over the other. While critical thinking can get you as far as identifying the similarities and differences between these authors and evaluating their merits, it is creative thinking that you must use if you wish to challenge your professor’s opinion and invent new perspectives on the authors that have not previously been considered. So, what can we do to develop our critical and creative thinking skills? Although many students may dislike it, group work is an excellent way to develop our thinking skills. Many times I have heard from students their disdain for working in groups based on scheduling, varied levels of commitment to the group or project, and personality conflicts too, of course. True—it’s not always easy, but that is why it is so effective. When we work collaboratively on a project or problem we bring many brains to bear on a subject. These different brains will naturally develop varied ways of solving or explaining problems and examining information. To the observant individual we see that this places us in a constant state of back and forth critical/creative thinking modes. For example, in group work we are simultaneously analyzing information and generating solutions on our own, while challenging other’s analyses/ideas and responding to challenges to our own analyses/ideas. This is part of why students tend to avoid group work—it challenges us as thinkers and forces us to analyze others while defending ourselves, which is not something we are used to or comfortable with as most of our educational experiences involve solo work. Your professors know this—that’s why we assign it—to help you grow as students, learners, and thinkers! —Dr. Andrew Robert Baker,  Foundations of Academic Success: Words of Wisdom

Evaluating Information with Critical Thinking

Evaluating information can be one of the most complex tasks you will be faced with in college. But if you utilize the following four strategies, you will be well on your way to success:

• Read for understanding
• Examine arguments
• Clarify thinking
• Cultivate “habits of mind”

Read for Understanding

When you read, take notes or mark the text to track your thinking about what you are reading. As you make connections and ask questions in response to what you read,  you monitor your comprehension and enhance your long-term understanding of the material. You will want to mark important arguments and key facts. Indicate where you agree and disagree or have further questions. You don’t necessarily need to read every word, but make sure you understand the concepts or the intentions behind what is written. See the chapter on  Active Reading Strategies  for additional tips.

Examine Arguments

When you examine arguments or claims that an author, speaker, or other source is making, your goal is to identify and examine the hard facts. You can use the spectrum of authority strategy for this purpose. The spectrum of authority strategy assists you in identifying the “hot” end of an argument—feelings, beliefs, cultural influences, and societal influences—and the “cold” end of an argument—scientific influences. The most compelling arguments balance elements from both ends of the spectrum. The following video explains this strategy in further detail:

Clarify Thinking

When you use critical thinking to evaluate information, you need to clarify your thinking to yourself and likely to others. Doing this well is mainly a process of asking and answering probing questions, such as the logic questions discussed earlier. Design your questions to fit your needs, but be sure to cover adequate ground. What is the purpose? What question are we trying to answer? What point of view is being expressed? What assumptions are we or others making? What are the facts and data we know, and how do we know them? What are the concepts we’re working with? What are the conclusions, and do they make sense? What are the implications?

Cultivate “Habits of Mind”

“Habits of mind” are the personal commitments, values, and standards you have about the principle of good thinking. Consider your intellectual commitments, values, and standards. Do you approach problems with an open mind, a respect for truth, and an inquiring attitude? Some good habits to have when thinking critically are being receptive to having your opinions changed, having respect for others, being independent and not accepting something is true until you’ve had the time to examine the available evidence, being fair-minded, having respect for a reason, having an inquiring mind, not making assumptions, and always, especially, questioning your own conclusions—in other words, developing an intellectual work ethic. Try to work these qualities into your daily life.

In 2010, a textbook being used in fourth-grade classrooms in Virginia became big news for all the wrong reasons. The book,  Our Virginia  by Joy Masoff, had caught the attention of a parent who was helping her child do her homework, according to  an article in  The Washington Post . Carol Sheriff was a historian for the College of William and Mary and as she worked with her daughter, she began to notice some glaring historical errors, not the least of which was a passage which described how thousands of African Americans fought for the South during the Civil War.

Further investigation into the book revealed that, although the author had written textbooks on a variety of subjects, she was not a trained historian. The research she had done to write  Our Virginia,  and in particular the information she included about Black Confederate soldiers, was done through the Internet and included sources created by groups like the Sons of Confederate Veterans, an organization which promotes views of history that de-emphasize the role of slavery in the Civil War.

How did a book with errors like these come to be used as part of the curriculum and who was at fault? Was it Masoff for using untrustworthy sources for her research? Was it the editors who allowed the book to be published with these errors intact? Was it the school board for approving the book without more closely reviewing its accuracy?

There are a number of issues at play in the case of  Our Virginia , but there’s no question that evaluating sources is an important part of the research process and doesn’t just apply to Internet sources. Using inaccurate, irrelevant, or poorly researched sources can affect the quality of your own work. Being able to understand and apply the concepts that follow is crucial to becoming a more savvy user and creator of information.

When you begin evaluating sources, what should you consider? The  CRAAP test  is a series of common evaluative elements you can use to evaluate the  C urrency,  R elevance,  A uthority,  A ccuracy, and  P urpose of your sources. The CRAAP test was developed by librarians at California State University at Chico and it gives you a good, overall set of elements to look for when evaluating a resource. Let’s consider what each of these evaluative elements means. You can visit the ACC Library’s Web page for a tutorial on  Evaluating Information  using the CRAAP test.

One of the most important and interesting steps to take as you begin researching a subject is selecting the resources that will help you build your thesis and support your assertions. Certain topics require you to pay special attention to how current your resource is—because they are time sensitive, because they have evolved so much over the years, or because new research comes out on the topic so frequently. When evaluating the currency of an article, consider the following:

• When was the item written, and how frequently does the publication come out?
• Is there evidence of newly added or updated information in the item?
• If the information is dated, is it still suitable for your topic?
• How frequently does information change about your topic?

Understanding what resources are most applicable to your subject and why they are applicable can help you focus and refine your thesis. Many topics are broad and searching for information on them produces a wide range of resources. Narrowing your topic and focusing on resources specific to your needs can help reduce the piles of information and help you focus in on what is truly important to read and reference. When determining relevance consider the following:

• Does the item contain information relevant to your argument or thesis?
• Read the article’s introduction, thesis, and conclusion.
• Scan main headings and identify article keywords.
• For book resources, start with the index or table of contents—how wide a scope does the item have? Will you use part or all of this resource?
• Does the information presented support or refute your ideas?
• If the information refutes your ideas, how will this change your argument?
• Does the material provide you with current information?
• What is the material’s intended audience?

Understanding more about your information’s source helps you determine when, how, and where to use that information. Is your author an expert on the subject? Do they have some personal stake in the argument they are making? What is the author or information producer’s background? When determining the authority of your source, consider the following:

• What are the author’s credentials?
• What is the author’s level of education, experience, and/or occupation?
• What qualifies the author to write about this topic?
• What affiliations does the author have? Could these affiliations affect their position?
• What organization or body published the information? Is it authoritative? Does it have an explicit position or bias?

Determining where information comes from, if the evidence supports the information, and if the information has been reviewed or refereed can help you decide how and whether to use a source. When determining the accuracy of a source, consider the following:

• Is the source well-documented? Does it include footnotes, citations, or a bibliography?
• Is information in the source presented as fact, opinion, or propaganda? Are biases clear?
• Can you verify information from the references cited in the source?
• Is the information written clearly and free of typographical and grammatical mistakes? Does the source look to be edited before publication? A clean, well-presented paper does not always indicate accuracy, but usually at least means more eyes have been on the information.

Knowing why the information was created is a key to evaluation. Understanding the reason or purpose of the information, if the information has clear intentions, or if the information is fact, opinion, or propaganda will help you decide how and why to use information:

• Is the author’s purpose to inform, sell, persuade, or entertain?
• Does the source have an obvious bias or prejudice?
• Is the article presented from multiple points of view?
• Does the author omit important facts or data that might disprove their argument?
• Is the author’s language informal, joking, emotional, or impassioned?
• Is the information clearly supported by evidence?

When you feel overwhelmed by the information you are finding, the CRAAP test can help you determine which information is the most useful to your research topic. How you respond to what you find out using the CRAAP test will depend on your topic. Maybe you want to use two overtly biased resources to inform an overview of typical arguments in a particular field. Perhaps your topic is historical and currency means the past hundred years rather than the past one or two years. Use the CRAAP test, be knowledgeable about your topic, and you will be on your way to evaluating information efficiently and well!

Developing Yourself As a Critical Thinker

Critical thinking is a fundamental skill for college students, but it should also be a lifelong pursuit. Below are additional strategies to develop yourself as a critical thinker in college and in everyday life:

• Reflect and practice : Always reflect on what you’ve learned. Is it true all the time? How did you arrive at your conclusions?
• Use wasted time : It’s certainly important to make time for relaxing, but if you find you are indulging in too much of a good thing, think about using your time more constructively. Determine when you do your best thinking and try to learn something new during that part of the day.
• Redefine the way you see things : It can be very uninteresting to always think the same way. Challenge yourself to see familiar things in new ways. Put yourself in someone else’s shoes and consider things from a different angle or perspective.  If you’re trying to solve a problem, list all your concerns: what you need in order to solve it, who can help, what some possible barriers might be, etc. It’s often possible to reframe a problem as an opportunity. Try to find a solution where there seems to be none.
• Analyze the influences on your thinking and in your life : Why do you think or feel the way you do? Analyze your influences. Think about who in your life influences you. Do you feel or react a certain way because of social convention, or because you believe it is what is expected of you? Try to break out of any molds that may be constricting you.
• Express yourself : Critical thinking also involves being able to express yourself clearly. Most important in expressing yourself clearly is stating one point at a time. You might be inclined to argue every thought, but you might have greater impact if you focus just on your main arguments. This will help others to follow your thinking clearly. For more abstract ideas, assume that your audience may not understand. Provide examples, analogies, or metaphors where you can.
• Enhance your wellness : It’s easier to think critically when you take care of your mental and physical health. Try taking activity breaks throughout the day to reach 30 to 60 minutes of physical activity each day. Scheduling physical activity into your day can help lower stress and increase mental alertness. Also,  do your most difficult work when you have the most energy . Think about the time of day you are most effective and have the most energy. Plan to do your most difficult work during these times. And be sure to  reach out for help i f you feel you need assistance with your mental or physical health (see  Maintaining Your Mental and Physical Health  for more information).

Complete Section #2 Below: ACTIVITY: REFLECT ON CRITICAL THINKING

Key takeaways.

• Critical thinking is logical and reflective thinking focused on deciding what to believe or do.
• Critical thinking involves questioning and evaluating information.
• Critical and creative thinking both contribute to our ability to solve problems in a variety of contexts.
• Evaluating information is a complex, but essential, process. You can use the CRAAP test to help determine if sources and information are reliable.
• You can take specific actions to develop and strengthen your critical thinking skills.

Use the warm up, work out, and cool down strategies for a discussion.

Prepare for a discussion by writing down the main ideas and most important supporting points in this chapter. Prepare several of your own responses to the supporting points. These might be examples of how you use critical thinking in your life. What questions might you be prepared to ask your fellow students during this discussion.

After the discussion, reflect on what you’ve learned from the other students.

Use warm up, work out, and cool down strategies for this journal writing activity.

Think about someone you consider to be a critical thinker (friend, professor, historical figure, etc). What qualities does he/she have?

• Review some of the critical thinking strategies discussed on this page. Pick one strategy that makes sense to you. How can you apply this critical thinking technique to your academic work?
• Habits of mind are attitudes and beliefs that influence how you approach the world (i.e., inquiring attitude, open mind, respect for truth, etc). What is one habit of mind you would like to actively develop over the next year? How will you develop a daily practice to cultivate this habit?
• Write your responses in journal form, and submit according to your instructor’s guidelines.

Academic Literacy Copyright © by Lori-Beth Larsen is licensed under a Creative Commons Attribution 4.0 International License , except where otherwise noted.

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Scientific thinking and critical thinking are two intellectual processes that are considered keys in the basic and comprehensive education of citizens. For this reason, their development is also contemplated as among the main objectives of science education. However, in the literature about the two types of thinking in the context of science education, there are quite frequent allusions to one or the other indistinctly to refer to the same cognitive and metacognitive skills, usually leaving unclear what are their differences and what are their common aspects. The present work therefore was aimed at elucidating what the differences and relationships between these two types of thinking are. The conclusion reached was that, while they differ in regard to the purposes of their application and some skills or processes, they also share others and are related symbiotically in a metaphorical sense; i.e., each one makes sense or develops appropriately when it is nourished or enriched by the other. Finally, an orientative proposal is presented for an integrated development of the two types of thinking in science classes.

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Philosophical Inquiry and Critical Thinking in Primary and Secondary Science Education

Fostering scientific literacy and critical thinking in elementary science education.

Rui Marques Vieira & Celina Tenreiro-Vieira

Enhancing Scientific Thinking Through the Development of Critical Thinking in Higher Education

Avoid common mistakes on your manuscript.

Education is not the learning of facts, but the training of the mind to think. Albert Einstein

1 Introduction

In consulting technical reports, theoretical frameworks, research, and curricular reforms related to science education, one commonly finds appeals to scientific thinking and critical thinking as essential educational processes or objectives. This is confirmed in some studies that include exhaustive reviews of the literature in this regard such as those of Bailin ( 2002 ), Costa et al. ( 2020 ), and Santos ( 2017 ) on critical thinking, and of Klarh et al. ( 2019 ) and Lehrer and Schauble ( 2006 ) on scientific thinking. However, conceptualizing and differentiating between both types of thinking based on the above-mentioned documents of science education are generally difficult. In many cases, they are referred to without defining them, or they are used interchangeably to represent virtually the same thing. Thus, for example, the document A Framework for K-12 Science Education points out that “Critical thinking is required, whether in developing and refining an idea (an explanation or design) or in conducting an investigation” (National Research Council (NRC), 2012 , p. 46). The same document also refers to scientific thinking when it suggests that basic scientific education should “provide students with opportunities for a range of scientific activities and scientific thinking , including, but not limited to inquiry and investigation, collection and analysis of evidence, logical reasoning, and communication and application of information” (NRC, 2012 , p. 251).

A few years earlier, the report Science Teaching in Schools in Europe: Policies and Research (European Commission/Eurydice, 2006 ) included the dimension “scientific thinking” as part of standardized national science tests in European countries. This dimension consisted of three basic abilities: (i) to solve problems formulated in theoretical terms , (ii) to frame a problem in scientific terms , and (iii) to formulate scientific hypotheses . In contrast, critical thinking was not even mentioned in such a report. However, in subsequent similar reports by the European Commission/Eurydice ( 2011 , 2022 ), there are some references to the fact that the development of critical thinking should be a basic objective of science teaching, although these reports do not define it at any point.

The ENCIENDE report on early-year science education in Spain also includes an explicit allusion to critical thinking among its recommendations: “Providing students with learning tools means helping them to develop critical thinking , to form their own opinions, to distinguish between knowledge founded on the evidence available at a certain moment (evidence which can change) and unfounded beliefs” (Confederation of Scientific Societies in Spain (COSCE), 2011 , p. 62). However, the report makes no explicit mention to scientific thinking. More recently, the document “ Enseñando ciencia con ciencia ” (Teaching science with science) (Couso et al., 2020 ), sponsored by Spain’s Ministry of Education, also addresses critical thinking:

(…) with the teaching approach through guided inquiry students learn scientific content, learn to do science (procedures), learn what science is and how it is built, and this (...) helps to develop critical thinking , that is, to question any statement that is not supported by evidence. (Couso et al., 2020 , p. 54)

On the other hand, in referring to what is practically the same thing, the European report Science Education for Responsible Citizenship speaks of scientific thinking when it establishes that one of the challenges of scientific education should be: “To promote a culture of scientific thinking and inspire citizens to use evidence-based reasoning for decision making” (European Commission, 2015 , p. 14). However, the Pisa 2024 Strategic Vision and Direction for Science report does not mention scientific thinking but does mention critical thinking in noting that “More generally, (students) should be able to recognize the limitations of scientific inquiry and apply critical thinking when engaging with its results” (Organization for Economic Co-operation and Development (OECD), 2020 , p. 9).

The new Spanish science curriculum for basic education (Royal Decree 217/ 2022 ) does make explicit reference to scientific thinking. For example, one of the STEM (Science, Technology, Engineering, and Mathematics) competency descriptors for compulsory secondary education reads:

Use scientific thinking to understand and explain the phenomena that occur around them, trusting in knowledge as a motor for development, asking questions and checking hypotheses through experimentation and inquiry (...) showing a critical attitude about the scope and limitations of science. (p. 41,599)

Furthermore, when developing the curriculum for the subjects of physics and chemistry, the same provision clarifies that “The essence of scientific thinking is to understand what are the reasons for the phenomena that occur in the natural environment to then try to explain them through the appropriate laws of physics and chemistry” (Royal Decree 217/ 2022 , p. 41,659). However, within the science subjects (i.e., Biology and Geology, and Physics and Chemistry), critical thinking is not mentioned as such. Footnote 1 It is only more or less directly alluded to with such expressions as “critical analysis”, “critical assessment”, “critical reflection”, “critical attitude”, and “critical spirit”, with no attempt to conceptualize it as is done with regard to scientific thinking.

The above is just a small sample of the concepts of scientific thinking and critical thinking only being differentiated in some cases, while in others they are presented as interchangeable, using one or the other indistinctly to talk about the same cognitive/metacognitive processes or practices. In fairness, however, it has to be acknowledged—as said at the beginning—that it is far from easy to conceptualize these two types of thinking (Bailin, 2002 ; Dwyer et al., 2014 ; Ennis, 2018 ; Lehrer & Schauble, 2006 ; Kuhn, 1993 , 1999 ) since they feed back on each other, partially overlap, and share certain features (Cáceres et al., 2020 ; Vázquez-Alonso & Manassero-Mas, 2018 ). Neither is there unanimity in the literature on how to characterize each of them, and rarely have they been analyzed comparatively (e.g., Hyytinen et al., 2019 ). For these reasons, I believed it necessary to address this issue with the present work in order to offer some guidelines for science teachers interested in deepening into these two intellectual processes to promote them in their classes.

2 An Attempt to Delimit Scientific Thinking in Science Education

For many years, cognitive science has been interested in studying what scientific thinking is and how it can be taught in order to improve students’ science learning (Klarh et al., 2019 ; Zimmerman & Klarh, 2018 ). To this end, Kuhn et al. propose taking a characterization of science as argument (Kuhn, 1993 ; Kuhn et al., 2008 ). They argue that this is a suitable way of linking the activity of how scientists think with that of the students and of the public in general, since science is a social activity which is subject to ongoing debate, in which the construction of arguments plays a key role. Lehrer and Schauble ( 2006 ) link scientific thinking with scientific literacy, paying especial attention to the different images of science. According to those authors, these images would guide the development of the said literacy in class. The images of science that Leherer and Schauble highlight as characterizing scientific thinking are: (i) science-as-logical reasoning (role of domain-general forms of scientific reasoning, including formal logic, heuristic, and strategies applied in different fields of science), (ii) science-as-theory change (science is subject to permanent revision and change), and (iii) science-as-practice (scientific knowledge and reasoning are components of a larger set of activities that include rules of participation, procedural skills, epistemological knowledge, etc.).

Based on a literature review, Jirout ( 2020 ) defines scientific thinking as an intellectual process whose purpose is the intentional search for information about a phenomenon or facts by formulating questions, checking hypotheses, carrying out observations, recognizing patterns, and making inferences (a detailed description of all these scientific practices or competencies can be found, for example, in NRC, 2012 ; OECD, 2019 ). Therefore, for Jirout, the development of scientific thinking would involve bringing into play the basic science skills/practices common to the inquiry-based approach to learning science (García-Carmona, 2020 ; Harlen, 2014 ). For other authors, scientific thinking would include a whole spectrum of scientific reasoning competencies (Krell et al., 2022 ; Moore, 2019 ; Tytler & Peterson, 2004 ). However, these competences usually cover the same science skills/practices mentioned above. Indeed, a conceptual overlap between scientific thinking, scientific reasoning, and scientific inquiry is often found in science education goals (Krell et al., 2022 ). Although, according to Leherer and Schauble ( 2006 ), scientific thinking is a broader construct that encompasses the other two.

It could be said that scientific thinking is a particular way of searching for information using science practices Footnote 2 (Klarh et al., 2019 ; Zimmerman & Klarh, 2018 ; Vázquez-Alonso & Manassero-Mas, 2018 ). This intellectual process provides the individual with the ability to evaluate the robustness of evidence for or against a certain idea, in order to explain a phenomenon (Clouse, 2017 ). But the development of scientific thinking also requires metacognition processes. According to what Kuhn ( 2022 ) argues, metacognition is fundamental to the permanent control or revision of what an individual thinks and knows, as well as that of the other individuals with whom it interacts, when engaging in scientific practices. In short, scientific thinking demands a good connection between reasoning and metacognition (Kuhn, 2022 ). Footnote 3

From that perspective, Zimmerman and Klarh ( 2018 ) have synthesized a taxonomy categorizing scientific thinking, relating cognitive processes with the corresponding science practices (Table 1 ). It has to be noted that this taxonomy was prepared in line with the categorization of scientific practices proposed in the document A Framework for K-12 Science Education (NRC, 2012 ). This is why one needs to understand that, for example, the cognitive process of elaboration and refinement of hypotheses is not explicitly associated with the scientific practice of hypothesizing but only with the formulation of questions. Indeed, the K-12 Framework document does not establish hypothesis formulation as a basic scientific practice. Lederman et al. ( 2014 ) justify it by arguing that not all scientific research necessarily allows or requires the verification of hypotheses, for example, in cases of exploratory or descriptive research. However, the aforementioned document (NRC, 2012 , p. 50) does refer to hypotheses when describing the practice of developing and using models , appealing to the fact that they facilitate the testing of hypothetical explanations .

In the literature, there are also other interesting taxonomies characterizing scientific thinking for educational purposes. One of them is that of Vázquez-Alonso and Manassero-Mas ( 2018 ) who, instead of science practices, refer to skills associated with scientific thinking . Their characterization basically consists of breaking down into greater detail the content of those science practices that would be related to the different cognitive and metacognitive processes of scientific thinking. Also, unlike Zimmerman and Klarh’s ( 2018 ) proposal, Vázquez-Alonso and Manassero-Mas’s ( 2018 ) proposal explicitly mentions metacognition as one of the aspects of scientific thinking, which they call meta-process . In my opinion, the proposal of the latter authors, which shells out scientific thinking into a broader range of skills/practices, can be more conducive in order to favor its approach in science classes, as teachers would have more options to choose from to address components of this intellectual process depending on their teaching interests, the educational needs of their students and/or the learning objectives pursued. Table 2 presents an adapted characterization of the Vázquez-Alonso and Manassero-Mas’s ( 2018 ) proposal to address scientific thinking in science education.

3 Contextualization of Critical Thinking in Science Education

Theorization and research about critical thinking also has a long tradition in the field of the psychology of learning (Ennis, 2018 ; Kuhn, 1999 ), and its application extends far beyond science education (Dwyer et al., 2014 ). Indeed, the development of critical thinking is commonly accepted as being an essential goal of people’s overall education (Ennis, 2018 ; Hitchcock, 2017 ; Kuhn, 1999 ; Willingham, 2008 ). However, its conceptualization is not simple and there is no unanimous position taken on it in the literature (Costa et al., 2020 ; Dwyer et al., 2014 ); especially when trying to relate it to scientific thinking. Thus, while Tena-Sánchez and León-Medina ( 2022 ) Footnote 4 and McBain et al. ( 2020 ) consider critical thinking to be the basis of or forms part of scientific thinking, Dowd et al. ( 2018 ) understand scientific thinking to be just a subset of critical thinking. However, Vázquez-Alonso and Manassero-Mas ( 2018 ) do not seek to determine whether critical thinking encompasses scientific thinking or vice versa. They consider that both types of knowledge share numerous skills/practices and the progressive development of one fosters the development of the other as a virtuous circle of improvement. Other authors, such as Schafersman ( 1991 ), even go so far as to say that critical thinking and scientific thinking are the same thing. In addition, some views on the relationship between critical thinking and scientific thinking seem to be context-dependent. For example, Hyytine et al. ( 2019 ) point out that in the perspective of scientific thinking as a component of critical thinking, the former is often used to designate evidence-based thinking in the sciences, although this view tends to dominate in Europe but not in the USA context. Perhaps because of this lack of consensus, the two types of thinking are often confused, overlapping, or conceived as interchangeable in education.

Even with such a lack of unanimous or consensus vision, there are some interesting theoretical frameworks and definitions for the development of critical thinking in education. One of the most popular definitions of critical thinking is that proposed by The National Council for Excellence in Critical Thinking (1987, cited in Inter-American Teacher Education Network, 2015 , p. 6). This conceives of it as “the intellectually disciplined process of actively and skillfully conceptualizing, applying, analyzing, synthesizing, and/or evaluating information gathered from, or generated by, observation, experience, reflection, reasoning, or communication, as a guide to belief and action”. In other words, critical thinking can be regarded as a reflective and reasonable class of thinking that provides people with the ability to evaluate multiple statements or positions that are defensible to then decide which is the most defensible (Clouse, 2017 ; Ennis, 2018 ). It thus requires, in addition to a basic scientific competency, notions about epistemology (Kuhn, 1999 ) to understand how knowledge is constructed. Similarly, it requires skills for metacognition (Hyytine et al., 2019 ; Kuhn, 1999 ; Magno, 2010 ) since critical thinking “entails awareness of one’s own thinking and reflection on the thinking of self and others as objects of cognition” (Dean & Kuhn, 2003 , p. 3).

In science education, one of the most suitable scenarios or resources, but not the only one, Footnote 5 to address all these aspects of critical thinking is through the analysis of socioscientific issues (SSI) (Taylor et al., 2006 ; Zeidler & Nichols, 2009 ). Without wishing to expand on this here, I will only say that interesting works can be found in the literature that have analyzed how the discussion of SSIs can favor the development of critical thinking skills (see, e.g., López-Fernández et al., 2022 ; Solbes et al., 2018 ). For example, López-Fernández et al. ( 2022 ) focused their teaching-learning sequence on the following critical thinking skills: information analysis, argumentation, decision making, and communication of decisions. Even some authors add the nature of science (NOS) to this framework (i.e., SSI-NOS-critical thinking), as, for example, Yacoubian and Khishfe ( 2018 ) in order to develop critical thinking and how this can also favor the understanding of NOS (Yacoubian, 2020 ). In effect, as I argued in another work on the COVID-19 pandemic as an SSI, in which special emphasis was placed on critical thinking, an informed understanding of how science works would have helped the public understand why scientists were changing their criteria to face the pandemic in the light of new data and its reinterpretations, or that it was not possible to go faster to get an effective and secure medical treatment for the disease (García-Carmona, 2021b ).

In the recent literature, there have also been some proposals intended to characterize critical thinking in the context of science education. Table 3 presents two of these by way of example. As can be seen, both proposals share various components for the development of critical thinking (respect for evidence, critically analyzing/assessing the validity/reliability of information, adoption of independent opinions/decisions, participation, etc.), but that of Blanco et al. ( 2017 ) is more clearly contextualized in science education. Likewise, that of these authors includes some more aspects (or at least does so more explicitly), such as developing epistemological Footnote 6 knowledge of science (vision of science…) and on its interactions with technology, society, and environment (STSA relationships), and communication skills. Therefore, it offers a wider range of options for choosing critical thinking skills/processes to promote it in science classes. However, neither proposal refers to metacognitive skills, which are also essential for developing critical thinking (Kuhn, 1999 ).

3.1 Critical thinking vs. scientific thinking in science education: differences and similarities

In accordance with the above, it could be said that scientific thinking is nourished by critical thinking, especially when deciding between several possible interpretations and explanations of the same phenomenon since this generally takes place in a context of debate in the scientific community (Acevedo-Díaz & García-Carmona, 2017 ). Thus, the scientific attitude that is perhaps most clearly linked to critical thinking is the skepticism with which scientists tend to welcome new ideas (Normand, 2008 ; Sagan, 1987 ; Tena-Sánchez and León-Medina, 2022 ), especially if they are contrary to well-established scientific knowledge (Bell, 2009 ). A good example of this was the OPERA experiment (García-Carmona & Acevedo-Díaz, 2016a ), which initially seemed to find that neutrinos could move faster than the speed of light. This finding was supposed to invalidate Albert Einstein’s theory of relativity (the finding was later proved wrong). In response, Nobel laureate in physics Sheldon L. Glashow went so far as to state that:

the result obtained by the OPERA collaboration cannot be correct. If it were, we would have to give up so many things, it would be such a huge sacrifice... But if it is, I am officially announcing it: I will shout to Mother Nature: I’m giving up! And I will give up Physics. (BBVA Foundation, 2011 )

Indeed, scientific thinking is ultimately focused on getting evidence that may support an idea or explanation about a phenomenon, and consequently allow others that are less convincing or precise to be discarded. Therefore when, with the evidence available, science has more than one equally defensible position with respect to a problem, the investigation is considered inconclusive (Clouse, 2017 ). In certain cases, this gives rise to scientific controversies (Acevedo-Díaz & García-Carmona, 2017 ) which are not always resolved based exclusively on epistemic or rational factors (Elliott & McKaughan, 2014 ; Vallverdú, 2005 ). Hence, it is also necessary to integrate non-epistemic practices into the framework of scientific thinking (García-Carmona, 2021a ; García-Carmona & Acevedo-Díaz, 2018 ), practices that transcend the purely rational or cognitive processes, including, for example, those related to emotional or affective issues (Sinatra & Hofer, 2021 ). From an educational point of view, this suggests that for students to become more authentically immersed in the way of working or thinking scientifically, they should also learn to feel as scientists do when they carry out their work (Davidson et al., 2020 ). Davidson et al. ( 2020 ) call it epistemic affect , and they suggest that it could be approach in science classes by teaching students to manage their frustrations when they fail to achieve the expected results; Footnote 7 or, for example, to moderate their enthusiasm with favorable results in a scientific inquiry by activating a certain skepticism that encourages them to do more testing. And, as mentioned above, for some authors, having a skeptical attitude is one of the actions that best visualize the application of critical thinking in the framework of scientific thinking (Normand, 2008 ; Sagan, 1987 ; Tena-Sánchez and León-Medina, 2022 ).

On the other hand, critical thinking also draws on many of the skills or practices of scientific thinking, as discussed above. However, in contrast to scientific thinking, the coexistence of two or more defensible ideas is not, in principle, a problem for critical thinking since its purpose is not so much to invalidate some ideas or explanations with respect to others, but rather to provide the individual with the foundations on which to position themself with the idea/argument they find most defensible among several that are possible (Ennis, 2018 ). For example, science with its methods has managed to explain the greenhouse effect, the phenomenon of the tides, or the transmission mechanism of the coronavirus. For this, it had to discard other possible explanations as they were less valid in the investigations carried out. These are therefore issues resolved by the scientific community which create hardly any discussion at the present time. However, taking a position for or against the production of energy in nuclear power plants transcends the scope of scientific thinking since both positions are, in principle, equally defensible. Indeed, within the scientific community itself there are supporters and detractors of the two positions, based on the same scientific knowledge. Consequently, it is critical thinking, which requires the management of knowledge and scientific skills, a basic understanding of epistemic (rational or cognitive) and non-epistemic (social, ethical/moral, economic, psychological, cultural, ...) aspects of the nature of science, as well as metacognitive skills, which helps the individual forge a personal foundation on which to position themself in one place or another, or maintain an uncertain, undecided opinion.

In view of the above, one can summarize that scientific thinking and critical thinking are two different intellectual processes in terms of purpose, but are related symbiotically (i.e., one would make no sense without the other or both feed on each other) and that, in their performance, they share a fair number of features, actions, or mental skills. According to Cáceres et al. ( 2020 ) and Hyytine et al. ( 2019 ), the intellectual skills that are most clearly common to both types of thinking would be searching for relationships between evidence and explanations , as well as investigating and logical thinking to make inferences . To this common space, I would also add skills for metacognition in accordance with what has been discussed about both types of knowledge (Khun, 1999 , 2022 ).

In order to compile in a compact way all that has been argued so far, in Table 4 , I present my overview of the relationship between scientific thinking and critical thinking. I would like to point out that I do not intend to be extremely extensive in the compilation, in the sense that possibly more elements could be added in the different sections, but rather to represent above all the aspects that distinguish and share them, as well as the mutual enrichment (or symbiosis) between them.

4 A Proposal for the Integrated Development of Critical Thinking and Scientific Thinking in Science Classes

Once the differences, common aspects, and relationships between critical thinking and scientific thinking have been discussed, it would be relevant to establish some type of specific proposal to foster them in science classes. Table 5 includes a possible script to address various skills or processes of both types of thinking in an integrated manner. However, before giving guidance on how such skills/processes could be approached, I would like to clarify that while all of them could be dealt within the context of a single school activity, I will not do so in this way. First, because I think that it can give the impression that the proposal is only valid if it is applied all at once in a specific learning situation, which can also discourage science teachers from implementing it in class due to lack of time or training to do so. Second, I think it can be more interesting to conceive the proposal as a set of thinking skills or actions that can be dealt with throughout the different science contents, selecting only (if so decided) some of them, according to educational needs or characteristics of the learning situation posed in each case. Therefore, in the orientations for each point of the script or grouping of these, I will use different examples and/or contexts. Likewise, these orientations in the form of comments, although founded in the literature, should be considered only as possibilities to do so, among many others possible.

Motivation and predisposition to reflect and discuss (point i ) demands, on the one hand, that issues are chosen which are attractive for the students. This can be achieved, for example, by asking the students directly what current issues, related to science and its impact or repercussions, they would like to learn about, and then decide on which issue to focus on (García-Carmona, 2008 ). Or the teacher puts forward the issue directly in class, trying for it be current, to be present in the media, social networks, etc., or what they think may be of interest to their students based on their teaching experience. In this way, each student is encouraged to feel questioned or concerned as a citizen because of the issue that is going to be addressed (García-Carmona, 2008 ). Also of possible interest is the analysis of contemporary, as yet unresolved socioscientific affairs (Solbes et al., 2018 ), such as climate change, science and social justice, transgenic foods, homeopathy, and alcohol and drug use in society. But also, everyday questions can be investigated which demand a decision to be made, such as “What car to buy?” (Moreno-Fontiveros et al., 2022 ), or “How can we prevent the arrival of another pandemic?” (Ushola & Puig, 2023 ).

On the other hand, it is essential that the discussion about the chosen issue is planned through an instructional process that generates an environment conducive to reflection and debate, with a view to engaging the students’ participation in it. This can be achieved, for example, by setting up a role-play game (Blanco-López et al., 2017 ), especially if the issue is socioscientific, or by critical and reflective reading of advertisements with scientific content (Campanario et al., 2001 ) or of science-related news in the daily media (García-Carmona, 2014 , 2021a ; Guerrero-Márquez & García-Carmona, 2020 ; Oliveras et al., 2013 ), etc., for subsequent discussion—all this, in a collaborative learning setting and with a clear democratic spirit.

Respect for scientific evidence (point ii ) should be the indispensable condition in any analysis and discussion from the prisms of scientific and of critical thinking (Erduran, 2021 ). Although scientific knowledge may be impregnated with subjectivity during its construction and is revisable in the light of new evidence ( tentativeness of scientific knowledge), when it is accepted by the scientific community it is as objective as possible (García-Carmona & Acevedo-Díaz, 2016b ). Therefore, promoting trust and respect for scientific evidence should be one of the primary educational challenges to combating pseudoscientists and science deniers (Díaz & Cabrera, 2022 ), whose arguments are based on false beliefs and assumptions, anecdotes, and conspiracy theories (Normand, 2008 ). Nevertheless, it is no simple task to achieve the promotion or respect for scientific evidence (Fackler, 2021 ) since science deniers, for example, consider that science is unreliable because it is imperfect (McIntyre, 2021 ). Hence the need to promote a basic understanding of NOS (point iii ) as a fundamental pillar for the development of both scientific thinking and critical thinking. A good way to do this would be through explicit and reflective discussion about controversies from the history of science (Acevedo-Díaz & García-Carmona, 2017 ) or contemporary controversies (García-Carmona, 2021b ; García-Carmona & Acevedo-Díaz, 2016a ).

Also, with respect to point iii of the proposal, it is necessary to manage basic scientific knowledge in the development of scientific and critical thinking skills (Willingham, 2008 ). Without this, it will be impossible to develop a minimally serious and convincing argument on the issue being analyzed. For example, if one does not know the transmission mechanism of a certain disease, it is likely to be very difficult to understand or justify certain patterns of social behavior when faced with it. In general, possessing appropriate scientific knowledge on the issue in question helps to make the best interpretation of the data and evidence available on this issue (OECD, 2019 ).

The search for information from reliable sources, together with its analysis and interpretation (points iv to vi ), are essential practices both in purely scientific contexts (e.g., learning about the behavior of a given physical phenomenon from literature or through enquiry) and in the application of critical thinking (e.g., when one wishes to take a personal, but informed, position on a particular socio-scientific issue). With regard to determining the credibility of information with scientific content on the Internet, Osborne et al. ( 2022 ) propose, among other strategies, to check whether the source is free of conflicts of interest, i.e., whether or not it is biased by ideological, political or economic motives. Also, it should be checked whether the source and the author(s) of the information are sufficiently reputable.

Regarding the interpretation of data and evidence, several studies have shown the difficulties that students often have with this practice in the context of enquiry activities (e.g., Gobert et al., 2018 ; Kanari & Millar, 2004 ; Pols et al., 2021 ), or when analyzing science news in the press (Norris et al., 2003 ). It is also found that they have significant difficulties in choosing the most appropriate data to support their arguments in causal analyses (Kuhn & Modrek, 2022 ). However, it must be recognized that making interpretations or inferences from data is not a simple task; among other reasons, because their construction is influenced by multiple factors, both epistemic (prior knowledge, experimental designs, etc.) and non-epistemic (personal expectations, ideology, sociopolitical context, etc.), which means that such interpretations are not always the same for all scientists (García-Carmona, 2021a ; García-Carmona & Acevedo-Díaz, 2018 ). For this reason, the performance of this scientific practice constitutes one of the phases or processes that generate the most debate or discussion in a scientific community, as long as no consensus is reached. In order to improve the practice of making inferences among students, Kuhn and Lerman ( 2021 ) propose activities that help them develop their own epistemological norms to connect causally their statements with the available evidence.

Point vii refers, on the one hand, to an essential scientific practice: the elaboration of evidence-based scientific explanations which generally, in a reasoned way, account for the causality, properties, and/or behavior of the phenomena (Brigandt, 2016 ). In addition, point vii concerns the practice of argumentation . Unlike scientific explanations, argumentation tries to justify an idea, explanation, or position with the clear purpose of persuading those who defend other different ones (Osborne & Patterson, 2011 ). As noted above, the complexity of most socioscientific issues implies that they have no unique valid solution or response. Therefore, the content of the arguments used to defend one position or another are not always based solely on purely rational factors such as data and scientific evidence. Some authors defend the need to also deal with non-epistemic aspects of the nature of science when teaching it (García-Carmona, 2021a ; García-Carmona & Acevedo-Díaz, 2018 ) since many scientific and socioscientific controversies are resolved by different factors or go beyond just the epistemic (Vallverdú, 2005 ).

To defend an idea or position taken on an issue, it is not enough to have scientific evidence that supports it. It is also essential to have skills for the communication and discussion of ideas (point viii ). The history of science shows how the difficulties some scientists had in communicating their ideas scientifically led to those ideas not being accepted at the time. A good example for students to become aware of this is the historical case of Semmelweis and puerperal fever (Aragón-Méndez et al., 2019 ). Its reflective reading makes it possible to conclude that the proposal of this doctor that gynecologists disinfect their hands, when passing from one parturient to another to avoid contagions that provoked the fever, was rejected by the medical community not only for epistemic reasons, but also for the difficulties that he had to communicate his idea. The history of science also reveals that some scientific interpretations were imposed on others at certain historical moments due to the rhetorical skills of their proponents although none of the explanations would convincingly explain the phenomenon studied. An example is the case of the controversy between Pasteur and Liebig about the phenomenon of fermentation (García-Carmona & Acevedo-Díaz, 2017 ), whose reading and discussion in science class would also be recommended in this context of this critical and scientific thinking skill. With the COVID-19 pandemic, for example, the arguments of some charlatans in the media and on social networks managed to gain a certain influence in the population, even though scientifically they were muddled nonsense (García-Carmona, 2021b ). Therefore, the reflective reading of news on current SSIs such as this also constitutes a good resource for the same educational purpose. In general, according to Spektor-Levy et al. ( 2009 ), scientific communication skills should be addressed explicitly in class, in a progressive and continuous manner, including tasks of information seeking, reading, scientific writing, representation of information, and representation of the knowledge acquired.

Finally (point ix ), a good scientific/critical thinker must be aware of what they know, of what they have doubts about or do not know, to this end continuously practicing metacognitive exercises (Dean & Kuhn, 2003 ; Hyytine et al., 2019 ; Magno, 2010 ; Willingham, 2008 ). At the same time, they must recognize the weaknesses and strengths of the arguments of their peers in the debate in order to be self-critical if necessary, as well as to revising their own ideas and arguments to improve and reorient them, etc. ( self-regulation ). I see one of the keys of both scientific and critical thinking being the capacity or willingness to change one’s mind, without it being frowned upon. Indeed, quite the opposite since one assumes it to occur thanks to the arguments being enriched and more solidly founded. In other words, scientific and critical thinking and arrogance or haughtiness towards the rectification of ideas or opinions do not stick well together.

5 Final Remarks

For decades, scientific thinking and critical thinking have received particular attention from different disciplines such as psychology, philosophy, pedagogy, and specific areas of this last such as science education. The two types of knowledge represent intellectual processes whose development in students, and in society in general, is considered indispensable for the exercise of responsible citizenship in accord with the demands of today’s society (European Commission, 2006 , 2015 ; NRC, 2012 ; OECD, 2020 ). As has been shown however, the task of their conceptualization is complex, and teaching students to think scientifically and critically is a difficult educational challenge (Willingham, 2008 ).

Aware of this, and after many years dedicated to science education, I felt the need to organize my ideas regarding the aforementioned two types of thinking. In consulting the literature about these, I found that, in many publications, scientific thinking and critical thinking are presented or perceived as being interchangeable or indistinguishable; a conclusion also shared by Hyytine et al. ( 2019 ). Rarely have their differences, relationships, or common features been explicitly studied. So, I considered that it was a matter needing to be addressed because, in science education, the development of scientific thinking is an inherent objective, but, when critical thinking is added to the learning objectives, there arise more than reasonable doubts about when one or the other would be used, or both at the same time. The present work came about motivated by this, with the intention of making a particular contribution, but based on the relevant literature, to advance in the question raised. This converges in conceiving scientific thinking and critical thinking as two intellectual processes that overlap and feed into each other in many aspects but are different with respect to certain cognitive skills and in terms of their purpose. Thus, in the case of scientific thinking, the aim is to choose the best possible explanation of a phenomenon based on the available evidence, and it therefore involves the rejection of alternative explanatory proposals that are shown to be less coherent or convincing. Whereas, from the perspective of critical thinking, the purpose is to choose the most defensible idea/option among others that are also defensible, using both scientific and extra-scientific (i.e., moral, ethical, political, etc.) arguments. With this in mind, I have described a proposal to guide their development in the classroom, integrating them under a conception that I have called, metaphorically, a symbiotic relationship between two modes of thinking.

Critical thinking is mentioned literally in other of the curricular provisions’ subjects such as in Education in Civics and Ethical Values or in Geography and History (Royal Decree 217/2022).

García-Carmona ( 2021a ) conceives of them as activities that require the comprehensive application of procedural skills, cognitive and metacognitive processes, and both scientific knowledge and knowledge of the nature of scientific practice .

Kuhn ( 2021 ) argues that the relationship between scientific reasoning and metacognition is especially fostered by what she calls inhibitory control , which basically consists of breaking down the whole of a thought into parts in such a way that attention is inhibited on some of those parts to allow a focused examination of the intended mental content.

Specifically, Tena-Sánchez and León-Medina (2020) assume that critical thinking is at the basis of rational or scientific skepticism that leads to questioning any claim that does not have empirical support.

As discussed in the introduction, the inquiry-based approach is also considered conducive to addressing critical thinking in science education (Couso et al., 2020 ; NRC, 2012 ).

Epistemic skills should not be confused with epistemological knowledge (García-Carmona, 2021a ). The former refers to skills to construct, evaluate, and use knowledge, and the latter to understanding about the origin, nature, scope, and limits of scientific knowledge.

For this purpose, it can be very useful to address in class, with the help of the history and philosophy of science, that scientists get more wrong than right in their research, and that error is always an opportunity to learn (García-Carmona & Acevedo-Díaz, 2018 ).

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García-Carmona, A. Scientific Thinking and Critical Thinking in Science Education . Sci & Educ (2023). https://doi.org/10.1007/s11191-023-00460-5

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Why Is Critical Thinking Important? A Survival Guide

Updated: December 7, 2023

Published: April 2, 2020

Why is critical thinking important? The decisions that you make affect your quality of life. And if you want to ensure that you live your best, most successful and happy life, you’re going to want to make conscious choices. That can be done with a simple thing known as critical thinking. Here’s how to improve your critical thinking skills and make decisions that you won’t regret.

What Is Critical Thinking?

You’ve surely heard of critical thinking, but you might not be entirely sure what it really means, and that’s because there are many definitions. For the most part, however, we think of critical thinking as the process of analyzing facts in order to form a judgment. Basically, it’s thinking about thinking.

How Has The Definition Evolved Over Time?

The first time critical thinking was documented is believed to be in the teachings of Socrates , recorded by Plato. But throughout history, the definition has changed.

Today it is best understood by philosophers and psychologists and it’s believed to be a highly complex concept. Some insightful modern-day critical thinking definitions include :

• “Reasonable, reflective thinking that is focused on deciding what to believe or do.”
• “Deciding what’s true and what you should do.”

The Importance Of Critical Thinking

Why is critical thinking important? Good question! Here are a few undeniable reasons why it’s crucial to have these skills.

1. Critical Thinking Is Universal

Critical thinking is a domain-general thinking skill. What does this mean? It means that no matter what path or profession you pursue, these skills will always be relevant and will always be beneficial to your success. They are not specific to any field.

2. Crucial For The Economy

Our future depends on technology, information, and innovation. Critical thinking is needed for our fast-growing economies, to solve problems as quickly and as effectively as possible.

3. Improves Language & Presentation Skills

In order to best express ourselves, we need to know how to think clearly and systematically — meaning practice critical thinking! Critical thinking also means knowing how to break down texts, and in turn, improve our ability to comprehend.

4. Promotes Creativity

By practicing critical thinking, we are allowing ourselves not only to solve problems but also to come up with new and creative ideas to do so. Critical thinking allows us to analyze these ideas and adjust them accordingly.

5. Important For Self-Reflection

Without critical thinking, how can we really live a meaningful life? We need this skill to self-reflect and justify our ways of life and opinions. Critical thinking provides us with the tools to evaluate ourselves in the way that we need to.

6. The Basis Of Science & Democracy

In order to have a democracy and to prove scientific facts, we need critical thinking in the world. Theories must be backed up with knowledge. In order for a society to effectively function, its citizens need to establish opinions about what’s right and wrong (by using critical thinking!).

Benefits Of Critical Thinking

We know that critical thinking is good for society as a whole, but what are some benefits of critical thinking on an individual level? Why is critical thinking important for us?

1. Key For Career Success

Critical thinking is crucial for many career paths. Not just for scientists, but lawyers , doctors, reporters, engineers , accountants, and analysts (among many others) all have to use critical thinking in their positions. In fact, according to the World Economic Forum, critical thinking is one of the most desirable skills to have in the workforce, as it helps analyze information, think outside the box, solve problems with innovative solutions, and plan systematically.

2. Better Decision Making

There’s no doubt about it — critical thinkers make the best choices. Critical thinking helps us deal with everyday problems as they come our way, and very often this thought process is even done subconsciously. It helps us think independently and trust our gut feeling.

3. Can Make You Happier!

While this often goes unnoticed, being in touch with yourself and having a deep understanding of why you think the way you think can really make you happier. Critical thinking can help you better understand yourself, and in turn, help you avoid any kind of negative or limiting beliefs, and focus more on your strengths. Being able to share your thoughts can increase your quality of life.

4. Form Well-Informed Opinions

There is no shortage of information coming at us from all angles. And that’s exactly why we need to use our critical thinking skills and decide for ourselves what to believe. Critical thinking allows us to ensure that our opinions are based on the facts, and help us sort through all that extra noise.

5. Better Citizens

One of the most inspiring critical thinking quotes is by former US president Thomas Jefferson: “An educated citizenry is a vital requisite for our survival as a free people.” What Jefferson is stressing to us here is that critical thinkers make better citizens, as they are able to see the entire picture without getting sucked into biases and propaganda.

6. Improves Relationships

While you may be convinced that being a critical thinker is bound to cause you problems in relationships, this really couldn’t be less true! Being a critical thinker can allow you to better understand the perspective of others, and can help you become more open-minded towards different views.

7. Promotes Curiosity

Critical thinkers are constantly curious about all kinds of things in life, and tend to have a wide range of interests. Critical thinking means constantly asking questions and wanting to know more, about why, what, who, where, when, and everything else that can help them make sense of a situation or concept, never taking anything at face value.

8. Allows For Creativity

Critical thinkers are also highly creative thinkers, and see themselves as limitless when it comes to possibilities. They are constantly looking to take things further, which is crucial in the workforce.

9. Enhances Problem Solving Skills

Those with critical thinking skills tend to solve problems as part of their natural instinct. Critical thinkers are patient and committed to solving the problem, similar to Albert Einstein, one of the best critical thinking examples, who said “It’s not that I’m so smart; it’s just that I stay with problems longer.” Critical thinkers’ enhanced problem-solving skills makes them better at their jobs and better at solving the world’s biggest problems. Like Einstein, they have the potential to literally change the world.

10. An Activity For The Mind

Just like our muscles, in order for them to be strong, our mind also needs to be exercised and challenged. It’s safe to say that critical thinking is almost like an activity for the mind — and it needs to be practiced. Critical thinking encourages the development of many crucial skills such as logical thinking, decision making, and open-mindness.

11. Creates Independence

When we think critically, we think on our own as we trust ourselves more. Critical thinking is key to creating independence, and encouraging students to make their own decisions and form their own opinions.

12. Crucial Life Skill

Critical thinking is crucial not just for learning, but for life overall! Education isn’t just a way to prepare ourselves for life, but it’s pretty much life itself. Learning is a lifelong process that we go through each and every day.

How to Think Critically

Now that you know the benefits of thinking critically, how do you actually do it?

How To Improve Your Critical Thinking

• Define Your Question: When it comes to critical thinking, it’s important to always keep your goal in mind. Know what you’re trying to achieve, and then figure out how to best get there.
• Gather Reliable Information: Make sure that you’re using sources you can trust — biases aside. That’s how a real critical thinker operates!
• Ask The Right Questions: We all know the importance of questions, but be sure that you’re asking the right questions that are going to get you to your answer.
• Look Short & Long Term: When coming up with solutions, think about both the short- and long-term consequences. Both of them are significant in the equation.
• Explore All Sides: There is never just one simple answer, and nothing is black or white. Explore all options and think outside of the box before you come to any conclusions.

How Is Critical Thinking Developed At School?

Critical thinking is developed in nearly everything we do. However, much of this important skill is encouraged to be practiced at school, and rightfully so! Critical thinking goes beyond just thinking clearly — it’s also about thinking for yourself.

When a teacher asks a question in class, students are given the chance to answer for themselves and think critically about what they learned and what they believe to be accurate. When students work in groups and are forced to engage in discussion, this is also a great chance to expand their thinking and use their critical thinking skills.

How Does Critical Thinking Apply To Your Career?

Once you’ve finished school and entered the workforce, your critical thinking journey only expands and grows from here!

Impress Your Employer

Employers value employees who are critical thinkers, ask questions, offer creative ideas, and are always ready to offer innovation against the competition. No matter what your position or role in a company may be, critical thinking will always give you the power to stand out and make a difference.

Careers That Require Critical Thinking

Some of many examples of careers that require critical thinking include:

• Human resources specialist
• Marketing associate
• Business analyst

Truth be told however, it’s probably harder to come up with a professional field that doesn’t require any critical thinking!

Photo by  Oladimeji Ajegbile  from  Pexels

What is someone with critical thinking skills capable of doing.

Someone with critical thinking skills is able to think rationally and clearly about what they should or not believe. They are capable of engaging in their own thoughts, and doing some reflection in order to come to a well-informed conclusion.

A critical thinker understands the connections between ideas, and is able to construct arguments based on facts, as well as find mistakes in reasoning.

The Process Of Critical Thinking

The process of critical thinking is highly systematic.

What Are Your Goals?

Critical thinking starts by defining your goals, and knowing what you are ultimately trying to achieve.

Once you know what you are trying to conclude, you can foresee your solution to the problem and play it out in your head from all perspectives.

What Does The Future Of Critical Thinking Hold?

The future of critical thinking is the equivalent of the future of jobs. In 2020, critical thinking was ranked as the 2nd top skill (following complex problem solving) by the World Economic Forum .

We are dealing with constant unprecedented changes, and what success is today, might not be considered success tomorrow — making critical thinking a key skill for the future workforce.

Why Is Critical Thinking So Important?

Why is critical thinking important? Critical thinking is more than just important! It’s one of the most crucial cognitive skills one can develop.

By practicing well-thought-out thinking, both your thoughts and decisions can make a positive change in your life, on both a professional and personal level. You can hugely improve your life by working on your critical thinking skills as often as you can.

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What Are Critical Thinking Skills and Why Are They Important?

Learn what critical thinking skills are, why they’re important, and how to develop and apply them in your workplace and everyday life.

We often use critical thinking skills without even realizing it. When you make a decision, such as which cereal to eat for breakfast, you're using critical thinking to determine the best option for you that day.

Critical thinking is like a muscle that can be exercised and built over time. It is a skill that can help propel your career to new heights. You'll be able to solve workplace issues, use trial and error to troubleshoot ideas, and more.

We'll take you through what it is and some examples so you can begin your journey in mastering this skill.

What is critical thinking?

Critical thinking is the ability to interpret, evaluate, and analyze facts and information that are available, to form a judgment or decide if something is right or wrong.

More than just being curious about the world around you, critical thinkers make connections between logical ideas to see the bigger picture. Building your critical thinking skills means being able to advocate your ideas and opinions, present them in a logical fashion, and make decisions for improvement.

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Why is critical thinking important?

Critical thinking is useful in many areas of your life, including your career. It makes you a well-rounded individual, one who has looked at all of their options and possible solutions before making a choice.

According to the University of the People in California, having critical thinking skills is important because they are [ 1 ]:

Crucial for the economy

Essential for improving language and presentation skills

Very helpful in promoting creativity

Important for self-reflection

The basis of science and democracy 

Critical thinking skills are used every day in a myriad of ways and can be applied to situations such as a CEO approaching a group project or a nurse deciding in which order to treat their patients.

Examples of common critical thinking skills

Critical thinking skills differ from individual to individual and are utilized in various ways. Examples of common critical thinking skills include:

Identification of biases: Identifying biases means knowing there are certain people or things that may have an unfair prejudice or influence on the situation at hand. Pointing out these biases helps to remove them from contention when it comes to solving the problem and allows you to see things from a different perspective.

Research: Researching details and facts allows you to be prepared when presenting your information to people. You’ll know exactly what you’re talking about due to the time you’ve spent with the subject material, and you’ll be well-spoken and know what questions to ask to gain more knowledge. When researching, always use credible sources and factual information.

Open-mindedness: Being open-minded when having a conversation or participating in a group activity is crucial to success. Dismissing someone else’s ideas before you’ve heard them will inhibit you from progressing to a solution, and will often create animosity. If you truly want to solve a problem, you need to be willing to hear everyone’s opinions and ideas if you want them to hear yours.

Analysis: Analyzing your research will lead to you having a better understanding of the things you’ve heard and read. As a true critical thinker, you’ll want to seek out the truth and get to the source of issues. It’s important to avoid taking things at face value and always dig deeper.

Problem-solving: Problem-solving is perhaps the most important skill that critical thinkers can possess. The ability to solve issues and bounce back from conflict is what helps you succeed, be a leader, and effect change. One way to properly solve problems is to first recognize there’s a problem that needs solving. By determining the issue at hand, you can then analyze it and come up with several potential solutions.

How to develop critical thinking skills

You can develop critical thinking skills every day if you approach problems in a logical manner. Here are a few ways you can start your path to improvement:

1. Ask questions.

Be inquisitive about everything. Maintain a neutral perspective and develop a natural curiosity, so you can ask questions that develop your understanding of the situation or task at hand. The more details, facts, and information you have, the better informed you are to make decisions.

2. Practice active listening.

Utilize active listening techniques, which are founded in empathy, to really listen to what the other person is saying. Critical thinking, in part, is the cognitive process of reading the situation: the words coming out of their mouth, their body language, their reactions to your own words. Then, you might paraphrase to clarify what they're saying, so both of you agree you're on the same page.

3. Develop your logic and reasoning.

This is perhaps a more abstract task that requires practice and long-term development. However, think of a schoolteacher assessing the classroom to determine how to energize the lesson. There's options such as playing a game, watching a video, or challenging the students with a reward system. Using logic, you might decide that the reward system will take up too much time and is not an immediate fix. A video is not exactly relevant at this time. So, the teacher decides to play a simple word association game.

Scenarios like this happen every day, so next time, you can be more aware of what will work and what won't. Over time, developing your logic and reasoning will strengthen your critical thinking skills.

Learn tips and tricks on how to become a better critical thinker and problem solver through online courses from notable educational institutions on Coursera. Start with Introduction to Logic and Critical Thinking from Duke University or Mindware: Critical Thinking for the Information Age from the University of Michigan.

Article sources

University of the People, “ Why is Critical Thinking Important?: A Survival Guide , https://www.uopeople.edu/blog/why-is-critical-thinking-important/.” Accessed May 18, 2023.

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Strengthening Critical Health Literacy for Health Information Appraisal: An Approach from Argumentation Theory

Sara rubinelli.

1 Department of Health Sciences and Medicine, University of Lucerne, 6002 Luzern, Switzerland; [email protected] (A.O.); [email protected] (C.Z.); [email protected] (N.D.)

2 Swiss Paraplegic Research, 6207 Nottwil, Switzerland; [email protected]

Alexander Ort

Claudia zanini, maddalena fiordelli.

3 Institute of Public Health, Università della Svizzera Italiana, 6900 Lugano, Switzerland

Nicola Diviani

Associated data.

Not applicable.

The overload of health information has been a major challenge during the COVID-19 pandemic. Public health authorities play a primary role in managing this information. However, individuals have to apply critical health literacy to evaluate it. The objective of this paper is to identify targets for strengthening critical health literacy by focusing on the field of argumentation theory. This paper is based on the textual analysis of instances of health information through the lens of argumentation theory. The results show that critical health literacy benefits from: (1) understanding the concept of argument and the supporting reasons, (2) identifying the main argument schemes, and (3) the knowledge and use of the main critical questions to check the soundness of arguments. This study operationalizes the main aspects of critical health literacy. It calls for specific educational and training initiatives in the field. Moreover, it argues in favor of broadening the current educational curricula to empower individuals to engage in informed and quality decision making. Strengthening individuals’ critical health literacy involves interventions to empower in argument evaluation. For this purpose, argumentation theory has analytical and normative frameworks that can be adapted within a lay-audience education concept.

1. Introduction

The recent COVID-19 pandemic and the related mushrooming of fake news, conspiracy theories, and more general disinformation has put the so-called “infodemic” in the global spotlight. The WHO refers to infodemic as the overload of information, including mis/disinformation [ 1 ]. Due to the increased discourse around those issues, one could get the impression that the start of the COVID-19 health crisis also caused the infodemic. However, the phenomenon is not new and dates back at least two decades to the advent of the Internet in the late nineties [ 2 ]. The introduction of this new technology also led to the extensive availability of health-related information, which goes hand in hand with low-threshold accessibility to everyone with an internet connection. Regardless of the vast benefits, online health information—because of its uncontrollable nature—also has the potential to have detrimental effects on citizens and society as a whole. For example, citizens, especially those with a limited ability to distinguish between good and bad information, could take crucial health-related decisions based on wrong or incomplete information, consequently putting themselves and others at risk of suboptimal health outcomes [ 3 ]. A concrete example in the context of the COVID-19 pandemic is the abundance of fake news surrounding face masks; different sources have claimed that they do not protect from the virus or even that they are unhealthy. Such disinformation can lead to detrimental outcomes, as people following such claims are less likely or would entirely refrain from wearing a face mask, with possible dire consequences [ 4 , 5 , 6 ].

Public health authorities can play a central role in this context [ 7 ]. One possible solution to counter the respective risks would be to design systems that allow monitoring and contain the spread of mis/disinformation. Additionally, many endeavors in this direction are now ongoing at the national and international level, such as the World Health Organization’s “Call for Action: Managing the infodemic” [ 8 ]. However, due to the nature and magnitude of the phenomenon, it is unlikely to identify and control all the information available, especially online. Therefore, it is crucial to equip individuals with the necessary set of skills to understand and evaluate health information or, in other words, to distinguish between information and disinformation. This set of skills is referred to as critical health literacy [ 9 , 10 , 11 ]. Although the potential of critical health literacy is now widely recognized by researchers and policymakers, its operationalization is still in its infancy, thus hindering the development of targeted interventions [ 12 ].

This paper aims to identify targets for strengthening an individual’s critical literacy about the appraisal of health information. This objective is achieved by theorizing and illustrating some main principles for evaluating information rooted in the field of argumentation theory and by contextualizing them from a health-educational perspective.

2. Analytical Approach

Argumentation theory is conceptually and empirically well developed [ 13 ]. Specifically, “argumentation theory”, in its very essence, is the body of knowledge that deals with the study of arguments, that is, of claims supported by reasons [ 14 , 15 , 16 , 17 ]. For example, in the sentence, “these flowers are beautiful because they have beautiful colors”, “these flowers are beautiful” is the claim, and “they have beautiful colors” is the reason that supports the claim. In generalized terms, argumentation theory studies how to support claims by reasons and whether this support is sound or unsound . Still, little attention has been paid to harness its main achievements: the potential to guide and educate people in the process of appraising health information. This is unfortunate, as taking the essence of this knowledge into account, argumentation theory can provide valuable insights on how to guide people in the process of evaluation, i.e., whether a particular piece of health information contains arguments and whether these arguments are qualitatively high or poor [ 18 , 19 ]. Consequently, information containing poor-quality arguments should be questioned because, as we shall see, it could be false, irrelevant, or manipulative [ 20 ].

To fill this gap, this paper applies the approach of textual analysis to the main theoretical frameworks from argumentation theory. It analyzes examples of arguments—inspired by actual instances of dis/misinformation that actually circulated during the global COVID-19 health crisis—with the goal to pointing towards ways to identify low-quality health information. In doing so, the following sections will explain the value of the following argumentation theory concepts: the structure and purpose of arguments, argument schemes, fallacies and critical questions. Implications of the analysis will then been discussed in the context of critical health literacy.

3. Insights from Argumentation Theory

3.1. the structure and purpose of an argument.

As anticipated above, argumentation is a process of communication where the speaker supports their point of view (a claim) by means of reasons. Although among English speakers, the term “argument” often connotes “quarrel”, its technical meaning, at the basis of argumentation theory, indicates the process and act of discussing with reasoning for or against a claim. For instance, the claim “people should wear masks” might be supported by the reasons “because it is a key measure for suppressing the transmission of COVID-19 (reason 1) and for saving lives (reason 2)”.

• Key insight 1: People should be made aware of the concept of argument and that the acceptance of a claim derives from the approval of the supporting reasons that, as such, need to be verified and evaluated.

People make and present claims and arguments because they want to convince an audience to think or act in a certain way. A health promotion institute can present arguments to convince people to wash their hands frequently during the day. However, due to vested interests, one might try to convince an audience that COVID-19 is like the flu and provide their reasons for this (for instance, that “he/she is an expert and knows about that”).

Although, as we shall see below, reasons can be false, wrong, or misleading, the fact that a speaker provides them to support their claim is an important way to verify the quality of the claim itself [ 21 ]. Indeed, if someone says “Don’t wear a mask” without saying why the claim is weak in the sense that the rationale behind it is unclear. If the speaker says, “Don’t wear a mask (claim) because COVID-19 is no worse than the flu (reason 1) and masks are even hazardous as they impair breathing (reason 2)”, reasons 1 and 2 offer grounds for verifying the claims and for deciding whether one should believe in it. Then, of course, the reasons provided are not sound. However, to carry out this evaluation, the concept of arguments has to be clear in people’s minds, as well as the supporting reasons and the need to check their quality. In the discussion section of this paper, we shall highlight how this presupposes the daily work of health institutions in presenting and discussing evidence so that people have quality sources to evaluate the reasons behind claims.

A primary skill in the context of critical health literacy and information appraisal is to check whether or not the claims put forward present reasons and, subsequently, whether or not these are valid and supported. Indeed, in the current world of influencers and opinion leaders, it is not unusual that people believe in claims that are unsupported simply because they trust the speaker. The Elaboration Likelihood Model [ 22 ] shows that, indeed, people might appraise information and arguments within a peripheral perspective, focused on aspects that do not point to the goodness of a claim. To agree that “masks kill” simply because the person who says this receives trust within a particular community is a pitfall in critical thinking skills. Additionally, evaluating the soundness of argumentation based on trust in the speaker and without paying proper attention to the actual content of what he/she says is problematic: It is an evaluation based on a peripheral cue and, thus, potentially misleading. Even if the claim comes from a famous health professional, it is still unsupported due to a lack of substantiating scientific data. Moreover, the experience of a person, even if they are perceived as an expert, is not sufficient to substantiate a general claim. Especially if, such as in this case, there is scientific evidence supporting the use of masks during the pandemic.

3.2. Argument Schemes

The literature on argumentation theory has identified argument schemes as central components of an argument structure, which is crucial for evaluating argument strength. Specifically, an argument scheme is a template that indicates a specific connection between the claim and the supporting reason/s. Each argument scheme has a name [ 23 ].

• Key insight 2: People should be able to recognize the most essential argument schemes to evaluate the arguments themselves.

According to pragma-dialectics, among the most potent approaches to the study of argumentation, a threefold typology of arguments exists [ 24 ], which we exemplify below through suboptimal information about COVID-19. Starting from an analysis of the argument schemes, we will then show how it is possible to identify why this information is of low quality.

The first argument scheme is named symptomatic argumentation , which poses that a claim can be supported by citing in its reasons a particular sign, symptom, or distinguishing mark of what is claimed. For example, in the following argument:

“This person is right about COVID-19 because he is a doctor.”

The fact that this person is a doctor is presented as a sign of the quality of what he says about COVID-19.

    Y is true of X,

      because : Z is true of X

      and : Z is symptomatic of Y.

    This person (X) is right about COVID-19 (Y).

      because: This person (X) is a doctor (Z).

      and: Being a doctor is a sign of knowing about health conditions, resulting in true health-related statements.

Figure 1 below shows the example in a visual chart:

Example of symptomatic argumentation.

The second type of argument schemes is based on a comparison relation , meaning that a claim is supported by showing that something similar occurs elsewhere. Therefore, people should also accept it for resemblance. For example, in the following argument:

“The COVID-19 vaccine is dangerous because past vaccines have also been found to be dangerous.”

Here, the comparison with other vaccines is a reason for supporting the danger of the COVID-19 vaccine.

    Y is appropriate for Y,

      because : Y is appropriate for Z

      and : Z is comparable to X.

    The COVID-19 vaccine (X) is dangerous (Y)

      because: past vaccines (Z) are dangerous (Y)

      and: past vaccines (Z) are comparable to the COVID-19 vaccine (X).

Figure 2 below shows the example in a visual chart.

Example of argument based on a comparison relation.

The third type of argument scheme is based on a causal relation , where the claim is supported by making a causal connection between itself and its grounding reason. For example, in the following argument:

“Some people contracted COVID-19 because they used 5G technologies.”

      and : Z leads to Y.

    Using 5G technologies (Z) leads to contracting COVID-19 (Y).

      because : Some people (X) contracted COVID-19 (Y)

      and : Some people (X) used 5G technologies (Z)

Figure 3 below shows the example in a visual chart.

Example of argument based on a causal relation.

Highlighting the formal structure of arguments seems to be technical. Yet, these three main types of argument schemes can be used to analyze and evaluate all types of arguments, where claims support reasons. Strengthening people’s skills in understanding and using these argument schemes is, thus, important as a base to avoid taking claims for granted or relying on peripheral cues that can be misleading.

3.3. Fallacies and Critical Questions

Identifying the structure of arguments in terms of their claims and supporting reasons is the essential step to evaluating the quality of the arguments themselves and defining whether they are of good or poor quality. When, indeed, the reasons put forward to support a claim are false, irrelevant, or, in general, not appropriate, the argument itself lacks soundness. The literature refers to these as “fallacies” that are invalid or faulty reasoning [ 25 ]. It is not always easy to recognize fallacies. Yet, the primary step is to instruct people on how to detach this type of disinformation.

• Key insight 3: People should learn to identify the structure of an argument and then verify if it is fallacious by asking critical questions.

More specifically, people can identify the weaknesses of arguments by using “critical questions”, that is, questions to test the soundness of arguments [ 26 ]. Referring to the above-mentioned reasoning:

“This person is right about COVID-19 because they are a doctor.”

Taking into account the above-introduced knowledge about argument schemes, the main critical question to ask here is: “is Z indeed symptomatic of Y?”, that is, is being a doctor indeed a sign of knowing about all health conditions and, thus, always making factual health-related statements? The unreflected answer might be, “yes, of course”. However, the framework gets shaky by taking a closer look at the claim and the specific situation. First of all, doctors are experts about specific health conditions, not about all health conditions. Moreover, they might be right in diagnosing and treating cases that they have experience in, but not where they have no clinical experience and have not conducted research, which would hold for most doctors and COVID-19. Moreover, experience is often contextualized in a specific setting. However, for generalizations regarding, for instance, the country-specific COVID-19 clinical situation, they have to rely on national data and conduct sophisticated research that goes beyond their personal opinions. Certain aspects about COVID-19 are not within the domain of general practitioners but rather lie within the field of epidemiologists, virologists, public health experts, and health economics experts. Being a medical doctor does not directly qualify to hold expertise in other areas, even if significant overlaps exist between different health-related fields. Thus, the “authority-oriented” perspective for the argument is weak when the speaker might not have any absolute authority, knowledge, or experience in what they claim.

Concerning the second example:

Here, there are different critical questions to ask. The first question relates to the grounds for claiming that “vaccines in the past were shown to be dangerous”. Is this true? What does the evidence say and prove? Further, another important question is, “what does it mean to say that a vaccine is dangerous”? Related to these questions, the list of other questions includes: does the vaccine have some side effects like any other drug? Does it have more side effects? Have these effects been proven through rigorous scientific studies? Moreover, provided that some vaccines produced side effects in the past: Is the COVID-19 vaccine comparable to them? In other words, going back to the previous argument schemes: is Z (the COVID-19 vaccine) really equivalent to X (the other vaccines)? Is X (the other vaccines) really Y (dangerous)?

Overall, arguments from analogies always work by claiming comparisons. It is, thus, essential to verify the nature of the comparison itself. In particular, whether there is a relation/correspondence between two things and, if so, in which way.

“Some people contracted COVID-19 because they were exposed to 5G radiowaves.”

The main critical question is: “does Z indeed lead to Y?”, that is: does exposure to 5G lead to COVID-19? There is no scientific evidence that supports any link between the two as such. Thus, the argument is unsound, as the proposed cause of something is unproven. This is a typical pitfall of arguments implying that “something has the inevitable result”, that “something causes something”, and that “something always occurs when …”. The foundation of these general claims has to be carefully reviewed, as making faulty causal links between events indicates flawed critical thinking, which can lead to dangerous health decision-making.

4. Discussion

This paper contributes to the field of critical health literacy. It proposes specific topics from argumentation theory that could inform the operationalization of critical health literacy and form a basis for interventions aiming at strengthening individuals’ skills in this context. This study argues that a promising way to empower people in evaluating health information is to enhance their skills in the recognition, analysis, and evaluation of arguments. Specifically, it supports the need for people:

• (1) to recognize when health information is argumentative, that is, when the speaker presents a claim that they want the audience to accept, believe, or act upon;
• (2) to identify whether reasons support claims, and if so, which argument scheme they implement (that is, schemes based on symptomatic relations, analogy, or causality);
• (3) to ask the main critical questions to look for evidence behind the proposed reasons that can support or deny the claims’ validity (and acceptance).

These insights stemming from argumentation theory can contribute to advancing research on critical health literacy and align with existing findings in these contexts. An individual’s ability to recognize arguments and distortions in information has indeed been identified as one of the central components of critical health literacy in a recent review aiming to operationalize the concept [ 10 ]. Always keeping in mind that critical appraisal of information is complex and also involves a variety of competencies, skills, and abilities in other contexts (e.g., the ability to recognize biases in one’s thinking), this analysis based on argumentation theory provides us with concrete examples of what these distortions could look like and how to identify them. This makes our contribution a precious addition for the conceptualization and operationalization of critical health literacy. Despite its mainstream relevance in today’s information landscape, research in this domain is still in its infancy [ 12 ].

Moreover, some main considerations are needed when thinking about the applicability of our proposed approach. First, we are very well aware that argumentation theory is a technical discipline. Experts in argument analysis and evaluation need years of study to evaluate the quality of information. While we do not expect (because this would be unrealistic) that people become experts in argumentation theory, working on these aspects is a way to implement the classical tradition of “critical thinking”. Developing competencies in argumentation theory strengthens individuals as critical thinkers. Indeed, Siegel explains, “a critical thinker is a thinker who can assess claims and make judgments based on reasons, and who understands and conforms to principles governing the evaluation of the force of these arguments” [ 27 ]. Basing education and training initiatives on argumentation theory prepares individuals to become more competent in those abilities that are necessary for successful decision-making [ 28 , 29 , 30 ]. This is a way to encourage individuals to look for evidence and to ask the right questions to scrutinize claims, points of view, or what is presented as evidence.

Thus, our broader aim here is to call for concrete and specific initiatives to empower individuals in information appraisal. This is rather urgent, and there is a whole tradition of theories, models, and tools that can assist in doing this. It is a matter of thinking how to implement the study of critical thinking and argumentation theory in education and training programs, with a focus on the provisions of criteria and standards to assess the quality of information. Of course, expressing one’s opinion is a fundamental right, but the ability to evaluate information should be seen as essential to avoid suboptimal decision-making.

Second, health institutions can play a significant role in reinforcing critical health literacy. For decades, health promotion and disease prevention have been driven by an approach of telling people what is good/bad for their health (for instance, “eating fruits and vegetables is good” and “smoking is bad”) instead of empowering them to deal with the concurring information that stands out from the informational mainstream but might be more appealing, as it offers easier, less strenuous, or more rewarding alternatives. The pitfalls of this one-sided approach have become evident during the pandemic. The global COVID-19 health crisis has shown that this type of top-down approach to health styles sometimes has little impact on people. People are exposed to so much health information from different traditional and alternative sources that, as we argue, empowering critical thinking skills provides the best guidance. By following this approach, the World Health Organization is already actively working to empower governments and institutions to manage infodemics, including informational overload and dis-/misinformation [ 8 ]. Building critical health literacy and providing science education plays a significant role in this framework.

Third, this paper points to the benefits of efforts that target the educational system. Disciplines such as epistemology, philosophy of science, critical thinking, and scientific thinking can inform educational programs in different settings and different levels of education. Thus, for instance, school-based programs could entail specific sections that lay the foundations of scientific thinking and health information quality. A primary focus should be on what evidence is, how it differs from opinions, and the difference between causality and correlation. Similarly, patient education programs, instead of focusing on information provision, could be based on argumentation theory, so to provide patients with critical thinking skills that are useful in making informed decisions concerning their health.

At this stage, we also like to acknowledge one important arising limitation. This paper is conceptual. More work on the presentation of best practices of education and training is needed. Additionally, this paper focuses on argumentation theory. It should be complemented by work focusing on the so-called biases and heuristics well-developed in the cognitive sciences [ 31 ]. While we claim that the ability to evaluate health information would be an asset for individuals’ decision-making, we also have to acknowledge that this ability can be negatively impacted by the use of heuristics in critical thinking. Thus, for instance, people may evaluate information wrongly because they have a bias. For a discussion on the role of heuristics in critical thinking, we refer to a previous publication [ 32 ]. On the link between argumentation skills and heuristics, we plan to conduct further research.

5. Conclusions

This paper contributes to the operationalization of what critical health literacy entails by looking at the structure and soundness of arguments. Indeed, since false and unsupported claims in health information might pose a risk to individuals’ health, it is fundamental to equip them with the necessary means to assess the credibility and correctness of the claims that confront them. As a well-developed field of research, argumentation theory proposes several concepts and tools to assist with these challenges. Moreover, some of argumentation theory’s main aspects are the basis of current handbooks and courses in critical thinking that have entire sections dedicated to evaluating arguments. The development of argumentation skills requires knowledge and intensive training, which might be an implementational impediment on a larger scale, e.g., for whole societal groups or communities. Yet, some main concepts could inform educational interventions within public health frameworks and help disseminate a general understanding of good versus bad instances of argumentation. As a significant part of information nowadays has a persuasive nature, guiding the public understanding of argumentation and its principles is a major step toward consolidating critical literacy skills. In an information society, where freedom of speech is a crucial value, providing some normative guidance to individuals is a vital step towards empowering a free and reasonable choice about what to believe or not. Francis Bacon once said: “read not to contradict and confute; nor to believe and take for granted… but to weigh and consider.” [ 33 ] An argumentation theory-based education and training can help to achieve this goal.

Author Contributions

Conceptualization, S.R.; Methodology, S.R., N.D.; Formal Analysis, S.R., A.O., C.Z., M.F., N.D.; Original Draft Preparation, S.R.; Review and Editing, S.R., A.O., C.Z., M.F., N.D.; Supervision, S.R.; Funding Acquisition, S.R., N.D. All authors have read and agreed to the published version of the manuscript.

The work presented in this paper has been funded by a grant awarded to Sara Rubinelli and Nicola Diviani by the Swiss National Science Foundation ( www.snf.ch ; Grant No. 31CA30_196736), within the special call on Corona Virus. The funding source had no role in the conceptualization of the study, decision to publish, or preparation of the manuscript.

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