reading for critical thinking

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Critical Reading and Reading Strategy

What is critical reading.

Reading critically does not, necessarily, mean being critical of what you read.

Both reading and thinking critically don’t mean being ‘ critical ’ about some idea, argument, or piece of writing - claiming that it is somehow faulty or flawed.

Critical reading means engaging in what you read by asking yourself questions such as, ‘ what is the author trying to say? ’ or ‘ what is the main argument being presented? ’

Critical reading involves presenting a reasoned argument that evaluates and analyses what you have read.  Being critical, therefore - in an academic sense - means advancing your understanding , not dismissing and therefore closing off learning.

See also: Listening Types to learn about the importance of critical listening skills.

To read critically is to exercise your judgement about what you are reading – that is, not taking anything you read at face value.

When reading academic material you will be faced with the author’s interpretation and opinion.  Different authors will, naturally, have different slants. You should always examine what you are reading critically and look for limitations, omissions, inconsistencies, oversights and arguments against what you are reading.

In academic circles, whilst you are a student, you will be expected to understand different viewpoints and make your own judgements based on what you have read.

Critical reading goes further than just being satisfied with what a text says, it also involves reflecting on what the text describes, and analysing what the text actually means, in the context of your studies.

As a critical reader you should reflect on:

• What the text says:  after critically reading a piece you should be able to take notes, paraphrasing - in your own words - the key points.
• What the text describes: you should be confident that you have understood the text sufficiently to be able to use your own examples and compare and contrast with other writing on the subject in hand.
• Interpretation of the text: this means that you should be able to fully analyse the text and state a meaning for the text as a whole.

Critical reading means being able to reflect on what a text says, what it describes and what it means by scrutinising the style and structure of the writing, the language used as well as the content.

Critical Thinking is an Extension of Critical Reading

Thinking critically, in the academic sense, involves being open-minded - using judgement and discipline to process what you are learning about without letting your personal bias or opinion detract from the arguments.

Critical thinking involves being rational and aware of your own feelings on the subject – being able to reorganise your thoughts, prior knowledge and understanding to accommodate new ideas or viewpoints.

Critical reading and critical thinking are therefore the very foundations of true learning and personal development.

See our page: Critical Thinking for more.

Developing a Reading Strategy

You will, in formal learning situations, be required to read and critically think about a lot of information from different sources. 

It is important therefore, that you not only learn to read critically but also efficiently.

The first step to efficient reading is to become selective.

If you cannot read all of the books on a recommended reading list, you need to find a way of selecting the best texts for you. To start with, you need to know what you are looking for.  You can then examine the contents page and/or index of a book or journal to ascertain whether a chapter or article is worth pursuing further.

Once you have selected a suitable piece the next step is to speed-read.

Speed reading is also often referred to as skim-reading or scanning.  Once you have identified a relevant piece of text, like a chapter in a book, you should scan the first few sentences of each paragraph to gain an overall impression of subject areas it covers.  Scan-reading essentially means that you know what you are looking for, you identify the chapters or sections most relevant to you and ignore the rest.

When you speed-read you are not aiming to gain a full understanding of the arguments or topics raised in the text.  It is simply a way of determining what the text is about. 

When you find a relevant or interesting section you will need to slow your reading speed dramatically, allowing you to gain a more in-depth understanding of the arguments raised.  Even when you slow your reading down it may well be necessary to read passages several times to gain a full understanding.

See also: Speed-Reading for Professionals .

Following SQ3R

SQ3R is a well-known strategy for reading. SQ3R can be applied to a whole range of reading purposes as it is flexible and takes into account the need to change reading speeds.

SQ3R is an acronym and stands for:

This relates to speed-reading, scanning and skimming the text.  At this initial stage you will be attempting to gain the general gist of the material in question.

It is important that, before you begin to read, you have a question or set of questions that will guide you - why am I reading this?  When you have a purpose to your reading you want to learn and retain certain information.  Having questions changes reading from a passive to an active pursuit.  Examples of possible questions include:

• What do I already know about this subject?
• How does this chapter relate to the assignment question?
• How can I relate what I read to my own experiences?

Now you will be ready for the main activity of reading.  This involves careful consideration of the meaning of what the author is trying to convey and involves being critical as well as active.

Regardless of how interesting an article or chapter is, unless you make a concerted effort to recall what you have just read, you will forget a lot of the important points.  Recalling from time to time allows you to focus upon the main points – which in turn aids concentration. Recalling gives you the chance to think about and assimilate what you have just read, keeping you active.  A significant element in being active is to write down, in your own words, the key points. 

The final step is to review the material that you have recalled in your notes.  Did you understand the main principles of the argument?  Did you identify all the main points?  Are there any gaps?   Do not take for granted that you have recalled everything you need correctly – review the text again to make sure and clarify.

Continue to: Effective Reading Critical Thinking

See also: Critical Analysis Writing a Dissertation Critical Thinking and Fake News

Reading & Writing Purposes

Introduction: critical thinking, reading, & writing, critical thinking.

The phrase “critical thinking” is often misunderstood. “Critical” in this case does not mean finding fault with an action or idea. Instead, it refers to the ability to understand an action or idea through reasoning. According to the website SkillsYouNeed [1]:

Critical thinking might be described as the ability to engage in reflective and independent thinking.

In essence, critical thinking requires you to use your ability to reason. It is about being an active learner rather than a passive recipient of information.

Critical thinkers rigorously question ideas and assumptions rather than accepting them at face value. They will always seek to determine whether the ideas, arguments, and findings represent the entire picture and are open to finding that they do not.

Critical thinkers will identify, analyze, and solve problems systematically rather than by intuition or instinct.

Someone with critical thinking skills can:

• Understand the links between ideas.
• Determine the importance and relevance of arguments and ideas.
• Recognize, build, and appraise arguments.
• Identify inconsistencies and errors in reasoning.
• Approach problems in a consistent and systematic way.
• Reflect on the justification of their own assumptions, beliefs and values.

Read more at:  https://www.skillsyouneed.com/learn/critical-thinking.html

Critical thinking—the ability to develop your own insights and meaning—is a basic college learning goal. Critical reading and writing strategies foster critical thinking, and critical thinking underlies critical reading and writing.

Critical Reading

Critical reading builds on the basic reading skills expected for college.

College Readers’ Characteristics

• College readers are willing to spend time reflecting on the ideas presented in their reading assignments. They know the time is well-spent to enhance their understanding.
• College readers are able to raise questions while reading. They evaluate and solve problems rather than merely compile a set of facts to be memorized.
• College readers can think logically. They are fact-oriented and can review the facts dispassionately. They base their judgments on ideas and evidence.
• College readers can recognize error in thought and persuasion as well as recognize good arguments.
• College readers are skeptical. They understand that not everything in print is correct. They are diligent in seeking out the truth.

Critical Readers’ Characteristics

• Critical readers are open-minded. They seek alternative views and are open to new ideas that may not necessarily agree with their previous thoughts on a topic. They are willing to reassess their views when new or discordant evidence is introduced and evaluated.
• Critical readers are in touch with their own personal thoughts and ideas about a topic. Excited about learning, they are eager to express their thoughts and opinions.
• Critical readers are able to identify arguments and issues. They are able to ask penetrating and thought-provoking questions to evaluate ideas.
• Critical readers are creative. They see connections between topics and use knowledge from other disciplines to enhance their reading and learning experiences.
• Critical readers develop their own ideas on issues, based on careful analysis and response to others’ ideas.

The video below, although geared toward students studying for the SAT exam (Scholastic Aptitude Test used for many colleges’ admissions), offers a good, quick overview of the concept and practice of critical reading.

Critical Reading & Writing

College reading and writing assignments often ask you to react to, apply, analyze, and synthesize information. In other words, your own informed and reasoned ideas about a subject take on more importance than someone else’s ideas, since the purpose of college reading and writing is to think critically about information.

Critical thinking involves questioning. You ask and answer questions to pursue the “careful and exact evaluation and judgment” that the word “critical” invokes (definition from The American Heritage Dictionary ). The questions simply change depending on your critical purpose. Different critical purposes are detailed in the next pages of this text.

However, here’s a brief preview of the different types of questions you’ll ask and answer in relation to different critical reading and writing purposes.

When you react to a text you ask:

• “What do I think?” and
• “Why do I think this way?”

e.g., If I asked and answered these “reaction” questions about the topic assimilation of immigrants to the U.S. , I might create the following main idea statement, which I could then develop in an essay:  I think that assimilation has both positive and negative effects because, while it makes life easier within the dominant culture, it also implies that the original culture is of lesser value.

When you apply text information you ask:

• “How does this information relate to the real world?”

e.g., If I asked and answered this “application” question about the topic assimilation , I might create the following main idea statement, which I could then develop in an essay:  During the past ten years, a group of recent emigrants has assimilated into the local culture; the process of their assimilation followed certain specific stages.

When you analyze text information you ask:

• “What is the main idea?”
• “What do I want to ‘test’ in the text to see if the main idea is justified?” (supporting ideas, type of information, language), and
• “What pieces of the text relate to my ‘test?'”

e.g., If I asked and answered these “analysis” questions about the topic immigrants to the United States , I might create the following main idea statement, which I could then develop in an essay: Although Lee (2009) states that “segmented assimilation theory asserts that immigrant groups may assimilate into one of many social sectors available in American society, instead of restricting all immigrant groups to adapting into one uniform host society,” other theorists have shown this not to be the case with recent immigrants in certain geographic areas.

When you synthesize information from many texts you ask:

• “What information is similar and different in these texts?,” and
• “What pieces of information fit together to create or support a main idea?”

e.g., If I asked and answered these “synthesis” questions about the topic immigrants to the U.S. , I might create the following main idea statement, which I could then develop by using examples and information from many text articles as evidence to support my idea: Immigrants who came to the United States during the immigration waves in the early to mid 20th century traditionally learned English as the first step toward assimilation, a process that was supported by educators. Now, both immigrant groups and educators are more focused on cultural pluralism than assimilation, as can be seen in educators’ support of bilingual education. However, although bilingual education heightens the child’s reasoning and ability to learn, it may ultimately hinder the child’s sense of security within the dominant culture if that culture does not value cultural pluralism as a whole.

Critical reading involves asking and answering these types of questions in order to find out how the information “works” as opposed to just accepting and presenting the information that you read in a text. Critical writing involves recording your insights into these questions and offering your own interpretation of a concept or issue, based on the meaning you create from those insights.

• Crtical Thinking, Reading, & Writing. Authored by : Susan Oaks, includes material adapted from TheSkillsYouNeed and Reading 100; attributions below. Project : Introduction to College Reading & Writing. License : CC BY-NC: Attribution-NonCommercial
• Critical Thinking. Provided by : TheSkillsYouNeed. Located at : https://www.skillsyouneed.com/ . License : Public Domain: No Known Copyright . License Terms : Quoted from website: The use of material found at skillsyouneed.com is free provided that copyright is acknowledged and a reference or link is included to the page/s where the information was found. Read more at: https://www.skillsyouneed.com/
• The Reading Process. Authored by : Scottsdale Community College Reading Faculty. Provided by : Maricopa Community College. Located at : https://learn.maricopa.edu/courses/904536/files/32966438?module_item_id=7198326 . Project : Reading 100. License : CC BY: Attribution
• image of person thinking with light bulbs saying -idea- around her head. Authored by : Gerd Altmann. Provided by : Pixabay. Located at : https://pixabay.com/photos/light-bulb-idea-think-education-3704027/ . License : CC0: No Rights Reserved
• video What is Critical Reading? SAT Critical Reading Bootcamp #4. Provided by : Reason Prep. Located at : https://www.youtube.com/watch?v=5Hc3hmwnymw . License : Other . License Terms : YouTube video
• image of man smiling and holding a lightbulb. Authored by : africaniscool. Provided by : Pixabay. Located at : https://pixabay.com/photos/man-african-laughing-idea-319282/ . License : CC0: No Rights Reserved

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Interrogating Texts

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Rogier van der Weyden, 1399 -1464. Altarpiece fragment, Mary Magdalene reading. National Gallery (Great Britain). Available through   ArtSTOR

Workshop of Rogier van der Weyden. St. Ivo reading, ca.1450. National Gallery (Great Britain). Available through   ArtSTOR

Max Beckmann (1884-1950). Reclining Woman Reading, with Irises (192 3). Oil on canvas. Private collection. Image available in  HOLLIS

H onore  Daumier (1808-1879). Reader (1863). Oil on wood.  University of California, San Diego.  Image available in  ARTStor

Young Man Reading a Book (c.1570-1574). Attributed to Mirza 'Ali (c.1510-1576). Ink, opaque watercolor and gold on paper. Aga Khan Museum, Toronto, Ontario, Canada. Image available in HOLLIS

Ms. Richardson 5, fol. 66v Book of Hours, England, ca. 1420. Houghton Library. Image linked from HOLLIS

Thinking-Intensive Reading

Critical reading--active engagement and interaction with texts--is essential to your academic success at Harvard, and to your intellectual growth.  Research has shown that students who read deliberately retain more information and retain it longer.

Your college reading assignments will probably be more substantial and more sophisticated than those you are used to from high school. The amount of reading will almost certainly be greater.  College students rarely have the luxury of successive re-readings of material, however, given the pace of life in and out of the classroom. 

So how should you approach reading in this new environment?

While the strategies described below are (for the sake of clarity) listed sequentially, you typically do most of them simultaneously. If you're used to doing little more than moving your eyes across the page, they may feel awkward at first, and you may have to deploy them consciously.  But

But as they become habits, you'll notice the differences -- both in what you “see” in a course reading, and in the confidence with which you approach your texts.

Look “around” the text before you start reading. 

Previewing enables you to develop a set of expectations about the scope and aim of the text.  These very preliminary impressions offer you a way to focus your reading. 

You’ve probably engaged in one version of previewing in the past, when you’ve tried to determine how long an assigned reading is (and how much time and energy, as a result, it will demand from you).  But you can learn a great deal more about the organization and purpose of a text by taking note of features other than its length. For instance:

• What does the presence of headnotes , an  abstrac t, or other  prefatory materia l  tell you?
• Is the author known to you already?  If so, how does their  reputation   or  credentials (like an institutional affiliation)   influence your perception of what you are about to read?

If an author is unfamiliar or unknown in an essay collection, does an editor introduce them (by supplying brief biographical information, an assessment of the author’s work, concerns, and importance)?

Texts demand different things of you as you read, so whenever you can, register the type of information you’re presented with. 

• How does the disposition or  layout of a text  prepare you for reading? Is the material broken into parts--subtopics, sections, or the like?  Are there long and unbroken blocks of text or smaller paragraphs or “chunks” and what does this suggest?  How might the identified parts of a text guide you toward understanding the line of inquiry or the arc of the argument that's being made?
• Does the text seem to be arranged according to certain conventions of discourse ? Newspaper articles, for instance, have characteristics that you will recognize, including "easy" language. Textbooks and scholarly essays are organized quite differently. 

2. Annotate

Annotating puts you actively and immediately in a "dialogue” with an author and the issues and ideas you encounter in a written text. .

It's also a way to have an ongoing conversation with yourself as you move through the text and to record what that encounter was like for you. Here's how to make your reading thinking-intensive from start to finish:

• Throw away your highlighter : Highlighting can seem like an active reading strategy, but it can actually distract from the business of learning and dilute your comprehension.  Those bright yellow lines you put on a printed page one day can seem strangely cryptic the next, unless you have a method for remembering why they were important to you at another moment in time.  Pen or pencil will allow you to do more to a text you have to wrestle with.  
• Mark up the margins of your text with words and phrases : the   ideas that occur to you, notes about things that seem important to you, reminders of how issues in a text may connect with class discussion or course themes. This kind of interaction keeps you conscious of the reasons you are reading as well as the purposes your instructor has in mind. Later in the term, when you are reviewing for a test or project, your marginalia will be useful memory triggers.
• Develop your own symbol system : asterisk (*) a key idea, for example, or use an exclamation point (!) for the surprising, absurd, bizarre.  Your personalized set of hieroglyphs allow you to capture the important -- and often fleeting -- insights that occur to you as you're reading.  Like notes in your margins, they'll prove indispensable when you return to a text in search of that perfect passage to use in a paper, or when you are preparing for a big exam.  
• Get in the habit of hearing yourself ask questions: “What does this mean?” “Why is the writer drawing that conclusion?” “Why am I being asked to read this text?” etc. 

Write the questions down (in your margins, at the beginning or end of the reading, in a notebook, or elsewhere. They are reminders of the unfinished business you still have with a text: something to ask during class discussion, or to come to terms with on your own, once you’ve had a chance to digest the material further or have done other course reading.

3. Outline, Summarize, and Analyze

The best way to determine that you’ve really gotten the point is to be able to state it in your own words. take the information apart, look at its parts, and then, put it back together again in language that is meaningful to you. three ways to proceed: .

Outlining  the argument of a text is a version of annotating, and can be done quite informally in the margins of the text, unless you prefer the more formal Roman numeral model you may have learned in high school.  Outlining enables you to see the skeleton of an argument: the thesis, the first point and evidence (and so on), through the conclusion. With weighty or difficult readings, that skeleton may not be obvious until you go looking for it.

Summarizing  accomplishes something similar, but in sentence and paragraph form, and with the connections between ideas made explicit.

Analyzing  adds an evaluative component to the summarizing process—it requires you not just to restate main ideas, but also to test the logic, credibility, and emotional impact of an argument.  In analyzing a text, you reflect upon and decide how effectively (or poorly) its argument has been made.  Questions to ask:

• What is the writer asserting?
• What am I being asked to believe or accept? Facts? Opinions? Some mixture?
• What reasons or evidence does the author supply to convince me? Where is the strongest or most effective evidence the author offers  -- and why is it compelling?
• Is there any place in the text where the reasoning breaks down?  Are there things that do not make sense,  conclusions that are drawn prematurely, moments where the writer undermines their purposes?

4. Look for repetitions and patterns

The way language is chosen, used, and positioned in a text can be an important indication of what an author considers crucial and what they expect you to glean from their argument.  .

Language choices can also alert you to ideological positions, hidden agendas or biases.   Be watching for:

• Recurring images
• Repeated words, phrases, types of examples, or illustrations
• Consistent ways of characterizing people, events, or issues

5. Contextualize

Once you’ve finished reading actively and annotating it,   consider the text from the multiple perspectives..

When you contextualize, you essentially "re-view" a text you've encountered, acknowledging how it is framed by its historical, cultural, material, or intellectual circumstances. Do these factors change, complicate, explain, deepen or otherwise influence how you view a piece? 

Also view the reading through the lens of your own experience. Your understanding of the words on the page and their significance is always shaped by what you have come to know and value from living in a particular time and place.

6. Compare and Contrast

Set course readings against each other to determine their relationships (hidden or explicit)..

• At what point in the term does this reading come?  Why that point, do you imagine?
• How does it contribute to the main concepts and themes of the course? 
• How does it compare (or contrast) to the ideas presented by texts that come before it?  Does it continue a trend, shift direction, or expand the focus of previous readings?
• How has your thinking been altered by this reading, or how has it affected your response to the issues and themes of the course?

Susan Gilroy , Librarian for Undergraduate Writing Programs, Lamont Library 

PDF version

Interrogating texts [2 page printable]

• Last Updated: Aug 22, 2023 2:51 PM
• URL: https://guides.library.harvard.edu/sixreadinghabits

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Library Guides

Critical thinking and writing: critical reading.

• Critical Thinking
• Problem Solving

Critical Reading

• Critical Writing
• Presenting your Sources

To apply critical thinking when you read, try doing the following: 

1) Read the text carefully, asking questions.

2) Check the evidence used in the text, especially if the source is not peer-reviewed.  

3) Compare with other sources dealing with the same topic.

4) Evaluate and draw your own conclusions. 

1) Read Carefully and Question the Text

When you read critically you need to question and engage with the text. This takes time and requires deep reading. (You may firstly undertake an initial skimming/scanning of the text to check that it is useful before launching into critical reading, see Effective Reading ). 

In order to evaluate the source you are reading, you can ask the following questions: 

• Is it an academic source? Who are the authors? Are they authoritative? Could they be biased, and/or have an agenda?
• What is the argument / conclusion / message / opinion of the source?
• What is the evidence? Is it up to date? Are the methods appropriate? (See also the box below)
• Does the evidence support the argument? Is the text logical?
• Is there anything missing/omitted? Something else that should have been considered? 

"analysing the results"   by  Paul Keller  is licensed under  CC BY 2.0 

2) Check the Evidence

What is the evidence used by the source you are using? Facts, data, primary sources, other secondary sources? 

Check if the evidence is: 

• complete (as opposed to omitting/neglecting/overlooking anything)
• reported correctly (or has the evidence been interpreted, manipulated, or taken out of context)
• using appropriate methods

Remember that even quantitative evidence can be misleading. Statistics can be abused, presenting a partial perspective to bolster weak arguments.

This notion underlies the popular quip (attributed by Mark Twain to Benjamin Disraeli): " There are three kinds of lies: lies, damned lies, and statistics ."

3) Compare the Text with Other Sources

Literature on the same topic

In order to better evaluate a piece of work, you need to compare it with other sources dealing with the same topic(s). What do other authors say about the topic(s) discussed in the source you just read?  Expose yourself to different authors and perspectives. 

The more you read, the more likely you are to reach a sound judgment on the topic you are studying!

See also the guides on researching and  comparing and synthesising sources .

Literature commenting on the source you are reading

You can also check if there is some literature directly commenting on the text you read. Use Google Scholar for forward citation tracking (finding newest sources that cite a particular source) to help you find what other literature comments on a certain source. See the guide on using Google Scholar .

4) Evaluate and Use the Source

Once you have critically read the text, think of what conclusions you can draw from the points it makes. 

When you read for your assignment, keep in mind your purpose, that is, to retrieve information that you will analyse and discuss in your own writing. 

If something is relevant, make sure you take notes and record the reference. The reading will be part of your analysis  of the topic you are writing about, and may be reported in your final text, perhaps as a quote, paraphrase, summary or synthesis . 

If something is irrelevant, don't dwell on it! See also our guide on effective reading . 

Critical Reading Video

In the following video Doug Specht, Senior Lecturer at the Westminster School of Media and Communication, presents steps for critical reading:

• Locate the text in the discipline

Last Tips on Critical Reading

You can become a better critical thinker by keeping these points in mind:

• Be honest with yourself
• Resist manipulation
• Get involved in the academic debate
• Ask questions and challenge ideas
• Base judgments on evidence
• Be intellectually independent

• << Previous: Problem Solving
• Next: Critical Writing >>
• Last Updated: May 5, 2023 10:54 AM
• URL: https://libguides.westminster.ac.uk/critical-thinking-and-writing

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Reading Skills Part 1: Set Yourself Up for Success

"While - like many of us - I enjoy reading what I want to read, I still struggle to get through a dense research article or textbook chapter. I have noticed, however, that if I take steps to prepare, I am much more likely to persist through a challenging reading. "

Reading Skills Part 2: Alternatives to Highlighting

"It starts with the best of intentions: trusty highlighter in hand or (for the tech-savvy crowd) highlighting tool hovering on-screen, you work your way through an assigned reading, marking only the most important information—or so you think."

Reading Skills Part 3: Read to Remember

"It’s happened to the best of us: on Monday evening, you congratulate yourself on making it though an especially challenging reading. What a productive start to the week!"

Reading a Research Article Assigned as Coursework

"Reading skills are vital to your success at Walden. The kind of reading you do during your degree program will vary, but most of it will involve reading journal articles based on primary research."

Critical Reading for Evaluation

"Whereas analysis involves noticing, evaluation requires the reader to make a judgment about the text’s strengths and weaknesses. Many students are not confident in their ability to assess what they are reading."

Critical Reading for Analysis and Comparison

"Critical reading generally refers to reading in a scholarly context, with an eye toward identifying a text or author’s viewpoints, arguments, evidence, potential biases, and conclusions."

Pre-Reading Strategies

Triple entry notebook, critical thinking.

Use this checklist to practice critical thinking while reading an article, watching an advertisement, or making an important purchase or voting decision.

Critical Reading Checklist (Word) Critical Reading Checklist (PDF) Critical Thinking Bookmark (PDF)

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Critical Thinking

Developing the right mindset and skills.

By the Mind Tools Content Team

We make hundreds of decisions every day and, whether we realize it or not, we're all critical thinkers.

We use critical thinking each time we weigh up our options, prioritize our responsibilities, or think about the likely effects of our actions. It's a crucial skill that helps us to cut out misinformation and make wise decisions. The trouble is, we're not always very good at it!

In this article, we'll explore the key skills that you need to develop your critical thinking skills, and how to adopt a critical thinking mindset, so that you can make well-informed decisions.

What Is Critical Thinking?

Critical thinking is the discipline of rigorously and skillfully using information, experience, observation, and reasoning to guide your decisions, actions, and beliefs. You'll need to actively question every step of your thinking process to do it well.

Collecting, analyzing and evaluating information is an important skill in life, and a highly valued asset in the workplace. People who score highly in critical thinking assessments are also rated by their managers as having good problem-solving skills, creativity, strong decision-making skills, and good overall performance. [1]

Key Critical Thinking Skills

Critical thinkers possess a set of key characteristics which help them to question information and their own thinking. Focus on the following areas to develop your critical thinking skills:

Being willing and able to explore alternative approaches and experimental ideas is crucial. Can you think through "what if" scenarios, create plausible options, and test out your theories? If not, you'll tend to write off ideas and options too soon, so you may miss the best answer to your situation.

To nurture your curiosity, stay up to date with facts and trends. You'll overlook important information if you allow yourself to become "blinkered," so always be open to new information.

But don't stop there! Look for opposing views or evidence to challenge your information, and seek clarification when things are unclear. This will help you to reassess your beliefs and make a well-informed decision later. Read our article, Opening Closed Minds , for more ways to stay receptive.

Logical Thinking

You must be skilled at reasoning and extending logic to come up with plausible options or outcomes.

It's also important to emphasize logic over emotion. Emotion can be motivating but it can also lead you to take hasty and unwise action, so control your emotions and be cautious in your judgments. Know when a conclusion is "fact" and when it is not. "Could-be-true" conclusions are based on assumptions and must be tested further. Read our article, Logical Fallacies , for help with this.

Use creative problem solving to balance cold logic. By thinking outside of the box you can identify new possible outcomes by using pieces of information that you already have.

Self-Awareness

Many of the decisions we make in life are subtly informed by our values and beliefs. These influences are called cognitive biases and it can be difficult to identify them in ourselves because they're often subconscious.

Practicing self-awareness will allow you to reflect on the beliefs you have and the choices you make. You'll then be better equipped to challenge your own thinking and make improved, unbiased decisions.

One particularly useful tool for critical thinking is the Ladder of Inference . It allows you to test and validate your thinking process, rather than jumping to poorly supported conclusions.

Developing a Critical Thinking Mindset

Combine the above skills with the right mindset so that you can make better decisions and adopt more effective courses of action. You can develop your critical thinking mindset by following this process:

Gather Information

First, collect data, opinions and facts on the issue that you need to solve. Draw on what you already know, and turn to new sources of information to help inform your understanding. Consider what gaps there are in your knowledge and seek to fill them. And look for information that challenges your assumptions and beliefs.

Be sure to verify the authority and authenticity of your sources. Not everything you read is true! Use this checklist to ensure that your information is valid:

• Are your information sources trustworthy ? (For example, well-respected authors, trusted colleagues or peers, recognized industry publications, websites, blogs, etc.)
• Is the information you have gathered up to date ?
• Has the information received any direct criticism ?
• Does the information have any errors or inaccuracies ?
• Is there any evidence to support or corroborate the information you have gathered?
• Is the information you have gathered subjective or biased in any way? (For example, is it based on opinion, rather than fact? Is any of the information you have gathered designed to promote a particular service or organization?)

If any information appears to be irrelevant or invalid, don't include it in your decision making. But don't omit information just because you disagree with it, or your final decision will be flawed and bias.

Now observe the information you have gathered, and interpret it. What are the key findings and main takeaways? What does the evidence point to? Start to build one or two possible arguments based on what you have found.

You'll need to look for the details within the mass of information, so use your powers of observation to identify any patterns or similarities. You can then analyze and extend these trends to make sensible predictions about the future.

To help you to sift through the multiple ideas and theories, it can be useful to group and order items according to their characteristics. From here, you can compare and contrast the different items. And once you've determined how similar or different things are from one another, Paired Comparison Analysis can help you to analyze them.

The final step involves challenging the information and rationalizing its arguments.

Apply the laws of reason (induction, deduction, analogy) to judge an argument and determine its merits. To do this, it's essential that you can determine the significance and validity of an argument to put it in the correct perspective. Take a look at our article, Rational Thinking , for more information about how to do this.

Once you have considered all of the arguments and options rationally, you can finally make an informed decision.

Afterward, take time to reflect on what you have learned and what you found challenging. Step back from the detail of your decision or problem, and look at the bigger picture. Record what you've learned from your observations and experience.

Critical thinking involves rigorously and skilfully using information, experience, observation, and reasoning to guide your decisions, actions and beliefs. It's a useful skill in the workplace and in life.

You'll need to be curious and creative to explore alternative possibilities, but rational to apply logic, and self-aware to identify when your beliefs could affect your decisions or actions.

You can demonstrate a high level of critical thinking by validating your information, analyzing its meaning, and finally evaluating the argument.

Critical Thinking Infographic

See Critical Thinking represented in our infographic: An Elementary Guide to Critical Thinking .

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2 – Critical Reading

“Citizens of modern societies must be good readers to be successful. Reading skills do not guarantee success for anyone, but success is much harder to come by without being a skilled reader. The advent of the computer and the Internet does nothing to change this fact about reading. If anything, electronic communication only increases the need for effective reading skills and strategies as we try to cope with the large quantities of information made available to us.”      –William Grabe

The importance of reading as a literacy skill is without a doubt. It is essential for daily life navigation and academic success. Reading for daily life navigation is relatively easier, compared to academic reading. Think about the kinds of reading you did in elementary and high school (e.g., story books, picture books, textbook chapters, literary works, online information, lecture notes, etc.).

Now think about what you were expected to do with your reading at school (e.g., memorize, summarize, discuss, pass a test, apply information, or write essays or papers).

Research shows that what you expect to do with a text affects how you read it.

–Bartholomae & Petrosky (1996)

So, reading is not always the same; you read school texts differently than the texts you choose outside of school tasks. Furthermore, there are many external and internal factors that influence how you interpret and use what you read. Much depends on your background (e.g., cultural participation in communities, identity, historical knowledge), and the context in which you are reading. Classrooms and teachers certainly have an influence. The teaching methods used by your instructor, the texts your instructor chooses, and expectations of student performance on assignments all affect how you read and what you do to accomplish an assignment.

Different levels of education also emphasize different types of reading. For example, in primary or secondary education, you learn what is known, so you focus on correctness, memorization of facts, and application of facts. In higher education, although you might still be required to understand and memorize information, you expand what is known by examining ideas and creating new knowledge. In those processes at different levels, reading has been used for different purposes.

Multilingual reading and writing expert William Grabe has identified six different purposes:

• Reading to search for information (scanning and skimming)
• Reading for quick understanding (skimming)
• Reading to learn
• Reading to integrate information
• Reading to evaluate, critique, and use information
• Reading for general comprehension (in many cases, reading for interest or reading to entertain)

In college, reading to evaluate, critique, and use information is the most practiced and tested skill. But what does it mean? Reading to evaluate, critique, and use information is related to critical reading.

Definition of Critical Reading

Critical reading is a more ACTIVE way of reading. It is a deeper and more complex engagement with a text. Critical reading is a process of analyzing, interpreting and, sometimes, evaluating. When we read critically, we use our critical thinking skills to QUESTION both the text and our own reading of it. Different disciplines may have distinctive modes of critical reading (scientific, philosophical, literary, etc).

[Source: Duncan , n.d., Critical Reading ]

Critical reading does not have to be all negative. The aim of critical reading is not to find fault but to assess the strength of the evidence and the argument. It is just as useful to conclude that a study, or an article, presents very strong evidence and a well-reasoned argument, as it is to identify the studies or articles that are weak.

[Source: What is critical reading? ]

There’s No Reason to Eat Animals by Lindsay Rajt

If we care about the environment and believe that kindness is a virtue-as we all say that we do–a vegan diet is the only sensible option. The question becomes: Why eat animals at all?

Animals are made of flesh, bone, and blood, just as you and I are. They form friendships, feel pain and joy, grieve for lost loved ones and are afraid to die. One cannot profess to care about animals while tearing them away from their friends and families and cutting their throats–or paying someone else to do it–simply to satisfy a fleeting taste for flesh.

[adapted from Pattison, 2015, Critical Reading: English for Academic Purposes for instructional purposes ]

What is your position on the issue?

Do you think that the language used helps the audience? How?

How does the language use affect your evaluation of the issue?

Obesity: A Public Health Failure? By Tavis Glassman PhD, MPH, MCHES, Jennifer Glassman M.A., CCC-SLP, and Aaron J. Diehr, M.A.

Obesity rates continue to increase, bringing into question the efficacy of prevention and treatment efforts. While intuitively appealing, the law on weight gain focusing on calories is too simplistic because calories represent only one factor on issues of weight management. From a historical perspective, the recommendation to eat a low fat, high carbohydrate diet may have been the wrong message to promote, thereby making the obesity situation worse. Suggestions to solve the issues of obesity include taxing, restricting advertising, and reducing the use of sugar. Communities must employ these and other strategies to decrease sugar use and reduce obesity rates.

How would you describe the authors’ educational background?

How does the authors’ background affect your evaluation of the argument?

Students Want More Mobile Devices in Classroom by Ellis Booker

Released last week, the Student Mobile Device Survey reveals that students almost unanimously believe mobile technology will change education and make learning more fun. The survey, which collected the responses of 2,350 US students, was conducted for learning company Pearson by Harris Interactive.

According to the survey, 92% of elementary, middle and high school students believe mobile devices will change the way students learn in the future and make learning more fun (90%). A majority (69%) would like to use mobile devices more in the classroom.

The survey results also contained some surprises. For example, college students in math and science are much more likely to use technology for learning, and researchers expected to see this same pattern in the lower grades.

Are you convinced by the survey results? Why?

Color Scheme Associations in Context

The colors you surround yourself with at work are also important as they make a difference in how you are perceived by members of the public. Traditional workplaces still use dark colors such as navy blue, forest green, and chocolate brown to give clients a sense of seriousness and professionalism.

Think about it: which accountant would you choose to prepare your tax return: the one whose office has navy blue drapes and lamps and a maritime scene on the wall or the one whose office is painted in hot pink with a cartoon character on the wall? An online survey of lawyers carried out by Legal Scene magazine showed that of 287 respondents, 38 percent chose a navy blue color scheme for their office; 32 percent chose brown; 19 percent chose forest green; 7 percent chose burgundy; and only 4 percent chose red, pink or orange (Perkins, 2013).

What kind of bias might be implicated in this survey?

What is your personal experience?

These practices do not ask you to memorize or summarize the information you read, but instead, they ask you to provide your opinions and judgment. To answer those questions, you need to engage in critical reading, a form of active reading.

Active reading, which predominates college-level reading, means reading with the purpose of getting a deeper understanding of the texts you are reading and being engaged in the actions of analyzing, questioning, and evaluating the texts. In other words, instead of accepting the information given to you, you challenge its value by examining the source of the information and the formation of an argument.

The difference in how you read falls into two broad categories:

(Source: Reading Critically ]

Reading critically and actively is essential for college students. But what does critical reading look like in actual practice? Here are the steps that you can follow to do the critical reading.

Step 1:  Understand the purpose of your reading and be selective

As college students, you are very busy with your daily coursework. A freshman usually takes four to five courses or even six courses per semester. This means you have tons of reading to do every week. Getting to know the purpose of the reading assignments can save you time as your reading is more targeted. Remember you do not have to read a whole chapter or book. What you can do is through scanning to determine the sections that are useful for you and then read the parts carefully.

Step 2:  Evaluate the reading text

While reading a text, you need to question/analyze/evaluate the text by considering the following:

• Assess whether a source is reliable (Read around the text for the title, author, publisher, publication date, good/bad examples, tones, etc.)
• Distinguish between facts and opinions (Scan for any evidence)
• Recognize multiple opinions in a text
• Infer meaning when it is not directly stated
• Agree or disagree with what you read
• Consider the relevance of the text to your task
• Consider what is missing from a text

It may well be necessary to read passages several times to gain a full understanding of texts and be able to evaluate the source. In this process, you can underline, highlight, or circle important parts and points, take notes, or add comments in the margins.

Critical reading often involves re-reading a text multiple times, putting our focus on different aspects of the text. The first time we read a text, we may be focused on getting an overall sense of the information the author is presenting – in other words, simply understanding what they are trying to say. On subsequent readings, however, we can focus on how the author presents that information, the kinds of evidence they provide to support their arguments (and how convincing we find that evidence), the connection between their evidence and their conclusions, etc.

[Source: Lane, 2021, Critical Thinking for Critical Writing ]

Step 3:  Document your reading and form your own argument

After you finish reading a text, sort out your notes and keep track of the sources you have read on the topic you are exploring. After you read several sources, you might be able to form your own argument(s) and use the sources as evidence for your argument(s).

In college, critical reading usually leads to critical writing.

Critical writing comes from critical reading. Whenever you have to write a paper, you have to reflect on various written texts, think and interpret research that has previously been carried out on your subject. With the aim of writing your independent analysis of the subject, you have to critically read sources and use them suitably to formulate your argument. The interpretations and conclusions you derive from the literature you read are the stepping stones towards devising your own approach.

[Source: Does Critical Reading Influence Academic Writing? ]

In a word, through critical reading, you form your own argument(s), and the evidence used to support your argument(s) is usually from the texts that you read critically. The Source Essay Writing Service explains how critical reading influences academic writing.

How does critical reading influence your writing skills?

Once you start reading texts critically, you develop an understanding of how to write research papers. Here are some practical tips that will help you in academic writing:

• Examine introductions and conclusions of the texts while critical reading so when you write an independent content, you would be able to decide how to focus your critical work.
• When you highlight or take notes from a text, make sure you focus on the argument. The way the author explains the analytical progress, the concepts used, and arriving at conclusions will help you to write your own facts and examples in an interesting way.
• By closely reading the texts, you will be able to look for the patterns that give meaning, purpose, and consistency to the text. The way the arguments are presented in paragraphs will aid you in structuring information in your writing.
• When you critically read a text, you are able to learn how an argument is placed in the text. Try to understand how you can use this placement strategy in academic writing. Paying attention to the context is an important aspect that you learn from critical reading.
• While reading a text, you will notice that the author has given the due credit to the sources used or the references that were consulted. This will help you in understanding how you can cite sources and quotes in your content.
• Critical reading skills enhance your way of thinking and writing skills. The more you read, the better is your knowledge and vocabulary. It is important to use the precise words to express your meaning. You can learn new words and improve your writing by reading as many texts as you can.

Activity 1: Discuss the following questions with your group

• A website from the United Nations Educational, Scientific ad Cultural Organization (UNESCO) gives some statistics about the level of education reached by young women in Indonesia. Is this a reliable source?
• You find an interesting article about addiction to online gambling. The article has some interesting statistics, but it was published ten years ago. Is it worth using?
• You find a book about World War II that presents a different opinion from your other sources. What would you like to know about the author before you decide whether or not to take him seriously?
• An article tells you that research into space exploration is a waste of money. Do you think this article is presenting facts or opinions? How can you tell? What might you look for in the article?
• You find some research that states that people who own dogs generally live longer lives than those who do not. The author has some convincing arguments, but you are not sure whether or not she has enough evidence. How mush is enough?
• A newspaper article tells you about human rights abuses in a certain country. The writer of this article has never visited the country in question; his claims are based on interviews with other people. How would you evaluate his information?
• You find two websites about the use of seaweed as a source of energy. One is full of long words and complicated sentences; the other uses simple, clear language. Is the first one a more reliable source?
• You have read nine different articles that tell you that there is no connection between wealth and happiness. The tenth article gives the opposite opinion: rich people are happier than those who are poor. What questions would you ask yourself about this article before you decide whether or not to consider it?

Activity 2: Reading for analyzing styles

Please read the news and discuss the importance of the graphs in supporting the arguments of the text.

Gender Pay Gap in U.S. Held Steady in 2020

By amanda barroso and anna brown.

The gender gap in pay has remained relatively stable in the United States over the past 15 years or so. In 2020, women earned 84% of what men earned, according to a Pew Research Center analysis of median hourly earnings of both full- and part-time workers. Based on this estimate, it would take an extra 42 days of work for women to earn what men did in 2020.

As has been the case in recent decades, the 2020 wage gap was smaller for workers ages 25 to 34 than for all workers 16 and older. Women ages 25 to 34 earned 93 cents for every dollar a man in the same age group earned on average. In 1980, women ages 25 to 34 earned 33 cents less than their male counterparts, compared with 7 cents in 2020. The estimated 16-cent gender pay gap among all workers in 2020 was down from 36 cents in 1980.

The U.S. Census Bureau has also analyzed the gender pay gap, though its analysis looks only at full-time workers (as opposed to full- and part-time workers). In 2019, full-time, year-round working women earned 82% of what their male counterparts earned, according to the Census Bureau’s most recent analysis.

Why does a gender pay gap still persist?

Much of this gap has been explained by measurable factors such as educational attainment, occupational segregation and work experience. The narrowing of the gap is attributable in large part to gains women have made in each of these dimensions.

Even though women have increased their presence in higher-paying jobs traditionally dominated by men, such as professional and managerial positions, women as a whole continue to be over-represented in lower-paying occupations relative to their share of the workforce. This may contribute to gender differences in pay.

Other factors that are difficult to measure, including gender discrimination, may also contribute to the ongoing wage discrepancy. In a 2017 Pew Research Center survey , about four-in-ten working women (42%) said they had experienced gender discrimination at work, compared with about two-in-ten men (22%). One of the most commonly reported forms of discrimination focused on earnings inequality. One-in-four employed women said they had earned less than a man who was doing the same job; just 5% of men said they had earned less than a woman doing the same job.

Motherhood can also lead to interruptions in women’s career paths and have an impact on long-term earnings. Our 2016 survey of workers who had taken parental, family or medical leave in the two years prior to the survey found that mothers typically take more time off than fathers after birth or adoption. The median length of leave among mothers after the birth or adoption of their child was 11 weeks, compared with one week for fathers. About half (47%) of mothers who took time off from work in the two years after birth or adoption took off 12 weeks or more.

Mothers were also nearly twice as likely as fathers to say taking time off had a negative impact on their job or career. Among those who took leave from work in the two years following the birth or adoption of their child, 25% of women said this had a negative impact at work, compared with 13% of men.

[Source: https://www.pewresearch.org/fact-tank/2021/05/25/gender-pay-gap-facts/ ]

Activity 3: Reading for arguments

What’s the main argument of the poem?

Fire and Ice

By robert frost, some say the world will end in fire, some say in ice. from what i’ve tasted of desire i hold with those who favor fire. but if it had to perish twice, i think i know enough of hate to say that for destruction ice is also great and would suffice..

References:

Barroso, A., & Brown, A. (2021, May 25). Gender pay gap in U.S. held steady in 2020. Pew Research Center. Retrieved July 22, 2022, from https://www.pewresearch.org/fact-tank/2021/05/25/gender-pay-gap-facts/

Bartholomae, D., Petrosky, T., & Waite, S. (2002). Ways of reading: An anthology for writers (p. 720). Bedford/St. Martin’s.

Duncan, J. (n.d.). The Writing Centre, University of Toronto Scarborough. Modified by Michael O’Connor. https://www.stetson.edu/other/writing-program/media/CRITICAL%20READING.pdf

Grabe, W. (2008). Reading in a second language: Moving from theory to practice. Cambridge University Press.

Lane, J. (2021, July 9). Critical thinking for critical writing. Simon Fraser University. Retrieved July 22, 2022, from https://www.lib.sfu.ca/about/branches-depts/slc/writing/argumentation/critical-thinking-writing

Pattison, T. (2015). Critical Reading: English for academic purposes for instructional purposes. Pearson.

Sourceessay. (n.d.). What is critical reading. https://sourceessay.com/does-critical-reading-influence-academic-writing/

University of Leicester. (n.d.). What is critical reading? Bangor University. https://www.bangor.ac.uk/studyskills/study-guides/critical-reading.php.en

Critical Reading, Writing, and Thinking Copyright © 2022 by Zhenjie Weng, Josh Burlile, Karen Macbeth is licensed under a Creative Commons Attribution 4.0 International License , except where otherwise noted.

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Critical Thinking

Critical thinking is a widely accepted educational goal. Its definition is contested, but the competing definitions can be understood as differing conceptions of the same basic concept: careful thinking directed to a goal. Conceptions differ with respect to the scope of such thinking, the type of goal, the criteria and norms for thinking carefully, and the thinking components on which they focus. Its adoption as an educational goal has been recommended on the basis of respect for students’ autonomy and preparing students for success in life and for democratic citizenship. “Critical thinkers” have the dispositions and abilities that lead them to think critically when appropriate. The abilities can be identified directly; the dispositions indirectly, by considering what factors contribute to or impede exercise of the abilities. Standardized tests have been developed to assess the degree to which a person possesses such dispositions and abilities. Educational intervention has been shown experimentally to improve them, particularly when it includes dialogue, anchored instruction, and mentoring. Controversies have arisen over the generalizability of critical thinking across domains, over alleged bias in critical thinking theories and instruction, and over the relationship of critical thinking to other types of thinking.

2.1 Dewey’s Three Main Examples

2.2 dewey’s other examples, 2.3 further examples, 2.4 non-examples, 3. the definition of critical thinking, 4. its value, 5. the process of thinking critically, 6. components of the process, 7. contributory dispositions and abilities, 8.1 initiating dispositions, 8.2 internal dispositions, 9. critical thinking abilities, 10. required knowledge, 11. educational methods, 12.1 the generalizability of critical thinking, 12.2 bias in critical thinking theory and pedagogy, 12.3 relationship of critical thinking to other types of thinking, other internet resources, related entries.

Use of the term ‘critical thinking’ to describe an educational goal goes back to the American philosopher John Dewey (1910), who more commonly called it ‘reflective thinking’. He defined it as

active, persistent and careful consideration of any belief or supposed form of knowledge in the light of the grounds that support it, and the further conclusions to which it tends. (Dewey 1910: 6; 1933: 9)

and identified a habit of such consideration with a scientific attitude of mind. His lengthy quotations of Francis Bacon, John Locke, and John Stuart Mill indicate that he was not the first person to propose development of a scientific attitude of mind as an educational goal.

In the 1930s, many of the schools that participated in the Eight-Year Study of the Progressive Education Association (Aikin 1942) adopted critical thinking as an educational goal, for whose achievement the study’s Evaluation Staff developed tests (Smith, Tyler, & Evaluation Staff 1942). Glaser (1941) showed experimentally that it was possible to improve the critical thinking of high school students. Bloom’s influential taxonomy of cognitive educational objectives (Bloom et al. 1956) incorporated critical thinking abilities. Ennis (1962) proposed 12 aspects of critical thinking as a basis for research on the teaching and evaluation of critical thinking ability.

Since 1980, an annual international conference in California on critical thinking and educational reform has attracted tens of thousands of educators from all levels of education and from many parts of the world. Also since 1980, the state university system in California has required all undergraduate students to take a critical thinking course. Since 1983, the Association for Informal Logic and Critical Thinking has sponsored sessions in conjunction with the divisional meetings of the American Philosophical Association (APA). In 1987, the APA’s Committee on Pre-College Philosophy commissioned a consensus statement on critical thinking for purposes of educational assessment and instruction (Facione 1990a). Researchers have developed standardized tests of critical thinking abilities and dispositions; for details, see the Supplement on Assessment . Educational jurisdictions around the world now include critical thinking in guidelines for curriculum and assessment.

For details on this history, see the Supplement on History .

2. Examples and Non-Examples

Before considering the definition of critical thinking, it will be helpful to have in mind some examples of critical thinking, as well as some examples of kinds of thinking that would apparently not count as critical thinking.

Dewey (1910: 68–71; 1933: 91–94) takes as paradigms of reflective thinking three class papers of students in which they describe their thinking. The examples range from the everyday to the scientific.

Transit : “The other day, when I was down town on 16th Street, a clock caught my eye. I saw that the hands pointed to 12:20. This suggested that I had an engagement at 124th Street, at one o’clock. I reasoned that as it had taken me an hour to come down on a surface car, I should probably be twenty minutes late if I returned the same way. I might save twenty minutes by a subway express. But was there a station near? If not, I might lose more than twenty minutes in looking for one. Then I thought of the elevated, and I saw there was such a line within two blocks. But where was the station? If it were several blocks above or below the street I was on, I should lose time instead of gaining it. My mind went back to the subway express as quicker than the elevated; furthermore, I remembered that it went nearer than the elevated to the part of 124th Street I wished to reach, so that time would be saved at the end of the journey. I concluded in favor of the subway, and reached my destination by one o’clock.” (Dewey 1910: 68–69; 1933: 91–92)

Ferryboat : “Projecting nearly horizontally from the upper deck of the ferryboat on which I daily cross the river is a long white pole, having a gilded ball at its tip. It suggested a flagpole when I first saw it; its color, shape, and gilded ball agreed with this idea, and these reasons seemed to justify me in this belief. But soon difficulties presented themselves. The pole was nearly horizontal, an unusual position for a flagpole; in the next place, there was no pulley, ring, or cord by which to attach a flag; finally, there were elsewhere on the boat two vertical staffs from which flags were occasionally flown. It seemed probable that the pole was not there for flag-flying.

“I then tried to imagine all possible purposes of the pole, and to consider for which of these it was best suited: (a) Possibly it was an ornament. But as all the ferryboats and even the tugboats carried poles, this hypothesis was rejected. (b) Possibly it was the terminal of a wireless telegraph. But the same considerations made this improbable. Besides, the more natural place for such a terminal would be the highest part of the boat, on top of the pilot house. (c) Its purpose might be to point out the direction in which the boat is moving.

“In support of this conclusion, I discovered that the pole was lower than the pilot house, so that the steersman could easily see it. Moreover, the tip was enough higher than the base, so that, from the pilot’s position, it must appear to project far out in front of the boat. Moreover, the pilot being near the front of the boat, he would need some such guide as to its direction. Tugboats would also need poles for such a purpose. This hypothesis was so much more probable than the others that I accepted it. I formed the conclusion that the pole was set up for the purpose of showing the pilot the direction in which the boat pointed, to enable him to steer correctly.” (Dewey 1910: 69–70; 1933: 92–93)

Bubbles : “In washing tumblers in hot soapsuds and placing them mouth downward on a plate, bubbles appeared on the outside of the mouth of the tumblers and then went inside. Why? The presence of bubbles suggests air, which I note must come from inside the tumbler. I see that the soapy water on the plate prevents escape of the air save as it may be caught in bubbles. But why should air leave the tumbler? There was no substance entering to force it out. It must have expanded. It expands by increase of heat, or by decrease of pressure, or both. Could the air have become heated after the tumbler was taken from the hot suds? Clearly not the air that was already entangled in the water. If heated air was the cause, cold air must have entered in transferring the tumblers from the suds to the plate. I test to see if this supposition is true by taking several more tumblers out. Some I shake so as to make sure of entrapping cold air in them. Some I take out holding mouth downward in order to prevent cold air from entering. Bubbles appear on the outside of every one of the former and on none of the latter. I must be right in my inference. Air from the outside must have been expanded by the heat of the tumbler, which explains the appearance of the bubbles on the outside. But why do they then go inside? Cold contracts. The tumbler cooled and also the air inside it. Tension was removed, and hence bubbles appeared inside. To be sure of this, I test by placing a cup of ice on the tumbler while the bubbles are still forming outside. They soon reverse” (Dewey 1910: 70–71; 1933: 93–94).

Dewey (1910, 1933) sprinkles his book with other examples of critical thinking. We will refer to the following.

Weather : A man on a walk notices that it has suddenly become cool, thinks that it is probably going to rain, looks up and sees a dark cloud obscuring the sun, and quickens his steps (1910: 6–10; 1933: 9–13).

Disorder : A man finds his rooms on his return to them in disorder with his belongings thrown about, thinks at first of burglary as an explanation, then thinks of mischievous children as being an alternative explanation, then looks to see whether valuables are missing, and discovers that they are (1910: 82–83; 1933: 166–168).

Typhoid : A physician diagnosing a patient whose conspicuous symptoms suggest typhoid avoids drawing a conclusion until more data are gathered by questioning the patient and by making tests (1910: 85–86; 1933: 170).

Blur : A moving blur catches our eye in the distance, we ask ourselves whether it is a cloud of whirling dust or a tree moving its branches or a man signaling to us, we think of other traits that should be found on each of those possibilities, and we look and see if those traits are found (1910: 102, 108; 1933: 121, 133).

Suction pump : In thinking about the suction pump, the scientist first notes that it will draw water only to a maximum height of 33 feet at sea level and to a lesser maximum height at higher elevations, selects for attention the differing atmospheric pressure at these elevations, sets up experiments in which the air is removed from a vessel containing water (when suction no longer works) and in which the weight of air at various levels is calculated, compares the results of reasoning about the height to which a given weight of air will allow a suction pump to raise water with the observed maximum height at different elevations, and finally assimilates the suction pump to such apparently different phenomena as the siphon and the rising of a balloon (1910: 150–153; 1933: 195–198).

Diamond : A passenger in a car driving in a diamond lane reserved for vehicles with at least one passenger notices that the diamond marks on the pavement are far apart in some places and close together in others. Why? The driver suggests that the reason may be that the diamond marks are not needed where there is a solid double line separating the diamond lane from the adjoining lane, but are needed when there is a dotted single line permitting crossing into the diamond lane. Further observation confirms that the diamonds are close together when a dotted line separates the diamond lane from its neighbour, but otherwise far apart.

Rash : A woman suddenly develops a very itchy red rash on her throat and upper chest. She recently noticed a mark on the back of her right hand, but was not sure whether the mark was a rash or a scrape. She lies down in bed and thinks about what might be causing the rash and what to do about it. About two weeks before, she began taking blood pressure medication that contained a sulfa drug, and the pharmacist had warned her, in view of a previous allergic reaction to a medication containing a sulfa drug, to be on the alert for an allergic reaction; however, she had been taking the medication for two weeks with no such effect. The day before, she began using a new cream on her neck and upper chest; against the new cream as the cause was mark on the back of her hand, which had not been exposed to the cream. She began taking probiotics about a month before. She also recently started new eye drops, but she supposed that manufacturers of eye drops would be careful not to include allergy-causing components in the medication. The rash might be a heat rash, since she recently was sweating profusely from her upper body. Since she is about to go away on a short vacation, where she would not have access to her usual physician, she decides to keep taking the probiotics and using the new eye drops but to discontinue the blood pressure medication and to switch back to the old cream for her neck and upper chest. She forms a plan to consult her regular physician on her return about the blood pressure medication.

Candidate : Although Dewey included no examples of thinking directed at appraising the arguments of others, such thinking has come to be considered a kind of critical thinking. We find an example of such thinking in the performance task on the Collegiate Learning Assessment (CLA+), which its sponsoring organization describes as

a performance-based assessment that provides a measure of an institution’s contribution to the development of critical-thinking and written communication skills of its students. (Council for Aid to Education 2017)

A sample task posted on its website requires the test-taker to write a report for public distribution evaluating a fictional candidate’s policy proposals and their supporting arguments, using supplied background documents, with a recommendation on whether to endorse the candidate.

Immediate acceptance of an idea that suggests itself as a solution to a problem (e.g., a possible explanation of an event or phenomenon, an action that seems likely to produce a desired result) is “uncritical thinking, the minimum of reflection” (Dewey 1910: 13). On-going suspension of judgment in the light of doubt about a possible solution is not critical thinking (Dewey 1910: 108). Critique driven by a dogmatically held political or religious ideology is not critical thinking; thus Paulo Freire (1968 [1970]) is using the term (e.g., at 1970: 71, 81, 100, 146) in a more politically freighted sense that includes not only reflection but also revolutionary action against oppression. Derivation of a conclusion from given data using an algorithm is not critical thinking.

What is critical thinking? There are many definitions. Ennis (2016) lists 14 philosophically oriented scholarly definitions and three dictionary definitions. Following Rawls (1971), who distinguished his conception of justice from a utilitarian conception but regarded them as rival conceptions of the same concept, Ennis maintains that the 17 definitions are different conceptions of the same concept. Rawls articulated the shared concept of justice as

a characteristic set of principles for assigning basic rights and duties and for determining… the proper distribution of the benefits and burdens of social cooperation. (Rawls 1971: 5)

Bailin et al. (1999b) claim that, if one considers what sorts of thinking an educator would take not to be critical thinking and what sorts to be critical thinking, one can conclude that educators typically understand critical thinking to have at least three features.

• It is done for the purpose of making up one’s mind about what to believe or do.
• The person engaging in the thinking is trying to fulfill standards of adequacy and accuracy appropriate to the thinking.
• The thinking fulfills the relevant standards to some threshold level.

One could sum up the core concept that involves these three features by saying that critical thinking is careful goal-directed thinking. This core concept seems to apply to all the examples of critical thinking described in the previous section. As for the non-examples, their exclusion depends on construing careful thinking as excluding jumping immediately to conclusions, suspending judgment no matter how strong the evidence, reasoning from an unquestioned ideological or religious perspective, and routinely using an algorithm to answer a question.

If the core of critical thinking is careful goal-directed thinking, conceptions of it can vary according to its presumed scope, its presumed goal, one’s criteria and threshold for being careful, and the thinking component on which one focuses. As to its scope, some conceptions (e.g., Dewey 1910, 1933) restrict it to constructive thinking on the basis of one’s own observations and experiments, others (e.g., Ennis 1962; Fisher & Scriven 1997; Johnson 1992) to appraisal of the products of such thinking. Ennis (1991) and Bailin et al. (1999b) take it to cover both construction and appraisal. As to its goal, some conceptions restrict it to forming a judgment (Dewey 1910, 1933; Lipman 1987; Facione 1990a). Others allow for actions as well as beliefs as the end point of a process of critical thinking (Ennis 1991; Bailin et al. 1999b). As to the criteria and threshold for being careful, definitions vary in the term used to indicate that critical thinking satisfies certain norms: “intellectually disciplined” (Scriven & Paul 1987), “reasonable” (Ennis 1991), “skillful” (Lipman 1987), “skilled” (Fisher & Scriven 1997), “careful” (Bailin & Battersby 2009). Some definitions specify these norms, referring variously to “consideration of any belief or supposed form of knowledge in the light of the grounds that support it and the further conclusions to which it tends” (Dewey 1910, 1933); “the methods of logical inquiry and reasoning” (Glaser 1941); “conceptualizing, applying, analyzing, synthesizing, and/or evaluating information gathered from, or generated by, observation, experience, reflection, reasoning, or communication” (Scriven & Paul 1987); the requirement that “it is sensitive to context, relies on criteria, and is self-correcting” (Lipman 1987); “evidential, conceptual, methodological, criteriological, or contextual considerations” (Facione 1990a); and “plus-minus considerations of the product in terms of appropriate standards (or criteria)” (Johnson 1992). Stanovich and Stanovich (2010) propose to ground the concept of critical thinking in the concept of rationality, which they understand as combining epistemic rationality (fitting one’s beliefs to the world) and instrumental rationality (optimizing goal fulfillment); a critical thinker, in their view, is someone with “a propensity to override suboptimal responses from the autonomous mind” (2010: 227). These variant specifications of norms for critical thinking are not necessarily incompatible with one another, and in any case presuppose the core notion of thinking carefully. As to the thinking component singled out, some definitions focus on suspension of judgment during the thinking (Dewey 1910; McPeck 1981), others on inquiry while judgment is suspended (Bailin & Battersby 2009, 2021), others on the resulting judgment (Facione 1990a), and still others on responsiveness to reasons (Siegel 1988). Kuhn (2019) takes critical thinking to be more a dialogic practice of advancing and responding to arguments than an individual ability.

In educational contexts, a definition of critical thinking is a “programmatic definition” (Scheffler 1960: 19). It expresses a practical program for achieving an educational goal. For this purpose, a one-sentence formulaic definition is much less useful than articulation of a critical thinking process, with criteria and standards for the kinds of thinking that the process may involve. The real educational goal is recognition, adoption and implementation by students of those criteria and standards. That adoption and implementation in turn consists in acquiring the knowledge, abilities and dispositions of a critical thinker.

Conceptions of critical thinking generally do not include moral integrity as part of the concept. Dewey, for example, took critical thinking to be the ultimate intellectual goal of education, but distinguished it from the development of social cooperation among school children, which he took to be the central moral goal. Ennis (1996, 2011) added to his previous list of critical thinking dispositions a group of dispositions to care about the dignity and worth of every person, which he described as a “correlative” (1996) disposition without which critical thinking would be less valuable and perhaps harmful. An educational program that aimed at developing critical thinking but not the correlative disposition to care about the dignity and worth of every person, he asserted, “would be deficient and perhaps dangerous” (Ennis 1996: 172).

Dewey thought that education for reflective thinking would be of value to both the individual and society; recognition in educational practice of the kinship to the scientific attitude of children’s native curiosity, fertile imagination and love of experimental inquiry “would make for individual happiness and the reduction of social waste” (Dewey 1910: iii). Schools participating in the Eight-Year Study took development of the habit of reflective thinking and skill in solving problems as a means to leading young people to understand, appreciate and live the democratic way of life characteristic of the United States (Aikin 1942: 17–18, 81). Harvey Siegel (1988: 55–61) has offered four considerations in support of adopting critical thinking as an educational ideal. (1) Respect for persons requires that schools and teachers honour students’ demands for reasons and explanations, deal with students honestly, and recognize the need to confront students’ independent judgment; these requirements concern the manner in which teachers treat students. (2) Education has the task of preparing children to be successful adults, a task that requires development of their self-sufficiency. (3) Education should initiate children into the rational traditions in such fields as history, science and mathematics. (4) Education should prepare children to become democratic citizens, which requires reasoned procedures and critical talents and attitudes. To supplement these considerations, Siegel (1988: 62–90) responds to two objections: the ideology objection that adoption of any educational ideal requires a prior ideological commitment and the indoctrination objection that cultivation of critical thinking cannot escape being a form of indoctrination.

Despite the diversity of our 11 examples, one can recognize a common pattern. Dewey analyzed it as consisting of five phases:

• suggestions , in which the mind leaps forward to a possible solution;
• an intellectualization of the difficulty or perplexity into a problem to be solved, a question for which the answer must be sought;
• the use of one suggestion after another as a leading idea, or hypothesis , to initiate and guide observation and other operations in collection of factual material;
• the mental elaboration of the idea or supposition as an idea or supposition ( reasoning , in the sense on which reasoning is a part, not the whole, of inference); and
• testing the hypothesis by overt or imaginative action. (Dewey 1933: 106–107; italics in original)

The process of reflective thinking consisting of these phases would be preceded by a perplexed, troubled or confused situation and followed by a cleared-up, unified, resolved situation (Dewey 1933: 106). The term ‘phases’ replaced the term ‘steps’ (Dewey 1910: 72), thus removing the earlier suggestion of an invariant sequence. Variants of the above analysis appeared in (Dewey 1916: 177) and (Dewey 1938: 101–119).

The variant formulations indicate the difficulty of giving a single logical analysis of such a varied process. The process of critical thinking may have a spiral pattern, with the problem being redefined in the light of obstacles to solving it as originally formulated. For example, the person in Transit might have concluded that getting to the appointment at the scheduled time was impossible and have reformulated the problem as that of rescheduling the appointment for a mutually convenient time. Further, defining a problem does not always follow after or lead immediately to an idea of a suggested solution. Nor should it do so, as Dewey himself recognized in describing the physician in Typhoid as avoiding any strong preference for this or that conclusion before getting further information (Dewey 1910: 85; 1933: 170). People with a hypothesis in mind, even one to which they have a very weak commitment, have a so-called “confirmation bias” (Nickerson 1998): they are likely to pay attention to evidence that confirms the hypothesis and to ignore evidence that counts against it or for some competing hypothesis. Detectives, intelligence agencies, and investigators of airplane accidents are well advised to gather relevant evidence systematically and to postpone even tentative adoption of an explanatory hypothesis until the collected evidence rules out with the appropriate degree of certainty all but one explanation. Dewey’s analysis of the critical thinking process can be faulted as well for requiring acceptance or rejection of a possible solution to a defined problem, with no allowance for deciding in the light of the available evidence to suspend judgment. Further, given the great variety of kinds of problems for which reflection is appropriate, there is likely to be variation in its component events. Perhaps the best way to conceptualize the critical thinking process is as a checklist whose component events can occur in a variety of orders, selectively, and more than once. These component events might include (1) noticing a difficulty, (2) defining the problem, (3) dividing the problem into manageable sub-problems, (4) formulating a variety of possible solutions to the problem or sub-problem, (5) determining what evidence is relevant to deciding among possible solutions to the problem or sub-problem, (6) devising a plan of systematic observation or experiment that will uncover the relevant evidence, (7) carrying out the plan of systematic observation or experimentation, (8) noting the results of the systematic observation or experiment, (9) gathering relevant testimony and information from others, (10) judging the credibility of testimony and information gathered from others, (11) drawing conclusions from gathered evidence and accepted testimony, and (12) accepting a solution that the evidence adequately supports (cf. Hitchcock 2017: 485).

Checklist conceptions of the process of critical thinking are open to the objection that they are too mechanical and procedural to fit the multi-dimensional and emotionally charged issues for which critical thinking is urgently needed (Paul 1984). For such issues, a more dialectical process is advocated, in which competing relevant world views are identified, their implications explored, and some sort of creative synthesis attempted.

If one considers the critical thinking process illustrated by the 11 examples, one can identify distinct kinds of mental acts and mental states that form part of it. To distinguish, label and briefly characterize these components is a useful preliminary to identifying abilities, skills, dispositions, attitudes, habits and the like that contribute causally to thinking critically. Identifying such abilities and habits is in turn a useful preliminary to setting educational goals. Setting the goals is in its turn a useful preliminary to designing strategies for helping learners to achieve the goals and to designing ways of measuring the extent to which learners have done so. Such measures provide both feedback to learners on their achievement and a basis for experimental research on the effectiveness of various strategies for educating people to think critically. Let us begin, then, by distinguishing the kinds of mental acts and mental events that can occur in a critical thinking process.

• Observing : One notices something in one’s immediate environment (sudden cooling of temperature in Weather , bubbles forming outside a glass and then going inside in Bubbles , a moving blur in the distance in Blur , a rash in Rash ). Or one notes the results of an experiment or systematic observation (valuables missing in Disorder , no suction without air pressure in Suction pump )
• Feeling : One feels puzzled or uncertain about something (how to get to an appointment on time in Transit , why the diamonds vary in spacing in Diamond ). One wants to resolve this perplexity. One feels satisfaction once one has worked out an answer (to take the subway express in Transit , diamonds closer when needed as a warning in Diamond ).
• Wondering : One formulates a question to be addressed (why bubbles form outside a tumbler taken from hot water in Bubbles , how suction pumps work in Suction pump , what caused the rash in Rash ).
• Imagining : One thinks of possible answers (bus or subway or elevated in Transit , flagpole or ornament or wireless communication aid or direction indicator in Ferryboat , allergic reaction or heat rash in Rash ).
• Inferring : One works out what would be the case if a possible answer were assumed (valuables missing if there has been a burglary in Disorder , earlier start to the rash if it is an allergic reaction to a sulfa drug in Rash ). Or one draws a conclusion once sufficient relevant evidence is gathered (take the subway in Transit , burglary in Disorder , discontinue blood pressure medication and new cream in Rash ).
• Knowledge : One uses stored knowledge of the subject-matter to generate possible answers or to infer what would be expected on the assumption of a particular answer (knowledge of a city’s public transit system in Transit , of the requirements for a flagpole in Ferryboat , of Boyle’s law in Bubbles , of allergic reactions in Rash ).
• Experimenting : One designs and carries out an experiment or a systematic observation to find out whether the results deduced from a possible answer will occur (looking at the location of the flagpole in relation to the pilot’s position in Ferryboat , putting an ice cube on top of a tumbler taken from hot water in Bubbles , measuring the height to which a suction pump will draw water at different elevations in Suction pump , noticing the spacing of diamonds when movement to or from a diamond lane is allowed in Diamond ).
• Consulting : One finds a source of information, gets the information from the source, and makes a judgment on whether to accept it. None of our 11 examples include searching for sources of information. In this respect they are unrepresentative, since most people nowadays have almost instant access to information relevant to answering any question, including many of those illustrated by the examples. However, Candidate includes the activities of extracting information from sources and evaluating its credibility.
• Identifying and analyzing arguments : One notices an argument and works out its structure and content as a preliminary to evaluating its strength. This activity is central to Candidate . It is an important part of a critical thinking process in which one surveys arguments for various positions on an issue.
• Judging : One makes a judgment on the basis of accumulated evidence and reasoning, such as the judgment in Ferryboat that the purpose of the pole is to provide direction to the pilot.
• Deciding : One makes a decision on what to do or on what policy to adopt, as in the decision in Transit to take the subway.

By definition, a person who does something voluntarily is both willing and able to do that thing at that time. Both the willingness and the ability contribute causally to the person’s action, in the sense that the voluntary action would not occur if either (or both) of these were lacking. For example, suppose that one is standing with one’s arms at one’s sides and one voluntarily lifts one’s right arm to an extended horizontal position. One would not do so if one were unable to lift one’s arm, if for example one’s right side was paralyzed as the result of a stroke. Nor would one do so if one were unwilling to lift one’s arm, if for example one were participating in a street demonstration at which a white supremacist was urging the crowd to lift their right arm in a Nazi salute and one were unwilling to express support in this way for the racist Nazi ideology. The same analysis applies to a voluntary mental process of thinking critically. It requires both willingness and ability to think critically, including willingness and ability to perform each of the mental acts that compose the process and to coordinate those acts in a sequence that is directed at resolving the initiating perplexity.

Consider willingness first. We can identify causal contributors to willingness to think critically by considering factors that would cause a person who was able to think critically about an issue nevertheless not to do so (Hamby 2014). For each factor, the opposite condition thus contributes causally to willingness to think critically on a particular occasion. For example, people who habitually jump to conclusions without considering alternatives will not think critically about issues that arise, even if they have the required abilities. The contrary condition of willingness to suspend judgment is thus a causal contributor to thinking critically.

Now consider ability. In contrast to the ability to move one’s arm, which can be completely absent because a stroke has left the arm paralyzed, the ability to think critically is a developed ability, whose absence is not a complete absence of ability to think but absence of ability to think well. We can identify the ability to think well directly, in terms of the norms and standards for good thinking. In general, to be able do well the thinking activities that can be components of a critical thinking process, one needs to know the concepts and principles that characterize their good performance, to recognize in particular cases that the concepts and principles apply, and to apply them. The knowledge, recognition and application may be procedural rather than declarative. It may be domain-specific rather than widely applicable, and in either case may need subject-matter knowledge, sometimes of a deep kind.

Reflections of the sort illustrated by the previous two paragraphs have led scholars to identify the knowledge, abilities and dispositions of a “critical thinker”, i.e., someone who thinks critically whenever it is appropriate to do so. We turn now to these three types of causal contributors to thinking critically. We start with dispositions, since arguably these are the most powerful contributors to being a critical thinker, can be fostered at an early stage of a child’s development, and are susceptible to general improvement (Glaser 1941: 175)

8. Critical Thinking Dispositions

Educational researchers use the term ‘dispositions’ broadly for the habits of mind and attitudes that contribute causally to being a critical thinker. Some writers (e.g., Paul & Elder 2006; Hamby 2014; Bailin & Battersby 2016a) propose to use the term ‘virtues’ for this dimension of a critical thinker. The virtues in question, although they are virtues of character, concern the person’s ways of thinking rather than the person’s ways of behaving towards others. They are not moral virtues but intellectual virtues, of the sort articulated by Zagzebski (1996) and discussed by Turri, Alfano, and Greco (2017).

On a realistic conception, thinking dispositions or intellectual virtues are real properties of thinkers. They are general tendencies, propensities, or inclinations to think in particular ways in particular circumstances, and can be genuinely explanatory (Siegel 1999). Sceptics argue that there is no evidence for a specific mental basis for the habits of mind that contribute to thinking critically, and that it is pedagogically misleading to posit such a basis (Bailin et al. 1999a). Whatever their status, critical thinking dispositions need motivation for their initial formation in a child—motivation that may be external or internal. As children develop, the force of habit will gradually become important in sustaining the disposition (Nieto & Valenzuela 2012). Mere force of habit, however, is unlikely to sustain critical thinking dispositions. Critical thinkers must value and enjoy using their knowledge and abilities to think things through for themselves. They must be committed to, and lovers of, inquiry.

A person may have a critical thinking disposition with respect to only some kinds of issues. For example, one could be open-minded about scientific issues but not about religious issues. Similarly, one could be confident in one’s ability to reason about the theological implications of the existence of evil in the world but not in one’s ability to reason about the best design for a guided ballistic missile.

Facione (1990a: 25) divides “affective dispositions” of critical thinking into approaches to life and living in general and approaches to specific issues, questions or problems. Adapting this distinction, one can usefully divide critical thinking dispositions into initiating dispositions (those that contribute causally to starting to think critically about an issue) and internal dispositions (those that contribute causally to doing a good job of thinking critically once one has started). The two categories are not mutually exclusive. For example, open-mindedness, in the sense of willingness to consider alternative points of view to one’s own, is both an initiating and an internal disposition.

Using the strategy of considering factors that would block people with the ability to think critically from doing so, we can identify as initiating dispositions for thinking critically attentiveness, a habit of inquiry, self-confidence, courage, open-mindedness, willingness to suspend judgment, trust in reason, wanting evidence for one’s beliefs, and seeking the truth. We consider briefly what each of these dispositions amounts to, in each case citing sources that acknowledge them.

• Attentiveness : One will not think critically if one fails to recognize an issue that needs to be thought through. For example, the pedestrian in Weather would not have looked up if he had not noticed that the air was suddenly cooler. To be a critical thinker, then, one needs to be habitually attentive to one’s surroundings, noticing not only what one senses but also sources of perplexity in messages received and in one’s own beliefs and attitudes (Facione 1990a: 25; Facione, Facione, & Giancarlo 2001).
• Habit of inquiry : Inquiry is effortful, and one needs an internal push to engage in it. For example, the student in Bubbles could easily have stopped at idle wondering about the cause of the bubbles rather than reasoning to a hypothesis, then designing and executing an experiment to test it. Thus willingness to think critically needs mental energy and initiative. What can supply that energy? Love of inquiry, or perhaps just a habit of inquiry. Hamby (2015) has argued that willingness to inquire is the central critical thinking virtue, one that encompasses all the others. It is recognized as a critical thinking disposition by Dewey (1910: 29; 1933: 35), Glaser (1941: 5), Ennis (1987: 12; 1991: 8), Facione (1990a: 25), Bailin et al. (1999b: 294), Halpern (1998: 452), and Facione, Facione, & Giancarlo (2001).
• Self-confidence : Lack of confidence in one’s abilities can block critical thinking. For example, if the woman in Rash lacked confidence in her ability to figure things out for herself, she might just have assumed that the rash on her chest was the allergic reaction to her medication against which the pharmacist had warned her. Thus willingness to think critically requires confidence in one’s ability to inquire (Facione 1990a: 25; Facione, Facione, & Giancarlo 2001).
• Courage : Fear of thinking for oneself can stop one from doing it. Thus willingness to think critically requires intellectual courage (Paul & Elder 2006: 16).
• Open-mindedness : A dogmatic attitude will impede thinking critically. For example, a person who adheres rigidly to a “pro-choice” position on the issue of the legal status of induced abortion is likely to be unwilling to consider seriously the issue of when in its development an unborn child acquires a moral right to life. Thus willingness to think critically requires open-mindedness, in the sense of a willingness to examine questions to which one already accepts an answer but which further evidence or reasoning might cause one to answer differently (Dewey 1933; Facione 1990a; Ennis 1991; Bailin et al. 1999b; Halpern 1998, Facione, Facione, & Giancarlo 2001). Paul (1981) emphasizes open-mindedness about alternative world-views, and recommends a dialectical approach to integrating such views as central to what he calls “strong sense” critical thinking. In three studies, Haran, Ritov, & Mellers (2013) found that actively open-minded thinking, including “the tendency to weigh new evidence against a favored belief, to spend sufficient time on a problem before giving up, and to consider carefully the opinions of others in forming one’s own”, led study participants to acquire information and thus to make accurate estimations.
• Willingness to suspend judgment : Premature closure on an initial solution will block critical thinking. Thus willingness to think critically requires a willingness to suspend judgment while alternatives are explored (Facione 1990a; Ennis 1991; Halpern 1998).
• Trust in reason : Since distrust in the processes of reasoned inquiry will dissuade one from engaging in it, trust in them is an initiating critical thinking disposition (Facione 1990a, 25; Bailin et al. 1999b: 294; Facione, Facione, & Giancarlo 2001; Paul & Elder 2006). In reaction to an allegedly exclusive emphasis on reason in critical thinking theory and pedagogy, Thayer-Bacon (2000) argues that intuition, imagination, and emotion have important roles to play in an adequate conception of critical thinking that she calls “constructive thinking”. From her point of view, critical thinking requires trust not only in reason but also in intuition, imagination, and emotion.
• Seeking the truth : If one does not care about the truth but is content to stick with one’s initial bias on an issue, then one will not think critically about it. Seeking the truth is thus an initiating critical thinking disposition (Bailin et al. 1999b: 294; Facione, Facione, & Giancarlo 2001). A disposition to seek the truth is implicit in more specific critical thinking dispositions, such as trying to be well-informed, considering seriously points of view other than one’s own, looking for alternatives, suspending judgment when the evidence is insufficient, and adopting a position when the evidence supporting it is sufficient.

Some of the initiating dispositions, such as open-mindedness and willingness to suspend judgment, are also internal critical thinking dispositions, in the sense of mental habits or attitudes that contribute causally to doing a good job of critical thinking once one starts the process. But there are many other internal critical thinking dispositions. Some of them are parasitic on one’s conception of good thinking. For example, it is constitutive of good thinking about an issue to formulate the issue clearly and to maintain focus on it. For this purpose, one needs not only the corresponding ability but also the corresponding disposition. Ennis (1991: 8) describes it as the disposition “to determine and maintain focus on the conclusion or question”, Facione (1990a: 25) as “clarity in stating the question or concern”. Other internal dispositions are motivators to continue or adjust the critical thinking process, such as willingness to persist in a complex task and willingness to abandon nonproductive strategies in an attempt to self-correct (Halpern 1998: 452). For a list of identified internal critical thinking dispositions, see the Supplement on Internal Critical Thinking Dispositions .

Some theorists postulate skills, i.e., acquired abilities, as operative in critical thinking. It is not obvious, however, that a good mental act is the exercise of a generic acquired skill. Inferring an expected time of arrival, as in Transit , has some generic components but also uses non-generic subject-matter knowledge. Bailin et al. (1999a) argue against viewing critical thinking skills as generic and discrete, on the ground that skilled performance at a critical thinking task cannot be separated from knowledge of concepts and from domain-specific principles of good thinking. Talk of skills, they concede, is unproblematic if it means merely that a person with critical thinking skills is capable of intelligent performance.

Despite such scepticism, theorists of critical thinking have listed as general contributors to critical thinking what they variously call abilities (Glaser 1941; Ennis 1962, 1991), skills (Facione 1990a; Halpern 1998) or competencies (Fisher & Scriven 1997). Amalgamating these lists would produce a confusing and chaotic cornucopia of more than 50 possible educational objectives, with only partial overlap among them. It makes sense instead to try to understand the reasons for the multiplicity and diversity, and to make a selection according to one’s own reasons for singling out abilities to be developed in a critical thinking curriculum. Two reasons for diversity among lists of critical thinking abilities are the underlying conception of critical thinking and the envisaged educational level. Appraisal-only conceptions, for example, involve a different suite of abilities than constructive-only conceptions. Some lists, such as those in (Glaser 1941), are put forward as educational objectives for secondary school students, whereas others are proposed as objectives for college students (e.g., Facione 1990a).

The abilities described in the remaining paragraphs of this section emerge from reflection on the general abilities needed to do well the thinking activities identified in section 6 as components of the critical thinking process described in section 5 . The derivation of each collection of abilities is accompanied by citation of sources that list such abilities and of standardized tests that claim to test them.

Observational abilities : Careful and accurate observation sometimes requires specialist expertise and practice, as in the case of observing birds and observing accident scenes. However, there are general abilities of noticing what one’s senses are picking up from one’s environment and of being able to articulate clearly and accurately to oneself and others what one has observed. It helps in exercising them to be able to recognize and take into account factors that make one’s observation less trustworthy, such as prior framing of the situation, inadequate time, deficient senses, poor observation conditions, and the like. It helps as well to be skilled at taking steps to make one’s observation more trustworthy, such as moving closer to get a better look, measuring something three times and taking the average, and checking what one thinks one is observing with someone else who is in a good position to observe it. It also helps to be skilled at recognizing respects in which one’s report of one’s observation involves inference rather than direct observation, so that one can then consider whether the inference is justified. These abilities come into play as well when one thinks about whether and with what degree of confidence to accept an observation report, for example in the study of history or in a criminal investigation or in assessing news reports. Observational abilities show up in some lists of critical thinking abilities (Ennis 1962: 90; Facione 1990a: 16; Ennis 1991: 9). There are items testing a person’s ability to judge the credibility of observation reports in the Cornell Critical Thinking Tests, Levels X and Z (Ennis & Millman 1971; Ennis, Millman, & Tomko 1985, 2005). Norris and King (1983, 1985, 1990a, 1990b) is a test of ability to appraise observation reports.

Emotional abilities : The emotions that drive a critical thinking process are perplexity or puzzlement, a wish to resolve it, and satisfaction at achieving the desired resolution. Children experience these emotions at an early age, without being trained to do so. Education that takes critical thinking as a goal needs only to channel these emotions and to make sure not to stifle them. Collaborative critical thinking benefits from ability to recognize one’s own and others’ emotional commitments and reactions.

Questioning abilities : A critical thinking process needs transformation of an inchoate sense of perplexity into a clear question. Formulating a question well requires not building in questionable assumptions, not prejudging the issue, and using language that in context is unambiguous and precise enough (Ennis 1962: 97; 1991: 9).

Imaginative abilities : Thinking directed at finding the correct causal explanation of a general phenomenon or particular event requires an ability to imagine possible explanations. Thinking about what policy or plan of action to adopt requires generation of options and consideration of possible consequences of each option. Domain knowledge is required for such creative activity, but a general ability to imagine alternatives is helpful and can be nurtured so as to become easier, quicker, more extensive, and deeper (Dewey 1910: 34–39; 1933: 40–47). Facione (1990a) and Halpern (1998) include the ability to imagine alternatives as a critical thinking ability.

Inferential abilities : The ability to draw conclusions from given information, and to recognize with what degree of certainty one’s own or others’ conclusions follow, is universally recognized as a general critical thinking ability. All 11 examples in section 2 of this article include inferences, some from hypotheses or options (as in Transit , Ferryboat and Disorder ), others from something observed (as in Weather and Rash ). None of these inferences is formally valid. Rather, they are licensed by general, sometimes qualified substantive rules of inference (Toulmin 1958) that rest on domain knowledge—that a bus trip takes about the same time in each direction, that the terminal of a wireless telegraph would be located on the highest possible place, that sudden cooling is often followed by rain, that an allergic reaction to a sulfa drug generally shows up soon after one starts taking it. It is a matter of controversy to what extent the specialized ability to deduce conclusions from premisses using formal rules of inference is needed for critical thinking. Dewey (1933) locates logical forms in setting out the products of reflection rather than in the process of reflection. Ennis (1981a), on the other hand, maintains that a liberally-educated person should have the following abilities: to translate natural-language statements into statements using the standard logical operators, to use appropriately the language of necessary and sufficient conditions, to deal with argument forms and arguments containing symbols, to determine whether in virtue of an argument’s form its conclusion follows necessarily from its premisses, to reason with logically complex propositions, and to apply the rules and procedures of deductive logic. Inferential abilities are recognized as critical thinking abilities by Glaser (1941: 6), Facione (1990a: 9), Ennis (1991: 9), Fisher & Scriven (1997: 99, 111), and Halpern (1998: 452). Items testing inferential abilities constitute two of the five subtests of the Watson Glaser Critical Thinking Appraisal (Watson & Glaser 1980a, 1980b, 1994), two of the four sections in the Cornell Critical Thinking Test Level X (Ennis & Millman 1971; Ennis, Millman, & Tomko 1985, 2005), three of the seven sections in the Cornell Critical Thinking Test Level Z (Ennis & Millman 1971; Ennis, Millman, & Tomko 1985, 2005), 11 of the 34 items on Forms A and B of the California Critical Thinking Skills Test (Facione 1990b, 1992), and a high but variable proportion of the 25 selected-response questions in the Collegiate Learning Assessment (Council for Aid to Education 2017).

Experimenting abilities : Knowing how to design and execute an experiment is important not just in scientific research but also in everyday life, as in Rash . Dewey devoted a whole chapter of his How We Think (1910: 145–156; 1933: 190–202) to the superiority of experimentation over observation in advancing knowledge. Experimenting abilities come into play at one remove in appraising reports of scientific studies. Skill in designing and executing experiments includes the acknowledged abilities to appraise evidence (Glaser 1941: 6), to carry out experiments and to apply appropriate statistical inference techniques (Facione 1990a: 9), to judge inductions to an explanatory hypothesis (Ennis 1991: 9), and to recognize the need for an adequately large sample size (Halpern 1998). The Cornell Critical Thinking Test Level Z (Ennis & Millman 1971; Ennis, Millman, & Tomko 1985, 2005) includes four items (out of 52) on experimental design. The Collegiate Learning Assessment (Council for Aid to Education 2017) makes room for appraisal of study design in both its performance task and its selected-response questions.

Consulting abilities : Skill at consulting sources of information comes into play when one seeks information to help resolve a problem, as in Candidate . Ability to find and appraise information includes ability to gather and marshal pertinent information (Glaser 1941: 6), to judge whether a statement made by an alleged authority is acceptable (Ennis 1962: 84), to plan a search for desired information (Facione 1990a: 9), and to judge the credibility of a source (Ennis 1991: 9). Ability to judge the credibility of statements is tested by 24 items (out of 76) in the Cornell Critical Thinking Test Level X (Ennis & Millman 1971; Ennis, Millman, & Tomko 1985, 2005) and by four items (out of 52) in the Cornell Critical Thinking Test Level Z (Ennis & Millman 1971; Ennis, Millman, & Tomko 1985, 2005). The College Learning Assessment’s performance task requires evaluation of whether information in documents is credible or unreliable (Council for Aid to Education 2017).

Argument analysis abilities : The ability to identify and analyze arguments contributes to the process of surveying arguments on an issue in order to form one’s own reasoned judgment, as in Candidate . The ability to detect and analyze arguments is recognized as a critical thinking skill by Facione (1990a: 7–8), Ennis (1991: 9) and Halpern (1998). Five items (out of 34) on the California Critical Thinking Skills Test (Facione 1990b, 1992) test skill at argument analysis. The College Learning Assessment (Council for Aid to Education 2017) incorporates argument analysis in its selected-response tests of critical reading and evaluation and of critiquing an argument.

Judging skills and deciding skills : Skill at judging and deciding is skill at recognizing what judgment or decision the available evidence and argument supports, and with what degree of confidence. It is thus a component of the inferential skills already discussed.

Lists and tests of critical thinking abilities often include two more abilities: identifying assumptions and constructing and evaluating definitions.

In addition to dispositions and abilities, critical thinking needs knowledge: of critical thinking concepts, of critical thinking principles, and of the subject-matter of the thinking.

We can derive a short list of concepts whose understanding contributes to critical thinking from the critical thinking abilities described in the preceding section. Observational abilities require an understanding of the difference between observation and inference. Questioning abilities require an understanding of the concepts of ambiguity and vagueness. Inferential abilities require an understanding of the difference between conclusive and defeasible inference (traditionally, between deduction and induction), as well as of the difference between necessary and sufficient conditions. Experimenting abilities require an understanding of the concepts of hypothesis, null hypothesis, assumption and prediction, as well as of the concept of statistical significance and of its difference from importance. They also require an understanding of the difference between an experiment and an observational study, and in particular of the difference between a randomized controlled trial, a prospective correlational study and a retrospective (case-control) study. Argument analysis abilities require an understanding of the concepts of argument, premiss, assumption, conclusion and counter-consideration. Additional critical thinking concepts are proposed by Bailin et al. (1999b: 293), Fisher & Scriven (1997: 105–106), Black (2012), and Blair (2021).

According to Glaser (1941: 25), ability to think critically requires knowledge of the methods of logical inquiry and reasoning. If we review the list of abilities in the preceding section, however, we can see that some of them can be acquired and exercised merely through practice, possibly guided in an educational setting, followed by feedback. Searching intelligently for a causal explanation of some phenomenon or event requires that one consider a full range of possible causal contributors, but it seems more important that one implements this principle in one’s practice than that one is able to articulate it. What is important is “operational knowledge” of the standards and principles of good thinking (Bailin et al. 1999b: 291–293). But the development of such critical thinking abilities as designing an experiment or constructing an operational definition can benefit from learning their underlying theory. Further, explicit knowledge of quirks of human thinking seems useful as a cautionary guide. Human memory is not just fallible about details, as people learn from their own experiences of misremembering, but is so malleable that a detailed, clear and vivid recollection of an event can be a total fabrication (Loftus 2017). People seek or interpret evidence in ways that are partial to their existing beliefs and expectations, often unconscious of their “confirmation bias” (Nickerson 1998). Not only are people subject to this and other cognitive biases (Kahneman 2011), of which they are typically unaware, but it may be counter-productive for one to make oneself aware of them and try consciously to counteract them or to counteract social biases such as racial or sexual stereotypes (Kenyon & Beaulac 2014). It is helpful to be aware of these facts and of the superior effectiveness of blocking the operation of biases—for example, by making an immediate record of one’s observations, refraining from forming a preliminary explanatory hypothesis, blind refereeing, double-blind randomized trials, and blind grading of students’ work. It is also helpful to be aware of the prevalence of “noise” (unwanted unsystematic variability of judgments), of how to detect noise (through a noise audit), and of how to reduce noise: make accuracy the goal, think statistically, break a process of arriving at a judgment into independent tasks, resist premature intuitions, in a group get independent judgments first, favour comparative judgments and scales (Kahneman, Sibony, & Sunstein 2021). It is helpful as well to be aware of the concept of “bounded rationality” in decision-making and of the related distinction between “satisficing” and optimizing (Simon 1956; Gigerenzer 2001).

Critical thinking about an issue requires substantive knowledge of the domain to which the issue belongs. Critical thinking abilities are not a magic elixir that can be applied to any issue whatever by somebody who has no knowledge of the facts relevant to exploring that issue. For example, the student in Bubbles needed to know that gases do not penetrate solid objects like a glass, that air expands when heated, that the volume of an enclosed gas varies directly with its temperature and inversely with its pressure, and that hot objects will spontaneously cool down to the ambient temperature of their surroundings unless kept hot by insulation or a source of heat. Critical thinkers thus need a rich fund of subject-matter knowledge relevant to the variety of situations they encounter. This fact is recognized in the inclusion among critical thinking dispositions of a concern to become and remain generally well informed.

Experimental educational interventions, with control groups, have shown that education can improve critical thinking skills and dispositions, as measured by standardized tests. For information about these tests, see the Supplement on Assessment .

What educational methods are most effective at developing the dispositions, abilities and knowledge of a critical thinker? In a comprehensive meta-analysis of experimental and quasi-experimental studies of strategies for teaching students to think critically, Abrami et al. (2015) found that dialogue, anchored instruction, and mentoring each increased the effectiveness of the educational intervention, and that they were most effective when combined. They also found that in these studies a combination of separate instruction in critical thinking with subject-matter instruction in which students are encouraged to think critically was more effective than either by itself. However, the difference was not statistically significant; that is, it might have arisen by chance.

Most of these studies lack the longitudinal follow-up required to determine whether the observed differential improvements in critical thinking abilities or dispositions continue over time, for example until high school or college graduation. For details on studies of methods of developing critical thinking skills and dispositions, see the Supplement on Educational Methods .

12. Controversies

Scholars have denied the generalizability of critical thinking abilities across subject domains, have alleged bias in critical thinking theory and pedagogy, and have investigated the relationship of critical thinking to other kinds of thinking.

McPeck (1981) attacked the thinking skills movement of the 1970s, including the critical thinking movement. He argued that there are no general thinking skills, since thinking is always thinking about some subject-matter. It is futile, he claimed, for schools and colleges to teach thinking as if it were a separate subject. Rather, teachers should lead their pupils to become autonomous thinkers by teaching school subjects in a way that brings out their cognitive structure and that encourages and rewards discussion and argument. As some of his critics (e.g., Paul 1985; Siegel 1985) pointed out, McPeck’s central argument needs elaboration, since it has obvious counter-examples in writing and speaking, for which (up to a certain level of complexity) there are teachable general abilities even though they are always about some subject-matter. To make his argument convincing, McPeck needs to explain how thinking differs from writing and speaking in a way that does not permit useful abstraction of its components from the subject-matters with which it deals. He has not done so. Nevertheless, his position that the dispositions and abilities of a critical thinker are best developed in the context of subject-matter instruction is shared by many theorists of critical thinking, including Dewey (1910, 1933), Glaser (1941), Passmore (1980), Weinstein (1990), Bailin et al. (1999b), and Willingham (2019).

McPeck’s challenge prompted reflection on the extent to which critical thinking is subject-specific. McPeck argued for a strong subject-specificity thesis, according to which it is a conceptual truth that all critical thinking abilities are specific to a subject. (He did not however extend his subject-specificity thesis to critical thinking dispositions. In particular, he took the disposition to suspend judgment in situations of cognitive dissonance to be a general disposition.) Conceptual subject-specificity is subject to obvious counter-examples, such as the general ability to recognize confusion of necessary and sufficient conditions. A more modest thesis, also endorsed by McPeck, is epistemological subject-specificity, according to which the norms of good thinking vary from one field to another. Epistemological subject-specificity clearly holds to a certain extent; for example, the principles in accordance with which one solves a differential equation are quite different from the principles in accordance with which one determines whether a painting is a genuine Picasso. But the thesis suffers, as Ennis (1989) points out, from vagueness of the concept of a field or subject and from the obvious existence of inter-field principles, however broadly the concept of a field is construed. For example, the principles of hypothetico-deductive reasoning hold for all the varied fields in which such reasoning occurs. A third kind of subject-specificity is empirical subject-specificity, according to which as a matter of empirically observable fact a person with the abilities and dispositions of a critical thinker in one area of investigation will not necessarily have them in another area of investigation.

The thesis of empirical subject-specificity raises the general problem of transfer. If critical thinking abilities and dispositions have to be developed independently in each school subject, how are they of any use in dealing with the problems of everyday life and the political and social issues of contemporary society, most of which do not fit into the framework of a traditional school subject? Proponents of empirical subject-specificity tend to argue that transfer is more likely to occur if there is critical thinking instruction in a variety of domains, with explicit attention to dispositions and abilities that cut across domains. But evidence for this claim is scanty. There is a need for well-designed empirical studies that investigate the conditions that make transfer more likely.

It is common ground in debates about the generality or subject-specificity of critical thinking dispositions and abilities that critical thinking about any topic requires background knowledge about the topic. For example, the most sophisticated understanding of the principles of hypothetico-deductive reasoning is of no help unless accompanied by some knowledge of what might be plausible explanations of some phenomenon under investigation.

Critics have objected to bias in the theory, pedagogy and practice of critical thinking. Commentators (e.g., Alston 1995; Ennis 1998) have noted that anyone who takes a position has a bias in the neutral sense of being inclined in one direction rather than others. The critics, however, are objecting to bias in the pejorative sense of an unjustified favoring of certain ways of knowing over others, frequently alleging that the unjustly favoured ways are those of a dominant sex or culture (Bailin 1995). These ways favour:

• reinforcement of egocentric and sociocentric biases over dialectical engagement with opposing world-views (Paul 1981, 1984; Warren 1998)
• distancing from the object of inquiry over closeness to it (Martin 1992; Thayer-Bacon 1992)
• indifference to the situation of others over care for them (Martin 1992)
• orientation to thought over orientation to action (Martin 1992)
• being reasonable over caring to understand people’s ideas (Thayer-Bacon 1993)
• being neutral and objective over being embodied and situated (Thayer-Bacon 1995a)
• doubting over believing (Thayer-Bacon 1995b)
• reason over emotion, imagination and intuition (Thayer-Bacon 2000)
• solitary thinking over collaborative thinking (Thayer-Bacon 2000)
• written and spoken assignments over other forms of expression (Alston 2001)
• attention to written and spoken communications over attention to human problems (Alston 2001)
• winning debates in the public sphere over making and understanding meaning (Alston 2001)

A common thread in this smorgasbord of accusations is dissatisfaction with focusing on the logical analysis and evaluation of reasoning and arguments. While these authors acknowledge that such analysis and evaluation is part of critical thinking and should be part of its conceptualization and pedagogy, they insist that it is only a part. Paul (1981), for example, bemoans the tendency of atomistic teaching of methods of analyzing and evaluating arguments to turn students into more able sophists, adept at finding fault with positions and arguments with which they disagree but even more entrenched in the egocentric and sociocentric biases with which they began. Martin (1992) and Thayer-Bacon (1992) cite with approval the self-reported intimacy with their subject-matter of leading researchers in biology and medicine, an intimacy that conflicts with the distancing allegedly recommended in standard conceptions and pedagogy of critical thinking. Thayer-Bacon (2000) contrasts the embodied and socially embedded learning of her elementary school students in a Montessori school, who used their imagination, intuition and emotions as well as their reason, with conceptions of critical thinking as

thinking that is used to critique arguments, offer justifications, and make judgments about what are the good reasons, or the right answers. (Thayer-Bacon 2000: 127–128)

Alston (2001) reports that her students in a women’s studies class were able to see the flaws in the Cinderella myth that pervades much romantic fiction but in their own romantic relationships still acted as if all failures were the woman’s fault and still accepted the notions of love at first sight and living happily ever after. Students, she writes, should

be able to connect their intellectual critique to a more affective, somatic, and ethical account of making risky choices that have sexist, racist, classist, familial, sexual, or other consequences for themselves and those both near and far… critical thinking that reads arguments, texts, or practices merely on the surface without connections to feeling/desiring/doing or action lacks an ethical depth that should infuse the difference between mere cognitive activity and something we want to call critical thinking. (Alston 2001: 34)

Some critics portray such biases as unfair to women. Thayer-Bacon (1992), for example, has charged modern critical thinking theory with being sexist, on the ground that it separates the self from the object and causes one to lose touch with one’s inner voice, and thus stigmatizes women, who (she asserts) link self to object and listen to their inner voice. Her charge does not imply that women as a group are on average less able than men to analyze and evaluate arguments. Facione (1990c) found no difference by sex in performance on his California Critical Thinking Skills Test. Kuhn (1991: 280–281) found no difference by sex in either the disposition or the competence to engage in argumentative thinking.

The critics propose a variety of remedies for the biases that they allege. In general, they do not propose to eliminate or downplay critical thinking as an educational goal. Rather, they propose to conceptualize critical thinking differently and to change its pedagogy accordingly. Their pedagogical proposals arise logically from their objections. They can be summarized as follows:

• Focus on argument networks with dialectical exchanges reflecting contesting points of view rather than on atomic arguments, so as to develop “strong sense” critical thinking that transcends egocentric and sociocentric biases (Paul 1981, 1984).
• Foster closeness to the subject-matter and feeling connected to others in order to inform a humane democracy (Martin 1992).
• Develop “constructive thinking” as a social activity in a community of physically embodied and socially embedded inquirers with personal voices who value not only reason but also imagination, intuition and emotion (Thayer-Bacon 2000).
• In developing critical thinking in school subjects, treat as important neither skills nor dispositions but opening worlds of meaning (Alston 2001).
• Attend to the development of critical thinking dispositions as well as skills, and adopt the “critical pedagogy” practised and advocated by Freire (1968 [1970]) and hooks (1994) (Dalgleish, Girard, & Davies 2017).

A common thread in these proposals is treatment of critical thinking as a social, interactive, personally engaged activity like that of a quilting bee or a barn-raising (Thayer-Bacon 2000) rather than as an individual, solitary, distanced activity symbolized by Rodin’s The Thinker . One can get a vivid description of education with the former type of goal from the writings of bell hooks (1994, 2010). Critical thinking for her is open-minded dialectical exchange across opposing standpoints and from multiple perspectives, a conception similar to Paul’s “strong sense” critical thinking (Paul 1981). She abandons the structure of domination in the traditional classroom. In an introductory course on black women writers, for example, she assigns students to write an autobiographical paragraph about an early racial memory, then to read it aloud as the others listen, thus affirming the uniqueness and value of each voice and creating a communal awareness of the diversity of the group’s experiences (hooks 1994: 84). Her “engaged pedagogy” is thus similar to the “freedom under guidance” implemented in John Dewey’s Laboratory School of Chicago in the late 1890s and early 1900s. It incorporates the dialogue, anchored instruction, and mentoring that Abrami (2015) found to be most effective in improving critical thinking skills and dispositions.

What is the relationship of critical thinking to problem solving, decision-making, higher-order thinking, creative thinking, and other recognized types of thinking? One’s answer to this question obviously depends on how one defines the terms used in the question. If critical thinking is conceived broadly to cover any careful thinking about any topic for any purpose, then problem solving and decision making will be kinds of critical thinking, if they are done carefully. Historically, ‘critical thinking’ and ‘problem solving’ were two names for the same thing. If critical thinking is conceived more narrowly as consisting solely of appraisal of intellectual products, then it will be disjoint with problem solving and decision making, which are constructive.

Bloom’s taxonomy of educational objectives used the phrase “intellectual abilities and skills” for what had been labeled “critical thinking” by some, “reflective thinking” by Dewey and others, and “problem solving” by still others (Bloom et al. 1956: 38). Thus, the so-called “higher-order thinking skills” at the taxonomy’s top levels of analysis, synthesis and evaluation are just critical thinking skills, although they do not come with general criteria for their assessment (Ennis 1981b). The revised version of Bloom’s taxonomy (Anderson et al. 2001) likewise treats critical thinking as cutting across those types of cognitive process that involve more than remembering (Anderson et al. 2001: 269–270). For details, see the Supplement on History .

As to creative thinking, it overlaps with critical thinking (Bailin 1987, 1988). Thinking about the explanation of some phenomenon or event, as in Ferryboat , requires creative imagination in constructing plausible explanatory hypotheses. Likewise, thinking about a policy question, as in Candidate , requires creativity in coming up with options. Conversely, creativity in any field needs to be balanced by critical appraisal of the draft painting or novel or mathematical theory.

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• The Nature of Critical Thinking: An Outline of Critical Thinking Dispositions and Abilities , by Robert H. Ennis

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• Academic skills

Critical thinking

Critical reading.

You will select sources and read them in different ways depending on their value to your assignment. For example, you might read to:

• get a general overview of the text by skimming through it
• look for specific information or to understand some core concepts by scanning the text
• examine the text in depth and actively ask questions of the source, in order to understand its relevance and reliability for your own research topic.

The last approach is particularly important for any work you submit for assessment.

You should ask yourself:

• Why am I reading this? Are you reading for a presentation, assignment, pre-reading for a lecture, or for finding ideas?
• What do I want to get out of it? Are you looking for specific facts, a general idea of the content, the author's viewpoint?
• What do I already know?
• How will I know when I have read enough?

Select what and how to read

Usually, you can't read all the texts you find on a topic, or even everything suggested on a long reading list. You need to make choices and be selective.

Opt for quality and not quantity, and choose reliable and current sources. We also recommend that you start with an easy text to give you an overview of the topic.

You could choose one of four main reading strategies. These are:

• Predicting : making an educated guess about what the text is about before you start to read.
• Scanning : looking through the text very quickly to look for keywords.
• Skimming : reading the introduction and the first line of each paragraph to work out what the text is about.
• Intensive reading : reading a short section of text slowly and carefully.

When reading and analysing a source closely, use our set of critical thinking questions (PDF) to help you engage critically.

Spreeder is an online tool useful for skim-reading text whilst still gaining an understanding of the context. You can adjust the number of words presented and reading speed of your text, helping you to improve your reading speed.

• Virtual Learning

How to Encourage Critical Thinking Skills While Reading: Effective Strategies

Encouraging critical thinking skills while reading is essential to children’s cognitive development. Critical thinking enables them to engage deeply with a topic or a book, fostering a better understanding of the material. It is a skill that does not develop overnight but can be nurtured through various strategies and experiences.

One effective way to cultivate critical thinking in children is by sharing quality books with them and participating in discussions that facilitate an exchange of ideas and opinions. Through these conversations, children can draw on their existing knowledge, problem-solving abilities, and experiences to expand their understanding of a subject.

Parents and teachers help kids think more deeply about things. They can do this by answering questions that help kids compare different ideas, look at things from different angles, guess what might happen, and develop new solutions.

Importance of Critical Thinking Skills in Reading

Critical thinking helps us understand what we read better. It helps us ask questions and think more deeply about the text. Critical thinking skills can help us analyze, evaluate, and understand what we read.

By incorporating critical thinking, readers can differentiate between facts and opinions, forming their views based on logical reasoning and evidence. This ability is particularly crucial in today’s information abundance, where readers are often exposed to biased or unreliable content. According to Critical Thinking Secrets , using critical thinking in reading allows learners to exercise their judgment in assessing the credibility of the information.

Furthermore, critical thinking promotes creativity and problem-solving skills. Practicing critical thinking allows learners to devise new and innovative ideas to address various challenges. This skill improves academic performance and prepares young minds for future professional endeavors.

Engaging with quality books and participating in thought-provoking discussions can nurture critical thinking abilities in children. Reading Rockets emphasizes the importance of exposing children to texts that challenge their thinking and encourage them to ask questions, fostering the development of critical thinking skills over time.

Teachers also play a significant role in promoting critical thinking in the classroom. Employing various instructional strategies, such as problem-based learning, asking open-ended questions, and providing opportunities for group discussions, can help students cultivate critical thinking habits.

Developing a Reading Environment That Fosters Critical Thinking

Creating a reading environment that promotes critical thinking enables students to engage with texts more deeply and develop essential analytical skills. The following sub-sections outline strategies for choosing thought-provoking materials and encouraging open discussions.

Choosing Thought-Provoking Materials

Selecting suitable reading materials is critical to stimulating critical thinking among students. Teachers should look for texts that:

• Are relevant and relatable to students’ lives and interests
• Present various perspectives and diverse characters
• Pose challenging questions and open-ended problems

By incorporating such texts into the classroom, students can be exposed to new ideas and viewpoints, promoting critical thinking and engagement with the material. For instance, in Eight Instructional Strategies for Promoting Critical Thinking , teachers are advised to choose compelling topics and maintain relevance to foster critical thinking

Encouraging Open Discussions

Fostering an environment where open discussions occur is essential to promoting critical thinking skills while reading. Teachers should:

• Create a culture of inquiry by posing open-ended questions and encouraging students to form opinions and debates
• Facilitate discussions by asking students to explain their thinking processes and share their interpretations of the text
• Respect all opinions and viewpoints, emphasizing that the goal is to learn from each other rather than reach a “correct” answer

Students who feel comfortable participating in discussions are more likely to develop critical thinking skills. The Reading Rockets emphasizes the importance of reading together and engaging in conversations to nurture critical thinking in children.

Active Reading Strategies

Active reading is an essential skill for encouraging critical thinking skills while reading. This involves consciously engaging with the material and connecting with what you know or have read before. This section discusses key strategies that can help you become an active reader.

Annotating and Note-Taking

Annotating the text and taking notes as you read allows you to engage with the material on a deeper level. This process of actively engaging with the text helps you to analyze and retain information more effectively. As you read, it is important to make marginal notes or comments to highlight key points and draw connections between different sections of the material.

Asking Questions While Reading

One important aspect of critical reading is questioning the material. This means not taking everything you read at face value and considering the author’s interpretation and opinion . As you read, develop the habit of asking questions throughout the process, such as:

• What is the author’s main argument?
• What evidence supports this argument?
• How is the information presented in a logical manner?
• What are the possible opposing viewpoints?

By asking questions, you can better understand the author’s viewpoint and the evidence presented, which helps to develop your critical thinking skills.

Summarizing and Paraphrasing

Summarizing and paraphrasing are essential skills for critical reading. Summarizing the material allows you to condense key points and process the information more easily. Paraphrasing, or rephrasing the ideas in your own words, not only helps you better understand the material, but also ensures that you’re accurately interpreting the author’s ideas.

Both summarizing and paraphrasing can enhance your critical thinking skills by compelling you to analyze the text and identify the main ideas and supporting evidence. This way, you can make informed judgments about the content, making your reading more purposeful and engaging.

Developing critical thinking skills while reading literature involves a comprehensive understanding of various literary devices. This section highlights three primary aspects of literary analysis: Recognizing Themes and Patterns, Analyzing Characters and Their Motivations, and Evaluating the Author’s Intent and Perspective.

Recognizing Themes and Patterns

One way to foster critical thinking is through recognizing themes and patterns in the text. Encourage students to identify recurring themes, symbols, and motifs as they read. Additionally, examining the relationships between different elements in the story can help create connections and analyze the overall meaning.

For example, in a story about the struggles of growing up, students might notice patterns in the protagonist’s journey, such as recurring conflicts or milestones. By contemplating these patterns, learners can engage in deeper analysis and interpretation of the text.

Analyzing Characters and Their Motivations

Character analysis is an essential aspect of literary analysis, as understanding characters’ motivations can lead to a thorough comprehension of the narrative. Encourage students to analyze the motives behind each character’s actions, focusing on the factors that drive their decisions.

For instance, in a novel where two characters have differing goals, have students consider why these goals differ and how the characters’ motivations impact the story’s outcome. This exploration can lead to thought-provoking discussions about human behavior, facilitating the development of critical thinking skills.

Evaluating the Author’s Intent and Perspective

Critical thinking is essential to evaluating the author’s intent and perspective. This process involves deciphering the underlying message or purpose of the text and analyzing how the author’s experiences or beliefs may have influenced their writing.

One strategy for accomplishing this is to examine the historical or cultural context in which the work was written. By considering the author’s background, students can better understand the ideas or arguments presented in the text.

For example, if reading a novel set during a significant historical period, like the Civil Rights Movement, understanding the author’s experience can help students analyze narrative elements, enhancing their critical thinking abilities.

Methods to Encourage Critical Thinking Beyond Reading

While reading is essential to developing critical thinking skills, it can be further enhanced by incorporating certain activities in daily routines that promote critical thinking.

Debates and Group Discussions

Debates and group discussions are excellent methods for encouraging critical thinking. By participating in debates or discussions, learners exchange diverse ideas, challenge each other’s reasoning, and evaluate the strength of their arguments. These activities require participants to think and respond quickly, synthesize information, and analyze multiple perspectives.

Teachers and parents can facilitate debates and group discussions by selecting topics that are relevant and related to the subject matter. Promoting respectful dialogue and modeling effective listening skills are also important aspects of setting up successful debates or discussions.

Exploring Other Media Formats

In addition to reading, exploring other media formats like documentaries, podcasts, and videos can help stimulate critical thinking in learners. Different mediums present information in unique ways, providing learners with various perspectives and fostering a more comprehensive understanding of the topic.

Using diverse media formats, individuals can compare and contrast information, question what they know, and further develop their analytical skills. It is essential that educators and parents encourage learners to explore these formats critically, assessing the credibility of the sources and ensuring accuracy in the information consumed.

Assessing Progress and Providing Feedback

Developing critical thinking skills while reading requires continuous assessment and feedback. Monitoring students’ progress in this area and providing constructive feedback can help ensure development and success.

Setting Measurable Goals

Establishing clear, measurable goals for critical thinking is vital for both students and educators. These goals should be specific, achievable, and time-bound. To effectively assess progress, consider using a variety of assessments, such as:

• Classroom discussions
• Reflective writing assignments
• Group projects
• Individual presentations

These different assessment methods can help determine if students are reaching their critical thinking goals and guide educators in adjusting their instruction as needed.

Providing Constructive Feedback

Constructive feedback is essential for students to improve their critical thinking skills. When providing feedback, consider the following guidelines:

• Be specific and focused on the critical thinking aspects of students’ work
• Link feedback directly to the established goals and criteria
• Encourage self-assessment and reflection
• Highlight strengths and areas for improvement
• Offer realistic suggestions for improvement

By implementing these strategies, educators can ensure that students receive the necessary support and guidance to develop their critical thinking skills while reading.

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Philosophy Books

The best books on critical thinking, recommended by nigel warburton.

Thinking from A to Z by Nigel Warburton

Do you know your straw man arguments from your weasel words? Nigel Warburton , Five Books philosophy editor and author of Thinking from A to Z,  selects some of the best books on critical thinking—and explains how they will help us make better-informed decisions and construct more valid arguments.

Interview by Cal Flyn , Deputy Editor

Calling Bullshit: The Art of Skepticism in a Data-Driven World by Carl Bergstrom & Jevin West

Thinking, Fast and Slow by Daniel Kahneman

Factfulness: Ten Reasons We're Wrong About The World — And Why Things Are Better Than You Think by Hans Rosling

Black Box Thinking: The Surprising Truth About Success by Matthew Syed

The Art of Thinking Clearly by Rolf Dobelli

Critical Thinking: Your Guide to Effective Argument, Successful Analysis and Independent Study by Tom Chatfield

1 Calling Bullshit: The Art of Skepticism in a Data-Driven World by Carl Bergstrom & Jevin West

2 thinking, fast and slow by daniel kahneman, 3 factfulness: ten reasons we're wrong about the world — and why things are better than you think by hans rosling, 4 black box thinking: the surprising truth about success by matthew syed, 5 the art of thinking clearly by rolf dobelli, 6 critical thinking: your guide to effective argument, successful analysis and independent study by tom chatfield.

I t’s been just over two years since you explained to us what critical thinking is all about. Could you update us on any books that have come out since we first spoke?

Calling Bullshit by Carl Bergstrom and Jevin West started life as a course at the University of Washington. It is a book—a handbook really—written with the conviction that bullshit, particularly the kind that is circulated on the Internet, is damaging democracy , and that misinformation and disinformation can have very serious consequences. Bullshitters don’t care about truth. But truth is important, and this book shows why. It is focussed on examples from science and medicine, but ranges more widely too. It’s a lively read. It covers not just verbal bullshit, bullshit with statistics (particularly in relation to big data) and about causation, but also has a chapter on bullshit data visualisations that distract from the content they are about, or present that data in misleading ways. Like all good books on critical thinking this one includes some discussion of the psychology of being taken in by misleading contributions to public debate.

In How To Make the World Add Up , Tim Harford gives us ten rules for thinking better about numbers, together with a Golden Rule (‘Be curious’). Anyone who has listened to his long-running radio series More or Less will know how brilliant Tim is at explaining number-based claims – as I read it, I hallucinated Tim’s reassuring, sceptical, reasonable, amused, and  patient voice. He draws on a rich and fascinating range of examples to teach us (gently) how not to be taken in by statistics and poorly supported claims. There is some overlap with Calling Bullshit , but they complement each other. Together they provide an excellent training in how not to be bamboozled by data-based claims.

[end of update. The original interview appears below]

___________________________

We’re here to talk about critical thinking. Before we discuss your book recommendations, I wonder if you would first explain: What exactly is critical thinking, and when should we be using it?

There’s a whole cluster of things that go under the label ‘critical thinking’. There’s what you might call formal logic , the most extreme case of abstractions. For example take the syllogism: if all men are mortal, and Socrates is a man, you can deduce from that structure of arguments that Socrates is mortal. You could put anything in the slots of ‘men,’ ‘Socrates,’ ‘mortal’, and whatever you put in, the argument structure remains valid. If the premises are true, the conclusion must be true. That kind of logic, which can be represented using letters and signs rather than words, has its place. Formal logic is a quasi-mathematical (some would say mathematical) subject.

But that’s just one element of critical thinking. Critical thinking is broader, though it encompasses that. In recent years, it’s been very common to include discussion of cognitive biases—the psychological mistakes we make in reasoning and the tendencies we have to think in certain patterns which don’t give us reliably good results. That’s another aspect: focussing on the cognitive biases is a part of what’s sometimes called ‘informal logic’, the sorts of reasoning errors that people make, which can be described as fallacious. They’re not, strictly speaking, logical fallacies, always. Some of them are simply psychological tendencies that give us unreliable results.

The gambler’s fallacy is a famous one: somebody throwing a die that isn’t loaded has thrown it three times without getting a six, and then imagines that, by some kind of law of averages, the fourth time they’re more likely to get a six, because they haven’t yet got one yet. That’s just a bad kind of reasoning, because each time that you roll the dice, the odds are the same: there’s a one in six chance of throwing a six. There’s no cumulative effect and a dice doesn’t have a memory. But we have this tendency, or certainly gamblers often do, to think that somehow the world will even things out and give you a win if you’ve had a series of losses. That’s a kind of informal reasoning error that many of us make, and there are lots of examples like that.

I wrote a little book called Thinking from A to Z which was meant to name and explain a whole series of moves and mistakes in thinking. I included logic, some cognitive biases, some rhetorical moves, and also (for instance) the topic of pseudo-profundity, whereby people make seemingly deep statements that are in fact shallow. The classical example is to give a seeming paradox—to say, for example ‘knowledge is just a kind of ignorance,’ or ‘virtue is only achieved through vice.’ Actually, that’s just a rhetorical trick, and once you see it, you can generate any number of such ‘profundities’. I suppose that would fall under rhetoric, the art of persuasion: persuading people that you are a deeper thinker than you are. Good reasoning isn’t necessarily the best way to persuade somebody of something, and there are many devious tricks that people use within discussion to persuade people of a particular position. The critical thinker is someone who recognises the moves, can anatomise the arguments, and call them to attention.

So, in answer to your question: critical thinking is not just pure logic . It’s a cluster of things. But its aim is to be clear about what is being argued, what follows from the given evidence and arguments, and to detect any cognitive biases or rhetorical moves that may lead us astray.

Many of the terms you define and illustrate in Thinking from A to Z— things like ‘straw man’ arguments and ‘weasel words’—have been creeping into general usage. I see them thrown around on Twitter. Do you think that our increased familiarity with debate, thanks to platforms like Twitter, has improved people’s critical thinking or made it worse?

I think that improving your critical thinking can be quite difficult. But one of the ways of doing it is to have memorable labels, which can describe the kind of move that somebody’s making, or the kind of reasoning error, or the kind of persuasive technique they’re using.

For example, you can step back from a particular case and see that somebody’s using a ‘weak analogy’. Once you’re familiar with the notion of a weak analogy, it’s a term that you can use to draw attention to a comparison between two things which aren’t actually alike in the respects that somebody is implying they are. Then the next move of a critical thinker would be to point out the respects in which this analogy doesn’t hold, and so demonstrate how poor it is at supporting the conclusion provided. Or, to use the example of weasel words—once you know that concept, it’s easier to spot them and to speak about them.

Social media, particularly Twitter, is quite combative. People are often looking for critical angles on things that people have said, and you’re limited in words. I suspect that labels are probably in use there as a form of shorthand. As long as they’re used in a precise way, this can be a good thing. But remember that responding to someone’s argument with ‘that’s a fallacy’, without actually spelling out what sort of fallacy it is supposed to be, is a form of dismissive rhetoric itself.

There are also a huge number of resources online now which allow people to discover definitions of critical thinking terms. When I first wrote Thinking from A to Z , there weren’t the same number of resources available. I wrote it in ‘A to Z’ form, partly just as a fun device that allows for lots of cross references, but partly because I wanted to draw attention to the names of things. Naming the moves is important.

“People seem to get a kick out of the idea of sharing irrelevant features—it might be a birthday or it might be a hometown—with somebody famous. But so what?”

The process of writing the book improved my critical thinking quite a lot, because I had to think more precisely about what particular terms meant and find examples of them that were unambiguous. That was the hardest thing, to find clear-cut examples of the various moves, to illustrate them. I coined some of the names myself: there’s one in there which is called the ‘Van Gogh fallacy,’ which is the pattern of thought when people say: ‘Well, Van Gogh had red hair, was a bit crazy, was left-handed, was born on the 30th of March, and, what do you know, I share all those things’—which I do happen to do—‘and therefore I must be a great genius too.’

I love that. Well, another title that deals with psychological biases is the first critical thinking book that you want to discuss, Daniel Kahneman’s Thinking Fast and Slow . Why did you choose this one?

This is an international bestseller by the Nobel Prize-winning behavioural economist—although he’s principally a psychologist—Daniel Kahneman. He developed research with Amos Tversky, who unfortunately died young. I think it would have been a co-written book otherwise. It’s a brilliant book that summarizes their psychological research on cognitive biases (or its patterns of thinking) which all of us are prone to, which aren’t reliable.

There is a huge amount of detail in the book. It summarizes a lifetime of research—two lifetimes, really. But Kahneman is very clear about the way he describes patterns of thought: as using either ‘System One’ or ‘System Two.’ System One is the fast, intuitive, emotional response to situations where we jump to a conclusion very quickly. You know: 2 + 2 is 4. You don’t think about it.

System Two is more analytical, conscious, slower, methodical, deliberative. A more logical process, which is much more energy consuming. We stop and think. How would you answer 27 × 17? You’d have to think really hard, and do a calculation using the System Two kind of thinking. The problem is that we rely on this System One—this almost instinctive response to situations—and often come out with bad answers as a result. That’s a framework within which a lot of his analysis is set.

I chose this book because it’s a good read, and it’s a book you can keep coming back to—but also because it’s written by a very important researcher in the area. So it’s got the authority of the person who did the actual psychological research. But it’s got some great descriptions of the phenomena he researches, I think. Anchoring, for instance. Do you know about anchoring?

I think so. Is that when you provide an initial example that shapes future responses? Perhaps you’d better explain it.

That’s more or less it. If you present somebody with an arbitrary number, psychologically, most people seem prone when you ask them a question to move in the direction of that number. For instance, there’s an experiment with judges. They were being asked off the cuff: What would be a good sentence for a particular crime, say shoplifting? Maybe they’d say it would be a six-month sentence for a persistent shoplifter.

But if you prime a judge by giving an anchoring number—if you ask, ‘Should the sentence for shoplifting be more than nine months?’ They’re more like to say on average that the sentence should be eight months than they would have been otherwise. And if you say, ‘Should it be punished by a sentence of longer than three months?’ they’re more likely to come down in the area of five , than they would otherwise.

So the way you phrase a question, by introducing these numbers, you give an anchoring effect. It sways people’s thinking towards that number. If you ask people if Gandhi was older than 114 years old when he died, people give a higher answer than if you just asked them: ‘How old was Gandhi when he died?’

I’ve heard this discussed in the context of charity donations. Asking if people will donate, say, £20 a month returns a higher average pledge than asking for £1 a month.

People use this anchoring technique often with selling wine on a list too. If there’s a higher-priced wine for £75, then somehow people are more drawn to one that costs £40 than they would otherwise have been. If  that was the most expensive one on the menu, they wouldn’t have been drawn to the £40 bottle, but just having seen the higher price, they seem to be drawn to a higher number. This phenomenon occurs in many areas.

And there are so many things that Kahneman covers. There’s the sunk cost fallacy, this tendency that we have when we give our energy, or money, or time to a project—we’re very reluctant to stop, even when it’s irrational to carry on. You see this a lot in descriptions of withdrawal from war situations. We say: ‘We’ve given all those people’s lives, all that money, surely we’re not going to stop this campaign now.’ But it might be the rational thing to do. All that money being thrown there, doesn’t mean that throwing more in that direction will get a good result. It seems that we have a fear of future regret that outweighs everything else. This dominates our thinking.

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What Kahneman emphasizes is that System One thinking produces overconfidence based on what’s often an erroneous assessment of a situation. All of us are subject to these cognitive biases, and that they’re extremely difficult to remove. Kahneman’s a deeply pessimistic thinker in some respects; he recognizes that even after years of studying these phenomena he can’t eliminate them from his own thinking. I interviewed him for a podcast once , and said to him: ‘Surely, if you teach people critical thinking, they can get better at eliminating some of these biases.’ He was not optimistic about that. I’m much more optimistic than him. I don’t know whether he had empirical evidence to back that up, about whether studying critical thinking can increase your thinking abilities. But I was surprised how pessimistic he was.

Interesting.

Unlike some of the other authors that we’re going to discuss . . .

Staying on Kahneman for a moment, you mentioned that he’d won a Nobel Prize, not for his research in psychology per se but for his influence on the field of economics . His and Tversky’s ground-breaking work on the irrationality of human behaviour and thinking forms the spine of a new field.

Let’s look at Hans Rosling’s book next, this is Factfulness . What does it tell us about critical thinking?

Rosling was a Swedish statistician and physician, who, amongst other things, gave some very popular TED talks . His book Factfulness , which was published posthumously—his son and daughter-in-law completed the book—is very optimistic, so completely different in tone from Kahneman’s. But he focuses in a similar way on the ways that people make mistakes.

We make mistakes, classically, in being overly pessimistic about things that are changing in the world. In one of Rosling’s examples he asks what percentage of the world population is living on less than $2 a day. People almost always overestimate that number, and also the direction in which things are moving, and the speed in which they’re moving. Actually, in 1966, half of the world’s population was in extreme poverty by that measure, but by 2017 it was only 9%, so there’s been a dramatic reduction in global poverty. But most people don’t realise this because they don’t focus on the facts, and are possibly influenced by what they may have known about the situation in the 1960s.

If people are asked what percentage of children are vaccinated against common diseases, they almost always underestimate it. The correct answer is a very high proportion, something like 80%. Ask people what the life expectancy for every child born today is, the global average, and again they get it wrong. It’s over 70 now, another surprisingly high figure. What Rosling’s done as a statistician is he’s looked carefully at the way the world is.

“Pessimists tend not to notice changes for the better”

People assume that the present is like the past, so when they’ve learnt something about the state of world poverty or they’ve learnt about health, they often neglect to take a second reading and see the direction in which things are moving, and the speed with which things are changing. That’s the message of this book.

It’s an interesting book; it’s very challenging. It may be over-optimistic. But it does have this startling effect on the readers of challenging widely held assumptions, much as Steven Pinker ‘s The Better Angels of Our Nature has done. It’s a plea to look at the empirical data, and not just assume that you know how things are now. But pessimists tend not to notice changes for the better. In many ways, though clearly not in relation to global warming and climate catastrophe, the statistics are actually very good for humanity.

That’s reassuring.

So this is critical thinking of a numerical, statistical kind. It’s a bit different from the more verbally-based critical thinking that I’ve been involved with. I’m really interested to have my my assumptions challenged, and Factfulness is a very readable book. It’s lively and thought-provoking.

Coming back to what you said about formal logic earlier, statistics is another dense subject which needs specialist training. But it’s one that has a lot in common with critical thinking and a lot of people find very difficult—by which I mean, it’s often counter-intuitive.

One of the big problems for an ordinary reader looking at this kind of book is that we are not equipped to judge the reliability of his sources, and so the reliability of the conclusions that he draws. I think we have to take it on trust and authority and hope that, given the division of intellectual labour, there are other statisticians looking at his work and seeing whether he was actually justified in drawing the conclusions that he drew. He made these sorts of public pronouncements for a long time and responded to critics.

But you’re right that there is a problem here. I believe that most people can equip themselves with tools for critical thinking that work in everyday life. They can learn something about cognitive biases; they can learn about reasoning and rhetoric, and I believe that we can put ourselves as members of a democracy in a position where we think critically about the evidence and arguments that are being presented to us, politically and in the press. That should be open to all intelligent people, I think. It is not a particularly onerous task to equip yourself with a basic tools of thinking clearly.

Absolutely. Next you wanted to talk about Five Books alumnus Matthew Syed ‘s Black Box Thinking .

Yes, quite a different book. Matthew Syed is famous as a former international table tennis player, but—most people probably don’t know this—he has a first-class degree in Philosophy, Politics and Economics (PPE) from Oxford as well.

This book is really interesting. It’s an invitation to think differently about failure. The title, Black Box Thinking, comes from the black boxes which are standardly included in every passenger aircraft, so that if an accident occurs there’s a recording of the flight data and a recording of the audio communications as the plane goes down. When there’s a crash, rescuers always aim to recover these two black boxes. The data is then analysed, the causes of the crash, dissected and scrutinized, and the information shared across the aeronautic industry and beyond.

Obviously, everybody wants to avoid aviation disasters because they’re so costly in terms of loss of human life. They undermine trust in the whole industry. There’s almost always some kind of technical or human error that can be identified, and everybody can learn from particular crashes. This is a model of an industry where, when there is a failure, it’s treated as a very significant learning experience, with the result that airline travel has become a very safe form of transport.

This contrasts with some other areas of human endeavour, such as, sadly, much of healthcare, where the information about failures often isn’t widely shared. This can be for a number of reasons: there may be a fear of litigation—so if a surgeon does something unorthodox, or makes a mistake, and somebody as a result doesn’t survive an operation, the details of exactly what happened on the operating table will not be widely shared, typically, because there is this great fear of legal comeback.

The hierarchical aspects of the medical profession may have a part to play here, too. People higher up in the profession are able to keep a closed book, and not share their mistakes with others, because it might be damaging to their careers for people to know about their errors. There has been, historically anyway, a tendency for medical negligence and medical error, to be kept very quiet, kept hidden, hard to investigate.

“You can never fully confirm an empirical hypothesis, but you can refute one by finding a single piece of evidence against it”

What Matthew Syed is arguing is that we need to take a different attitude to failure and see it as the aviation industry does. He’s particularly interested in this being done within the healthcare field, but more broadly too. It’s an idea that’s come partly from his reading of the philosopher Karl Popper, who described how science progresses not by proving theories true, but by trying to disprove them. You can never fully confirm an empirical hypothesis, but you can refute one by finding a single piece of evidence against it. So, in a sense, the failure of the hypothesis is the way by which science progresses: conjecture followed by refutation, not hypothesis followed by confirmation.

As Syed argues, we progress in all kinds of areas is by making mistakes. He was a superb table-tennis player, and he knows that every mistake that he made was a learning experience, at least potentially, a chance to improve. I think you’d find the same attitude among musicians, or in areas where practitioners are very attentive to the mistakes that they make, and how those failures can teach them in a way that allows them to make a leap forward. The book has a whole range of examples, many from industry, about how different ways of thinking about failure can improve the process and the output of particular practices.

When we think of bringing up kids to succeed, and put emphasis on avoiding failure, we may not be helping them develop. Syed’s argument is that we should make failure a more positive experience, rather than treat it as something that’s terrifying, and always to be shied away from. If you’re trying to achieve success, and you think, ‘I have to achieve that by accumulating other successes,’ perhaps that’s the wrong mindset to achieve success at the higher levels. Perhaps you need to think, ‘Okay, I’m going to make some mistakes, how can I learn from this, how can I share these mistakes, and how can other people learn from them too?’

That’s interesting. In fact, just yesterday I was discussing a book by Atul Gawande, the surgeon and New Yorker writer, called The Checklist Manifesto . In that, Gawande also argues that we should draw from the success of aviation, in that case, the checklists that they run through before take-off and so on, and apply it to other fields like medicine. A system like this is aiming to get rid of human error, and I suppose that’s what critical thinking tries to do, too: rid us of the gremlins in machine.

Well, it’s also acknowledging that when you make an error, it can have disastrous consequence. But you don’t eliminate errors just by pretending they didn’t occur. With the Chernobyl disaster , for instance, there was an initial unwillingness to accept the evidence in front of people’s eyes that a disaster had occurred, combined with a fear of being seen to have messed up. There’s that tendency to think that everything’s going well, a kind of cognitive bias towards optimism and a fear of being responsible for error, but it’s also this unwillingness to see that in certain areas, admission of failure and sharing of the knowledge that mistakes have occurred is the best way to minimize failure in the future.

Very Beckettian . “Fail again. Fail better.”

Absolutely. Well, shall we move onto to Rolf Dobelli’s 2013 book, The Art of Thinking Clearly ?

Yes. This is quite a light book in comparison with the others. It’s really a summary of 99 moves in thinking, some of them psychological, some of them logical, some of them social. What I like about it is that he uses lots of examples. Each of the 99 entries is pretty short, and it’s the kind of book you can dip into. I would think it would be very indigestible to read it from cover to cover, but it’s a book to keep going back to.

I included it because it suggests you can you improve your critical thinking by having labels for things, recognising the moves, but also by having examples which are memorable, through which you can learn. This is an unpretentious book. Dobelli doesn’t claim to be an original thinker himself; he’s a summariser of other people’s thoughts. What he’s done is brought lots of different things together in one place.

Just to give a flavour of the book: he’s got a chapter on the paradox of choice that’s three pages long called ‘Less is More,’ and it’s the very simple idea that if you present somebody with too many choices, rather than freeing them and improving their life and making them happier, it wastes a lot of their time, even destroys the quality of their life.

“If you present somebody with too many choices, it wastes a lot of their time”

I saw an example of this the other day in the supermarket. I bumped into a friend who was standing in front of about 20 different types of coffee. The type that he usually buys wasn’t available, and he was just frozen in this inability to make a decision between all the other brands that were in front of him. If there’d only been one or two, he’d have just gone for one of those quickly.

Dobelli here is summarising the work of psychologist Barry Schwartz who concluded that generally, a broader selection leads people to make poorer decisions for themselves. We think going into the world that what we need is more choice, because that’ll allow us to do the thing we want to do, acquire just the right consumable, or whatever. But perhaps just raising that possibility, the increased number of choices will lead us to make poorer choices than if we had fewer to choose between.

Now, that’s the descriptive bit, but at the end of this short summary, he asks ‘So what can you do about this practically?’ His answer is that you should think carefully about what you want before you look at what’s on offer. Write down the things you think you want and stick to them. Don’t let yourself be swayed by further choices. And don’t get caught up in a kind of irrational perfectionism. This is not profound advice, but it’s stimulating. And that’s typical of the book.

You can flip through these entries and you can take them or leave them. It’s a kind of self-help manual.

Oh, I love that. A critical thinking self-help book .

It really is in that self-help genre, and it’s nicely done. He gets in and out in a couple of pages for each of these. I wouldn’t expect this to be on a philosophy reading list or anything like that, but it’s been an international bestseller. It’s a clever book, and I think it’s definitely worth dipping into and coming back to. The author is not claiming that it is the greatest or most original book in the world; rather, it’s just a book that’s going to help you think clearly. That’s the point.

Absolutely. Let’s move to the final title, Tom Chatfield’s Critical Thinking: Your Guide to Effective Argument, Successful Analysis and Independent Study . We had Tom on Five Books many moons ago to discuss books about computer games . This is rather different. What makes it so good?

Well, this is a different kind of book. I was trying to think about somebody reading this interview who wants to improve their thinking. Of the books I’ve discussed, the ones that are most obviously aimed at that are Black Box Thinking , the Dobelli book, and Tom Chatfield’s Critical Thinking . The others are more descriptive or academic. But this book is quite a contrast with the Dobelli’s. The Art of Thinking Clearly is a very short and punchy book, while Tom’s is longer, and more of a textbook. It includes exercises, with summaries in the margins, it’s printed in textbook format. But that shouldn’t put a general reader off, because I think it’s the kind of thing you can work through yourself and dip into.

It’s clearly written and accessible, but it is designed to be used on courses as well. Chatfield teaches a point, then asks you to test yourself to see whether you’ve learnt the moves that he’s described. It’s very wide-ranging: it includes material on cognitive biases as well as more logical moves and arguments. His aim is not simply to help you think better, and to structure arguments better, but also to write better. It’s the kind of book that you might expect a good university to present to the whole first year intake, across a whole array of courses. But I’m including it here more as a recommendation for the autodidact. If you want to learn to think better: here is a course in the form of a book. You can work through this on your own.

It’s a contrast with the other books as well, so that’s part of my reason for putting it in there, so there’s a range of books on this list.

Definitely. I think Five Books readers, almost by definition, tend towards autodidacticism, so this is a perfect book recommendation. And, finally, to close: do you think that critical thinking is something that more people should make an effort to learn? I suppose the lack of it might help to explain the rise of post-truth politics.

It’s actually quite difficult to teach critical thinking in isolation. In the Open University’s philosophy department, when I worked there writing and designing course materials, we decided in the end to teach critical thinking as it arose in teaching other content: by stepping back from time to time to look at the critical thinking moves being made by philosophers, and the critical thinking moves a good student might make in response to them. Pedagogically, that often works much better than attempting to teach critical thinking as a separate subject in isolation.

This approach can work in scientific areas too. A friend of mine has run a successful university course for zoologists on critical thinking, looking at correlation and cause, particular types of rhetoric that are used in write ups and experiments, and so on, but all the time driven by real examples from zoology. If you’ve got some subject matter, and you’ve got examples of people reasoning, and you can step back from it, I think this approach can work very well.

But in answer to your question, I think that having some basic critical thinking skills is a prerequisite of being a good citizen in a democracy . If you are too easily swayed by rhetoric, weak at analysing arguments and the ways that people use evidence, and prone to all kinds of biases that you are unaware of, how can you engage politically? So yes, all of us can improve our critical thinking skills, and I do believe that that is an aspect of living the examined life that Socrates was so keen we all should do.

December 4, 2020

Five Books aims to keep its book recommendations and interviews up to date. If you are the interviewee and would like to update your choice of books (or even just what you say about them) please email us at [email protected]

Nigel Warburton

Nigel Warburton is a freelance philosopher, writer and host of the podcast Philosophy Bites . Featuring short interviews with the world's best philosophers on bite-size topics, the podcast has been downloaded more than 40 million times. He is also our philosophy editor here at Five Books , where he has been interviewing other philosophers about the best books on a range of philosophy topics since 2013 (you can read all the interviews he's done here: not all are about philosophy). In addition, he's recommended books for us on the best introductions to philosophy , the best critical thinking books, as well as some of the key texts to read in the Western canon . His annual recommendations of the best philosophy books of the year are among our most popular interviews on Five Books . As an author, he is best known for his introductory philosophy books, listed below:

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Critical Thinking: A Simple Guide and Why It’s Important

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Critical Thinking: A Simple Guide and Why It’s Important was originally published on Ivy Exec .

Strong critical thinking skills are crucial for career success, regardless of educational background. It embodies the ability to engage in astute and effective decision-making, lending invaluable dimensions to professional growth.

At its essence, critical thinking is the ability to analyze, evaluate, and synthesize information in a logical and reasoned manner. It’s not merely about accumulating knowledge but harnessing it effectively to make informed decisions and solve complex problems. In the dynamic landscape of modern careers, honing this skill is paramount.

The Impact of Critical Thinking on Your Career

☑ problem-solving mastery.

Visualize critical thinking as the Sherlock Holmes of your career journey. It facilitates swift problem resolution akin to a detective unraveling a mystery. By methodically analyzing situations and deconstructing complexities, critical thinkers emerge as adept problem solvers, rendering them invaluable assets in the workplace.

☑ Refined Decision-Making

Navigating dilemmas in your career path resembles traversing uncertain terrain. Critical thinking acts as a dependable GPS, steering you toward informed decisions. It involves weighing options, evaluating potential outcomes, and confidently choosing the most favorable path forward.

☑ Enhanced Teamwork Dynamics

Within collaborative settings, critical thinkers stand out as proactive contributors. They engage in scrutinizing ideas, proposing enhancements, and fostering meaningful contributions. Consequently, the team evolves into a dynamic hub of ideas, with the critical thinker recognized as the architect behind its success.

☑ Communication Prowess

Effective communication is the cornerstone of professional interactions. Critical thinking enriches communication skills, enabling the clear and logical articulation of ideas. Whether in emails, presentations, or casual conversations, individuals adept in critical thinking exude clarity, earning appreciation for their ability to convey thoughts seamlessly.

☑ Adaptability and Resilience

Perceptive individuals adept in critical thinking display resilience in the face of unforeseen challenges. Instead of succumbing to panic, they assess situations, recalibrate their approaches, and persist in moving forward despite adversity.

☑ Fostering Innovation

Innovation is the lifeblood of progressive organizations, and critical thinking serves as its catalyst. Proficient critical thinkers possess the ability to identify overlooked opportunities, propose inventive solutions, and streamline processes, thereby positioning their organizations at the forefront of innovation.

☑ Confidence Amplification

Critical thinkers exude confidence derived from honing their analytical skills. This self-assurance radiates during job interviews, presentations, and daily interactions, catching the attention of superiors and propelling career advancement.

So, how can one cultivate and harness this invaluable skill?

✅ developing curiosity and inquisitiveness:.

Embrace a curious mindset by questioning the status quo and exploring topics beyond your immediate scope. Cultivate an inquisitive approach to everyday situations. Encourage a habit of asking “why” and “how” to deepen understanding. Curiosity fuels the desire to seek information and alternative perspectives.

✅ Practice Reflection and Self-Awareness:

Engage in reflective thinking by assessing your thoughts, actions, and decisions. Regularly introspect to understand your biases, assumptions, and cognitive processes. Cultivate self-awareness to recognize personal prejudices or cognitive biases that might influence your thinking. This allows for a more objective analysis of situations.

✅ Strengthening Analytical Skills:

Practice breaking down complex problems into manageable components. Analyze each part systematically to understand the whole picture. Develop skills in data analysis, statistics, and logical reasoning. This includes understanding correlation versus causation, interpreting graphs, and evaluating statistical significance.

✅ Engaging in Active Listening and Observation:

Actively listen to diverse viewpoints without immediately forming judgments. Allow others to express their ideas fully before responding. Observe situations attentively, noticing details that others might overlook. This habit enhances your ability to analyze problems more comprehensively.

✅ Encouraging Intellectual Humility and Open-Mindedness:

Foster intellectual humility by acknowledging that you don’t know everything. Be open to learning from others, regardless of their position or expertise. Cultivate open-mindedness by actively seeking out perspectives different from your own. Engage in discussions with people holding diverse opinions to broaden your understanding.

✅ Practicing Problem-Solving and Decision-Making:

Engage in regular problem-solving exercises that challenge you to think creatively and analytically. This can include puzzles, riddles, or real-world scenarios. When making decisions, consciously evaluate available information, consider various alternatives, and anticipate potential outcomes before reaching a conclusion.

✅ Continuous Learning and Exposure to Varied Content:

Read extensively across diverse subjects and formats, exposing yourself to different viewpoints, cultures, and ways of thinking. Engage in courses, workshops, or seminars that stimulate critical thinking skills. Seek out opportunities for learning that challenge your existing beliefs.

✅ Engage in Constructive Disagreement and Debate:

Encourage healthy debates and discussions where differing opinions are respectfully debated.

This practice fosters the ability to defend your viewpoints logically while also being open to changing your perspective based on valid arguments. Embrace disagreement as an opportunity to learn rather than a conflict to win. Engaging in constructive debate sharpens your ability to evaluate and counter-arguments effectively.

✅ Utilize Problem-Based Learning and Real-World Applications:

Engage in problem-based learning activities that simulate real-world challenges. Work on projects or scenarios that require critical thinking skills to develop practical problem-solving approaches. Apply critical thinking in real-life situations whenever possible.

This could involve analyzing news articles, evaluating product reviews, or dissecting marketing strategies to understand their underlying rationale.

In conclusion, critical thinking is the linchpin of a successful career journey. It empowers individuals to navigate complexities, make informed decisions, and innovate in their respective domains. Embracing and honing this skill isn’t just an advantage; it’s a necessity in a world where adaptability and sound judgment reign supreme.

So, as you traverse your career path, remember that the ability to think critically is not just an asset but the differentiator that propels you toward excellence.

Trips to Italy, Israel highlight the benefits of Immersion Vanderbilt

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May 15, 2024, 9:20 AM

More than 20 Vanderbilt engineering students recently visited Italy during their spring break to not only see some iconic structures, but also learn the engineering behind the Pantheon and Venice’s sophisticated floodgates so they could apply that knowledge to future engineering projects of their own.

The trip was part of an inaugural class taught this semester in the Department of Civil and Environmental Engineering . It sought to give the 22 students a deeper understanding of the engineering behind some of Italy’s structures, such as the ancient Pantheon and MOSE project designed to protect the city of Venice from flooding. The MOSE project is an integrated system consisting of rows of mobile gates that uses air pressure to keep water levels in check.

As part of their class assignments, the students worked in groups to design floodgates as well as build and test concrete dome prototypes based on their studies of how the Pantheon was constructed. The class was originally scheduled for 15 students, but instructors increased the number because of interest.

“We wanted to help students understand the history and the beauty of structural engineering with the hope that they will be able to better work with architects to achieve beautiful and structurally sound buildings in their careers,” said Lori Troxel, professor of the practice of civil and environmental engineering and a class instructor.

Read the full story here

Recent excursions to Italy and Israel led by Troxel exemplify a commitment to incorporate experiential learning into the Vanderbilt student experience.

Some students on both trips led by Troxel used the spring break travel to take part in an experiential learning opportunity through an academic degree requirement called Immersion Vanderbilt.

Immersion Vanderbilt was created to provide new ways for students to develop better critical thinking skills and a stronger ability to navigate a changing world. The program steered students toward the travel opportunity while allowing Troxel to teach outside of traditional classroom walls.

“Immersion Vanderbilt encourages faculty to take students out into the world to see firsthand the impact of engineering design. It is a reminder that Vanderbilt values experiences outside the classroom,” Troxel said.

“Immersion Vanderbilt helps reinforce the idea that experiential education adds a significant benefit to the theory and design learned in the classroom,” she added.

For example, students who traveled to Italy with Troxel gained first-hand knowledge that will help them in future careers. Several students on the trip aspire to be civil engineers, and they are going to be designing protections for cities that must adapt to climate change. Some students incorporated their time in Italy into their senior design projects.

Seeing the MOSE flood protection in Venice helped students understand not only the importance of protecting cities, but how difficult it is, Troxel said. She noted that students who traveled to Israel saw how a country with very few water resources was able to become rich in water through desalination and water reuse.

“Immersive experiences help students realize they can use their creativity and engineering skills to provide a better life for people around the world,” Troxel said.

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