what is a limitation of essay test

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Essay test: types, advantages and limitations | statistics.

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After reading this article you will learn about:- 1. Introduction to Essay Test 2. Types of Essay Test 3. Advantages 4. Limitations 5. Suggestions.

Introduction to Essay Test:

The essay tests are still commonly used tools of evaluation, despite the increasingly wider applicability of the short answer and objective type questions.

There are certain outcomes of learning (e.g., organising, summarising, integrating ideas and expressing in one’s own way) which cannot be satisfactorily measured through objective type tests. The importance of essay tests lies in the measurement of such instructional outcomes.

An essay test may give full freedom to the students to write any number of pages. The required response may vary in length. An essay type question requires the pupil to plan his own answer and to explain it in his own words. The pupil exercises considerable freedom to select, organise and present his ideas. Essay type tests provide a better indication of pupil’s real achievement in learning. The answers provide a clue to nature and quality of the pupil’s thought process.

That is, we can assess how the pupil presents his ideas (whether his manner of presentation is coherent, logical and systematic) and how he concludes. In other words, the answer of the pupil reveals the structure, dynamics and functioning of pupil’s mental life.

The essay questions are generally thought to be the traditional type of questions which demand lengthy answers. They are not amenable to objective scoring as they give scope for halo-effect, inter-examiner variability and intra-examiner variability in scoring.

Types of Essay Test:

There can be many types of essay tests:

Some of these are given below with examples from different subjects:

1. Selective Recall.

e.g. What was the religious policy of Akbar?

2. Evaluative Recall.

e.g. Why did the First War of Independence in 1857 fail?

3. Comparison of two things—on a single designated basis.

e.g. Compare the contributions made by Dalton and Bohr to Atomic theory.

4. Comparison of two things—in general.

e.g. Compare Early Vedic Age with the Later Vedic Age.

5. Decision—for or against.

e.g. Which type of examination do you think is more reliable? Oral or Written. Why?

6. Causes or effects.

e.g. Discuss the effects of environmental pollution on our lives.

7. Explanation of the use or exact meaning of some phrase in a passage or a sentence.

e.g., Joint Stock Company is an artificial person. Explain ‘artificial person’ bringing out the concepts of Joint Stock Company.

8. Summary of some unit of the text or of some article.

9. Analysis

e.g. What was the role played by Mahatma Gandhi in India’s freedom struggle?

10. Statement of relationship.

e.g. Why is knowledge of Botany helpful in studying agriculture?

11. Illustration or examples (your own) of principles in science, language, etc.

e.g. Illustrate the correct use of subject-verb position in an interrogative sentence.

12. Classification.

e.g. Classify the following into Physical change and Chemical change with explanation. Water changes to vapour; Sulphuric Acid and Sodium Hydroxide react to produce Sodium Sulphate and Water; Rusting of Iron; Melting of Ice.

13. Application of rules or principles in given situations.

e.g. If you sat halfway between the middle and one end of a sea-saw, would a person sitting on the other end have to be heavier or lighter than you in order to make the sea-saw balance in the middle. Why?

14. Discussion.

e.g. Partnership is a relationship between persons who have agreed to share the profits of a business carried on by all or any of them acting for all. Discuss the essentials of partnership on the basis of this partnership.

15. Criticism—as to the adequacy, correctness, or relevance—of a printed statement or a classmate’s answer to a question on the lesson.

e.g. What is the wrong with the following statement?

The Prime Minister is the sovereign Head of State in India.

16. Outline.

e.g. Outline the steps required in computing the compound interest if the principal amount, rate of interest and time period are given as P, R and T respectively.

17. Reorganization of facts.

e.g. The student is asked to interview some persons and find out their opinion on the role of UN in world peace. In the light of data thus collected he/she can reorganise what is given in the text book.

18. Formulation of questions-problems and questions raised.

e.g. After reading a lesson the pupils are asked to raise related problems- questions.

19. New methods of procedure

e.g. Can you solve this mathematical problem by using another method?

Advantages of the Essay Tests:

1. It is relatively easier to prepare and administer a six-question extended- response essay test than to prepare and administer a comparable 60-item multiple-choice test items.

2. It is the only means that can assess an examinee’s ability to organise and present his ideas in a logical and coherent fashion.

3. It can be successfully employed for practically all the school subjects.

4. Some of the objectives such as ability to organise idea effectively, ability to criticise or justify a statement, ability to interpret, etc., can be best measured by this type of test.

5. Logical thinking and critical reasoning, systematic presentation, etc. can be best developed by this type of test.

6. It helps to induce good study habits such as making outlines and summaries, organising the arguments for and against, etc.

7. The students can show their initiative, the originality of their thought and the fertility of their imagination as they are permitted freedom of response.

8. The responses of the students need not be completely right or wrong. All degrees of comprehensiveness and accuracy are possible.

9. It largely eliminates guessing.

10. They are valuable in testing the functional knowledge and power of expression of the pupil.

Limitations of Essay Tests:

1. One of the serious limitations of the essay tests is that these tests do not give scope for larger sampling of the content. You cannot sample the course content so well with six lengthy essay questions as you can with 60 multiple-choice test items.

2. Such tests encourage selective reading and emphasise cramming.

3. Moreover, scoring may be affected by spelling, good handwriting, coloured ink, neatness, grammar, length of the answer, etc.

4. The long-answer type questions are less valid and less reliable, and as such they have little predictive value.

5. It requires an excessive time on the part of students to write; while assessing, reading essays is very time-consuming and laborious.

6. It can be assessed only by a teacher or competent professionals.

7. Improper and ambiguous wording handicaps both the students and valuers.

8. Mood of the examiner affects the scoring of answer scripts.

9. There is halo effect-biased judgement by previous impressions.

10. The scores may be affected by his personal bias or partiality for a particular point of view, his way of understanding the question, his weightage to different aspect of the answer, favouritism and nepotism, etc.

Thus, the potential disadvantages of essay type questions are :

(i) Poor predictive validity,

(ii) Limited content sampling,

(iii) Scores unreliability, and

(iv) Scoring constraints.

Suggestions for Improving Essay Tests:

The teacher can sometimes, through essay tests, gain improved insight into a student’s abilities, difficulties and ways of thinking and thus have a basis for guiding his/her learning.

(A) White Framing Questions:

1. Give adequate time and thought to the preparation of essay questions, so that they can be re-examined, revised and edited before they are used. This would increase the validity of the test.

2. The item should be so written that it will elicit the type of behaviour the teacher wants to measure. If one is interested in measuring understanding, he should not ask a question that will elicit an opinion; e.g.,

“What do you think of Buddhism in comparison to Jainism?”

3. Use words which themselves give directions e.g. define, illustrate, outline, select, classify, summarise, etc., instead of discuss, comment, explain, etc.

4. Give specific directions to students to elicit the desired response.

5. Indicate clearly the value of the question and the time suggested for answering it.

6. Do not provide optional questions in an essay test because—

(i) It is difficult to construct questions of equal difficulty;

(ii) Students do not have the ability to select those questions which they will answer best;

(iii) A good student may be penalised because he is challenged by the more difficult and complex questions.

7. Prepare and use a relatively large number of questions requiring short answers rather than just a few questions involving long answers.

8. Do not start essay questions with such words as list, who, what, whether. If we begin the questions with such words, they are likely to be short-answer question and not essay questions, as we have defined the term.

9. Adapt the length of the response and complexity of the question and answer to the maturity level of the students.

10. The wording of the questions should be clear and unambiguous.

11. It should be a power test rather than a speed test. Allow a liberal time limit so that the essay test does not become a test of speed in writing.

12. Supply the necessary training to the students in writing essay tests.

13. Questions should be graded from simple to complex so that all the testees can answer atleast a few questions.

14. Essay questions should provide value points and marking schemes.

(B) While Scoring Questions:

1. Prepare a marking scheme, suggesting the best possible answer and the weightage given to the various points of this model answer. Decide in advance which factors will be considered in evaluating an essay response.

2. While assessing the essay response, one must:

a. Use appropriate methods to minimise bias;

b. Pay attention only to the significant and relevant aspects of the answer;

c. Be careful not to let personal idiosyncrasies affect assessment;

d. Apply a uniform standard to all the papers.

3. The examinee’s identity should be concealed from the scorer. By this we can avoid the “halo effect” or “biasness” which may affect the scoring.

4. Check your marking scheme against actual responses.

5. Once the assessment has begun, the standard should not be changed, nor should it vary from paper to paper or reader to reader. Be consistent in your assessment.

6. Grade only one question at a time for all papers. This will help you in minimising the halo effect in becoming thoroughly familiar with just one set of scoring criteria and in concentrating completely on them.

7. The mechanics of expression (legibility, spelling, punctuation, grammar) should be judged separately from what the student writes, i.e. the subject matter content.

8. If possible, have two independent readings of the test and use the average as the final score.

Related Articles:

• Merits and Demerits of Objective Type Test
• Types of Recall Type Test: Simple and Completion | Objective Test

Educational Statistics , Evaluation Tools , Essay Test

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How to Write Limitations of the Study (with examples)

This blog emphasizes the importance of recognizing and effectively writing about limitations in research. It discusses the types of limitations, their significance, and provides guidelines for writing about them, highlighting their role in advancing scholarly research.

Updated on August 24, 2023

No matter how well thought out, every research endeavor encounters challenges. There is simply no way to predict all possible variances throughout the process.

These uncharted boundaries and abrupt constraints are known as limitations in research . Identifying and acknowledging limitations is crucial for conducting rigorous studies. Limitations provide context and shed light on gaps in the prevailing inquiry and literature.

This article explores the importance of recognizing limitations and discusses how to write them effectively. By interpreting limitations in research and considering prevalent examples, we aim to reframe the perception from shameful mistakes to respectable revelations.

What are limitations in research?

In the clearest terms, research limitations are the practical or theoretical shortcomings of a study that are often outside of the researcher’s control . While these weaknesses limit the generalizability of a study’s conclusions, they also present a foundation for future research.

Sometimes limitations arise from tangible circumstances like time and funding constraints, or equipment and participant availability. Other times the rationale is more obscure and buried within the research design. Common types of limitations and their ramifications include:

• Theoretical: limits the scope, depth, or applicability of a study.
• Methodological: limits the quality, quantity, or diversity of the data.
• Empirical: limits the representativeness, validity, or reliability of the data.
• Analytical: limits the accuracy, completeness, or significance of the findings.
• Ethical: limits the access, consent, or confidentiality of the data.

Regardless of how, when, or why they arise, limitations are a natural part of the research process and should never be ignored . Like all other aspects, they are vital in their own purpose.

Why is identifying limitations important?

Whether to seek acceptance or avoid struggle, humans often instinctively hide flaws and mistakes. Merging this thought process into research by attempting to hide limitations, however, is a bad idea. It has the potential to negate the validity of outcomes and damage the reputation of scholars.

By identifying and addressing limitations throughout a project, researchers strengthen their arguments and curtail the chance of peer censure based on overlooked mistakes. Pointing out these flaws shows an understanding of variable limits and a scrupulous research process.

Showing awareness of and taking responsibility for a project’s boundaries and challenges validates the integrity and transparency of a researcher. It further demonstrates the researchers understand the applicable literature and have thoroughly evaluated their chosen research methods.

Presenting limitations also benefits the readers by providing context for research findings. It guides them to interpret the project’s conclusions only within the scope of very specific conditions. By allowing for an appropriate generalization of the findings that is accurately confined by research boundaries and is not too broad, limitations boost a study’s credibility .

Limitations are true assets to the research process. They highlight opportunities for future research. When researchers identify the limitations of their particular approach to a study question, they enable precise transferability and improve chances for reproducibility. 

Simply stating a project’s limitations is not adequate for spurring further research, though. To spark the interest of other researchers, these acknowledgements must come with thorough explanations regarding how the limitations affected the current study and how they can potentially be overcome with amended methods.

How to write limitations

Typically, the information about a study’s limitations is situated either at the beginning of the discussion section to provide context for readers or at the conclusion of the discussion section to acknowledge the need for further research. However, it varies depending upon the target journal or publication guidelines. 

Don’t hide your limitations

It is also important to not bury a limitation in the body of the paper unless it has a unique connection to a topic in that section. If so, it needs to be reiterated with the other limitations or at the conclusion of the discussion section. Wherever it is included in the manuscript, ensure that the limitations section is prominently positioned and clearly introduced.

While maintaining transparency by disclosing limitations means taking a comprehensive approach, it is not necessary to discuss everything that could have potentially gone wrong during the research study. If there is no commitment to investigation in the introduction, it is unnecessary to consider the issue a limitation to the research. Wholly consider the term ‘limitations’ and ask, “Did it significantly change or limit the possible outcomes?” Then, qualify the occurrence as either a limitation to include in the current manuscript or as an idea to note for other projects. 

Writing limitations

Once the limitations are concretely identified and it is decided where they will be included in the paper, researchers are ready for the writing task. Including only what is pertinent, keeping explanations detailed but concise, and employing the following guidelines is key for crafting valuable limitations:

1) Identify and describe the limitations : Clearly introduce the limitation by classifying its form and specifying its origin. For example:

• An unintentional bias encountered during data collection
• An intentional use of unplanned post-hoc data analysis

2) Explain the implications : Describe how the limitation potentially influences the study’s findings and how the validity and generalizability are subsequently impacted. Provide examples and evidence to support claims of the limitations’ effects without making excuses or exaggerating their impact. Overall, be transparent and objective in presenting the limitations, without undermining the significance of the research. 

3) Provide alternative approaches for future studies : Offer specific suggestions for potential improvements or avenues for further investigation. Demonstrate a proactive approach by encouraging future research that addresses the identified gaps and, therefore, expands the knowledge base.

Whether presenting limitations as an individual section within the manuscript or as a subtopic in the discussion area, authors should use clear headings and straightforward language to facilitate readability. There is no need to complicate limitations with jargon, computations, or complex datasets.

Examples of common limitations

Limitations are generally grouped into two categories , methodology and research process .

Methodology limitations

Methodology may include limitations due to:

• Sample size
• Lack of available or reliable data
• Lack of prior research studies on the topic
• Measure used to collect the data
• Self-reported data

The researcher is addressing how the large sample size requires a reassessment of the measures used to collect and analyze the data.

Research process limitations

Limitations during the research process may arise from:

• Access to information
• Longitudinal effects
• Cultural and other biases
• Language fluency
• Time constraints

The author is pointing out that the model’s estimates are based on potentially biased observational studies.

Final thoughts

Successfully proving theories and touting great achievements are only two very narrow goals of scholarly research. The true passion and greatest efforts of researchers comes more in the form of confronting assumptions and exploring the obscure.

In many ways, recognizing and sharing the limitations of a research study both allows for and encourages this type of discovery that continuously pushes research forward. By using limitations to provide a transparent account of the project's boundaries and to contextualize the findings, researchers pave the way for even more robust and impactful research in the future.

Charla Viera, MS

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Essay Type Test: Advantages, Disadvantages, Limitations

• February 9, 2024

In this article, we are going to discuss Essay Type Test: Advantages, Disadvantages, and Limitations.

1. Study Habits

2. reduce guessing, 3. easy to construct, 4.degree of comprehensiveness, 5. logical thinking, 6. creativity, 7. enhance thinking ability:, 8. complex learning, 9. individual differences, limitations or disadvantages of essay type test:, 1. low objectivity, 2. cramming habit, 3. lack of relaibility, 4. selective study, 5. subjectivity of scoring, 6. burden of students, 7. scope of favouritism, 8. time-consuming, 9. low validity, defects of essay-type test from the point of view of the teacher, mathematical question, essay type test.

With the aid of systematization and the creation of a unique composition, students are forced to answer fully to a question or prompt on an essay test. An essay test is designed to evaluate students’ ability to write an argumentative, logical essay.

Advantages Of Essay Type Test

These exams encourage students to develop effective study habits. These exams encourage students to develop effective study habits.

The guesswork can be reduced to a large extent.

Such tests are easier to administer and construct.

This test is helpful to measure all degrees of comprehensiveness and accuracy.

These aid in students’ logical thinking, critical reasoning, and methodical presentation skills development.

Such tests provide an opportunity for the child to show his creativity, originality of thought, fertility of their imagination, etc.

These types of tests are considered to be best for measuring the ability to organize ideas effectively, the ability to criticize or justify a statement, the ability to interpret, etc.

It’s helpful to measure complex learning outcomes.

It’s helpful to determine individual differences.

Defects of the Essay-Type Test as Viewed by Students

The essay-type tests are less objective and so they lack validity.

Essay type of test increases the child’s cramming habit capacity. 

These tests lack the dependability of essay-type tests is low as compared to various multiple-choice questions or objective-type questions.

A student is constrained or bound to study a selective script of his course. He often guesses the questions which may probably have an element of chance from an exam point of view.

The subjectivity of scoring is the most drawback of an essay sort test, which implies that individual likes and loathes play a critical part in the checking.

It puts a lot of pressure on the students. It keeps the student busy and far away from nervous tension.

Partiality is another flaw with essay-sort assessments since instructors tend to award more credit to their top candidates.

It is time-consuming on the part of students and the speed of writing and good writing style consume enough time of students.

It has less content validity.

1-The primary and preeminent point of the educator is the shining victory of all his /her understudies for that reason he tries to cover the constrained and the foremost important contents of the syllabus first and his focus is the maximum number of students to get through the examination.

2. The instruction Programme of the instructor is entirely examination-oriented and the essential guideline for instructing his understudies is given the slightest thought.

3. The educator is compelled to empower his understudies to pack which isn’t a mental strategy for instructing.

4. Since the instructor is judged by the comes about of his understudies so everything gets to be subservient to the examination

5. To show good results sometimes the teacher devotes a good deal of his time to indulging in guesswork which affects his teaching.

In math practice tests, students are tested for different types of questions related to various equations and problem-solving. This also increases quantitative reasoning. This area includes questions on math topics like algebra, geometry, data analysis, and problem-solving.

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The ultimate essay test guide: achieve top grades with ease.

An essay test, a fundamental tool in academic assessment, measures a student's ability to express, argue, and structure their thoughts on a given subject through written words. This test format delves deeper into a student's critical thinking and writing skills unlike other conventional exam types.

What is an Essay Test?

An essay test is a type of assessment in which a student is prompted to respond to a question or a series of questions by writing an essay.

This form of test isn’t merely about checking a student’s recall or memorisation skills , but more about gauging their ability to comprehend a subject, synthesise information, and articulate their understanding effectively.

Types of Essay Tests

Essay tests can be broadly classified into two categories: Restricted Response and Extended Response .

• Restricted Response tests focus on limited aspects, requiring students to provide short, concise answers.
• Extended Response tests demand more comprehensive answers, allowing students to showcase their creativity and analytical skills.

Advantages and Limitations of an Essay Test

Essay tests offer numerous benefits but also have certain limitations. The advantages of an essay test are :

• They allow teachers to evaluate students’ abilities to organise, synthesise, and interpret information.
• They help in developing critical thinking and writing skills among students.
• They provide an opportunity for students to exhibit their knowledge and understanding of a subject in a broader context.

And the limitations of an essay test are :

• They are time-consuming to both take and grade.
• They are subject to scoring inconsistencies due to potential subjective bias.
• They may cause the students who struggle with written expression may face difficulties, and these tests may not accurately reflect the full spectrum of a student’s knowledge or understanding.

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Understanding the Structure of an Essay Test

Essay tests involve a defined structure to ensure organised, coherent, and comprehensive expression of thoughts. Adhering to a specific structure can enhance your ability to answer essay questions effectively .

The 7 Steps of an Essay

Writing an essay test typically involves seven steps :

• Understanding the question
• Brainstorming ideas
• Creating an outline
• Crafting a thesis statement
• Writing the essay body
• Formulating the conclusion
• Revising and editing for clarity and conciseness

The First Sentence in an Essay

The initial sentence of an essay, often termed a hook , plays a crucial role.

It aims to grab the reader’s attention and provoke interest in the essay topic. It should be engaging, and relevant, and set the tone for the rest of the essay .

The 5-Paragraph Essay Format

The 5-paragraph essay format is commonly used in essay tests, providing a clear and organised approach for students to articulate their ideas. In this format, the introduction and the conclusion include 1 paragraph, while the body of the essay includes 3 .

• Introduction : The introduction sets the stage, providing a brief overview of the topic and presenting the thesis statement – the central argument or point.
• Body : The body of the essay contains three paragraphs, each presenting a separate point that supports the thesis statement. Detailed explanations, evidence, and examples are included here to substantiate the points.
• Conclusion : The conclusion reiterates the thesis statement and summarises the main points. It provides a final perspective on the topic, drawing the essay to a close.

How to Prepare for an Essay Test?

Preparing for an essay test demands a structured approach to ensure thorough understanding and effective response. Here are some strategies to make this task more manageable:

#1 Familiarise Yourself with the Terminology Used

Knowledge of key terminologies is essential. Understand the meaning of directives such as “describe”, “compare”, “contrast”, or “analyse”. Each term guides you on what is expected in your essay and helps you to answer the question accurately.

To make it easier, you can take advantage of AI technologies. While preparing for your exam, use similar essay questions as prompts and see how AI understands and evaluates the questions. If you are unfamiliar with AI, you can check out The Best Chat GPT Prompts For Essay Writing .

#2 Review and Revise Past Essays

Take advantage of past essays or essay prompts to review and revise your writing . Analyse your strengths and areas for improvement, paying attention to grammar , structure , and clarity . This process helps you refine your writing skills and identify potential pitfalls to avoid in future tests.

#3 Practice Timed Writing

Simulate test conditions by practising timed writing . Set a specific time limit for each essay question and strive to complete it within that timeframe. This exercise builds your ability to think and write quickly , improving your efficiency during the actual test.

#4 Utilise Mnemonic Techniques

To aid in memorisation and recall of key concepts or arguments, employ mnemonic techniques . These memory aids, such as acronyms, visualisation, or association techniques, can help you retain important information and retrieve it during the test. Practice using mnemonics to reinforce your understanding of critical points.

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Strategies to Pass an Essay Test

Passing an essay test goes beyond understanding the topic; it also requires strategic planning and execution . Below are key strategies that can enhance your performance in an essay test.

• Read the exam paper thoroughly before diving into writing : read the entire exam paper thoroughly. Understand each question’s requirement and make a mental note of the points to be included in each response. This step will help in ensuring that no aspect of the question is overlooked.
• Answer in the First Sentence and Use the Language of the Question : Begin your essay by clearly stating your answer in the first sentence. Use the language of the question to show you are directly addressing the task. This approach ensures that your main argument is understood right from the start.
• Structure Your Essay : Adopt a logical essay structure , typically comprising an introduction, body, and conclusion. This helps in organising your thoughts, making your argument clearer, and enhancing the readability of your essay.
• Answer in Point Form When Running Out of Time : If time is running short, present your answer in point form. This approach allows you to cover more points quickly, ensuring you don’t leave any questions unanswered.
• Write as Legibly as Possible : Your writing should be clear and easy to read. Illegible handwriting could lead to misunderstandings and may negatively impact your grades.
• Number Your Answers : Ensure your answers are correctly numbered. This helps in aligning your responses with the respective questions, making it easier for the examiner to assess your work, and reducing chances of confusion or error
• Time Yourself on Each Question : Time management is crucial in an essay test. Allocate a specific amount of time to each question, taking into account the marks they carry. Ensure you leave ample time for revising and editing your responses. Practising this strategy can prevent last-minute rushes and result in a more polished essay.

About the Author Oğulcan Tezcan is a writer, translator, editor, and an accomplished engineer. Oğulcan is also a keen researcher and digital market analyst, with a particular interest in self-development, productivity, and human behaviour.

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Frequently Asked Questions About Essay Tests

How do you answer an essay question, when taking an essay test what is the first step, what type of test is an essay test, what is the first sentence in an essay, what are the six elements of an essay.

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17.6: What are the benefits of essay tests?

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• Jennfer Kidd, Jamie Kaufman, Peter Baker, Patrick O'Shea, Dwight Allen, & Old Dominion U students
• Old Dominion University

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Learning Objectives

• Understand the benefits of essay questions for both Students and Teachers
• Identify when essays are useful

Introduction

Essays, along with multiple choice, are a very common method of assessment. Essays offer a means completely different than that of multiple choice. When thinking of a means of assessment, the essay along with multiple choice are the two that most come to mind (Schouller).The essay lends itself to specific subjects; for example, a math test would not have an essay question. The essay is more common in the arts, humanities and the social sciences(Scouller). On occasion an essay can be used used in both physical and natural sciences as well(Scouller). As a future history teacher, I will find that essays will be an essential part of my teaching structure.

The Benefits for Students

By utilizing essays as a mean of assessments, teachers are able to better survey what the student has learned. Multiple choice questions, by their very design, can be worked around. The student can guess, and has decent chance of getting the question right, even if they did not know the answer. This blind guessing does not benefit the student at all. In addition, some multiple choices can deceive the student(Moore). Short answers, and their big brother the essay, work in an entirely different way. Essays remove this factor. in a addition, rather than simply recognize the subject matter, the student must recall the material covered. This challenges the student more, and by forcing the student to remember the information needed, causes the student to retain it better. This in turn reinforces understanding(Moore). Scouller adds to this observation, determining that essay assessment "encourages students' development of higher order intellectual skills and the employment of deeper learning approaches; and secondly, allows students to demonstrate their development."

"Essay questions provide more opportunity to communicate ideas. Whereas multiple choice limits the options, an essay allows the student express ideas that would otherwise not be communicated." (Moore)

The Benefits for Teachers

The matter of preparation must also be considered when comparing multiple choice and essays. For multiple choice questions, the instructor must choose several questions that cover the material covered. After doing so, then the teacher has to come up with multiple possible answers. This is much more difficult than one might assume. With the essay question, the teacher will still need to be creative. However, the teacher only has to come up with a topic, and what the student is expected to cover. This saves the teacher time. When grading, the teacher knows what he or she is looking for in the paper, so the time spent reading is not necessarily more. The teacher also benefits from a better understanding of what they are teaching. The process of selecting a good essay question requires some critical thought of its own, which reflects onto the teacher(Moore).

Multiple Choice. True or False. Short Answer. Essay. All are forms of assessment. All have their pros and cons. For some, they are better suited for particular subjects. Others, not so much. Some students may even find essays to be easier. It is vital to understand when it is best to utilize the essay. Obviously for teachers of younger students, essays are not as useful. However, as the age of the student increase, the importance of the essay follows suit. That essays are utilized in essential exams such as the SAT, SOLs and in our case the PRAXIS demonstrates how important essays are. However, what it ultimately comes down to is what the teacher feels what will best assess what has been covered.

Exercise \(\PageIndex{1}\)

1)What Subject would most benefit from essays?

B: Mathematics for the Liberal Arts

C: Survey of American Literature

2)What is an advantage of essay assessment for the student?

A) They allow for better expression

B) There is little probability for randomness

C) The time taken is less overall

D) A & B

3)What is NOT a benefit of essay assessment for the teacher

A)They help the instructor better understand the subject

B)They remove some the work required for multiple choice

C)The time spent on preparation is less

D) There is no noticeable benefit.

4)Issac is a teacher making up a test. The test will have multiple sections: Short answer, multiple choice, and an essay. What subject does Issac MOST LIKELY teach?

References Cited

1)Moore, S.(2008) Interview with Scott Moore, Professor at Old Dominion University

2)Scouller, K. (1998). The influence of assessment method on students' learning approaches: multiple Choice question examination versus assignment essay. Higher Education 35(4), pp. 453–472

• Educational Assessment

Advantages and Disadvantages of Different Types of Test Questions

• October 23, 2018
• Maryellen Weimer, PhD

It’s good to regularly review the advantages and disadvantages of the most commonly used test questions and the test banks that now frequently provide them.

Multiple-choice questions

• Quick and easy to score, by hand or electronically
• Can be written so that they test a wide range of higher-order thinking skills
• Can cover lots of content areas on a single exam and still be answered in a class period

Disadvantages

• Often test literacy skills: “if the student reads the question carefully, the answer is easy to recognize even if the student knows little about the subject” (p. 194)
• Provide unprepared students the opportunity to guess, and with guesses that are right, they get credit for things they don’t know
• Expose students to misinformation that can influence subsequent thinking about the content
• Take time and skill to construct (especially good questions)

True-false questions

• Quick and easy to score
• Considered to be “one of the most unreliable forms of assessment” (p. 195)
• Often written so that most of the statement is true save one small, often trivial bit of information that then makes the whole statement untrue
• Encourage guessing, and reward for correct guesses

Short-answer questions

• Quick and easy to grade
• Quick and easy to write
• Encourage students to memorize terms and details, so that their understanding of the content remains superficial

Essay questions

• Offer students an opportunity to demonstrate knowledge, skills, and abilities in a variety of ways
• Can be used to develop student writing skills, particularly the ability to formulate arguments supported with reasoning and evidence
• Require extensive time to grade
• Encourage use of subjective criteria when assessing answers
• If used in class, necessitate quick composition without time for planning or revision, which can result in poor-quality writing

Questions provided by test banks

• Save instructors the time and energy involved in writing test questions
• Use the terms and methods that are used in the book
• Rarely involve analysis, synthesis, application, or evaluation (cross-discipline research documents that approximately 85 percent of the questions in test banks test recall)
• Limit the scope of the exam to text content; if used extensively, may lead students to conclude that the material covered in class is unimportant and irrelevant

We tend to think that these are the only test question options, but there are some interesting variations. The article that promoted this review proposes one: Start with a question, and revise it until it can be answered with one word or a short phrase. Do not list any answer options for that single question, but attach to the exam an alphabetized list of answers. Students select answers from that list. Some of the answers provided may be used more than once, some may not be used, and there are more answers listed than questions. It’s a ratcheted-up version of matching. The approach makes the test more challenging and decreases the chance of getting an answer correct by guessing.

Remember, students do need to be introduced to any new or altered question format before they encounter it on an exam.

Editor’s note: The list of advantages and disadvantages comes in part from the article referenced here. It also cites research evidence relevant to some of these advantages and disadvantages.

Reference: McAllister, D., and Guidice, R.M. (2012). This is only a test: A machine-graded improvement to the multiple-choice and true-false examination. Teaching in Higher Education, 17 (2), 193-207.

Reprinted from The Teaching Professor, 28.3 (2014): 8. © Magna Publications. All rights reserved.

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Essay Tests

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TIP Sheet HOW TO TAKE ESSAY TESTS

There are basically two types of exams:

Objective - requires answers of a word or short phrase, or the selection of an answer from several available choices that are provided on the test . Essay - requires answers to be written out at some length. The student functions as the source of information.

An essay exam requires you to see the significance and meaning of what you know. It tests your knowledge and understanding of the subject and your skill in reading and writing. To be successful on an essay exam, you must:

• Prove immediately that you know the material.
• Make your meaning unmistakably clear.
• Employ a reasonable organization and show sufficient thought development.
• Make every word count.
• Be specific.
• Use your own voice and style.

When you are writing an essay as part of an exam, all this must be done within what amounts to a first draft written in a very limited amount of time. As with all writing, if you think of your essay as being produced in three stages, you can tackle the test in an organized fashion. The three stages are pre-writing, writing, and revision. Suggestions for each of these stages follow.

The last section addresses preparation for essay exams. PRE-WRITING

Your first impulse in a writing exam is probably to read the question and start writing immediately, especially when you see those seconds ticking away on the clock. RESIST THAT IMPULSE! You can't successfully address the subject until you know precisely what you're required to do, you understand and have thought about the subject, and you are organized in how you approach the specific points you wish to make in your answer. 1.  Understanding what to do:

• When you get your copy of the exam, read through to make sure you understand what is expected of you. FOLLOW THE INSTRUCTIONS EXACTLY!
• Underline or circle key words that direct the approach your answer should take. Some of the most common key words are:

Agree/Disagree : State your position and support it with facts Comment or Evaluate: State your position and support it with facts, discussing the issue and its merits. Analyze : Break down into all the parts or divisions looking at the relationships between them. Compare/Contrast : Show differences and similarities. Describe/Discuss : Examine in detail. Explain : Tell why something is as it is. Illustrate : Give examples and relate them to the statement in question. Prove/Defend : Demonstrate why something is true. Interpret : Explain the significance or meaning of something. List/State : Make a list of points or facts. Summarize : Hit the high points.

2.  Understanding the subject

• When you are confident that you understand the instructions, direct your attention to the topic.
• Collect your ideas.
• Formulate a thesis. Make sure it is a strong, concise statement that specifically addresses the question.
• Think of as many specific details and facts as you can that support the thesis.

3.  Getting organized

• Jot your ideas down on paper, in very brief format.
• Evaluate your ideas in light of the question. Ask yourself repeatedly: "Does this apply to the question I'm supposed to answer?" Select only those ideas most relevant to your purpose.
• Number your ideas in order of appropriate sequence (first step to last step, most important to least important, etc.)

1.  Remember your thesis. Now stick to it, referring back to it periodically throughout your essay. This gives your essay unity and coherence, and helps insure that you are not digressing. 2.  Write in an orderly fashion. If you suddenly think of a new point, jot it down in a margin or on scratch paper until you find an appropriate place for it. Don't just put it into the middle of what you were writing. 3. Avoid:

• Repeating, in other words, what you have already said.
• Digressing into material that does not answer the question.
• Language that is too broad or general. Be specific.
• Bluffing. This far too common practice of using elegant but empty language to conceal ignorance or lack of effort rarely works, and often irritates the reader(s).
• Write as legibly as you can. If you want, write on every other line so you have room to add later. When you want to cross something off, simply draw a straight line through it. This is much better than scribbling out an entire passage.
• If you run out of time, simply write "Ran out of time" at the close of the essay. This is much better than adding a hurriedly tacked on, and possibly incoherent, conclusion.

Essay examinations are difficult because of the time pressures, yet you should always try to leave a few minutes at the end to proofread your essay. 1.  Ask yourself, before you hand in the essay:

• Did I provide the information requested? That is, did I "explain" or "define" as the directions asked?
• Is the answer simply, clearly, and logically organized?
• Do I stick to my thesis statement? Is there unnecessary information in here?
• Did I proofread to check content and/or mechanical errors?

2.  Proofreading:

• Gives you a chance to catch and correct errors in content.
• Gives you a chance to correct your mechanical errors.
• Allows you to add material that may have occurred to you after writing the essay.

3.  You should proofread for:

• Complete sentences (watch for fragments, comma-splices, and run-ons).
• Words omitted, or one word used when you meant another.
• Logical transitions between sentences and paragraphs.
• Unnecessary repetition of words or ideas.
• Spelling errors.

3.  Essay type tests depend a great deal on your basic writing skills - organization, punctuation, grammar, and spelling. If your answer is not clearly written, your instructor won't be able to find it! Here are some basic guidelines to keep in mind as you take an essay test:

• Read the directions carefully! Read every part of the directions!
• Give yourself time to answer each question. Quickly look over the entire exam and budget your time per question accordingly.
• Above all, stay calm. You are being asked to show competence, not perfection.
• If you are not too sure about one question, leave it and go back.
• When given a choice, answer the questions you know best.
• State your points and support ideas clearly - don't make the instructor have to look for them.
• Go back to check and proofread all of your answers.

PREPARING FOR ESSAY EXAMS

WRITING A SUCCESSFUL ESSAY EXAM BEGINS ON DAY ONE 1.  Study regularly as you go along.

• Take careful lecture notes.
• Read all material when assigned.
• Become familiar with vocabulary.
• Keep a study list of all main ideas.

2.  Final preparation

• Review lecture notes and reading material.
• Find a classmate or friend willing to talk over key ideas and implications.
• Try to anticipate questions . This is very important!  Use your lecture notes to zero in on points that the instructor emphasized.
• Think through the material and write up the best possible essay questions you can.
• Then answer those questions.
• Pinpoint key points that you would like to make when answering each question.
• Put your answer into outline form or write it out completely.
• For each potential test question, use mnemonics or other memory techniques to move the information to your long-term memory for the exam.
• Create a list of the clue words for each point you wish to make.
• Create a mnemonic device to memorize those points.

3.  Come to the exam confident that you have something specific to say on all possible topics. KEY WORDS COMMONLY FOUND ON ESSAY EXAMS

Compare: Look for qualities or characteristics that resemble each other. Emphasize similarities among them, but in some cases also mention differences.

Contrast: Stress the dissimilarities, differences, or unlikenesses of things, qualities, events, or problems.

Criticize: Express your judgement about the merit or truth of the factors or views mentioned. Give the results of your analysis of these factors, discussing their limitations and good points.

Define: Give concise, clear, and authoritative meanings. Don't give details, but make sure to give the limits of the definitions. Show how the thing you are defining differs from things in other classes.

Describe: Recount, characterize, sketch, or relate in sequence or story form.

Diagram: Give a drawing, chart, plan, or graphic answer. Usually you should label a diagram. In some cases, add a brief explanation or description.

Discuss: Examine, analyze carefully, and give reasons pro and con. Be complete, and give details.

Enumerate: Write in list or outline form, giving points concisely one by one.

Evaluate: Carefully appraise the problem, citing both advantages and limitations. Emphasize the appraisal of authorities and, to lesser degree, your personal evaluation.

Explain: Clarify, interpret, and spell out the material you present. Give reasons for differences of opinion or of results, and try to analyze causes.

Illustrate: Use a figure, picture, diagram, or concrete example to explain or clarify a problem.

Interpret: Translate, give examples of, solve, or comment on, a subject, usually giving your judgment about it.

Justify: Prove or give reasons for decisions or conclusions, taking pains to be convincing.

List: As in "enumerate," write an itemized series of concise statements.

Outline: Organize a description under main points and subordinate points, omitting minor details and stressing the arrangement or classification of things.

Prove: Establish that something is true by citing factual evidence or giving clear logical reasons.

Relate: Show how things are related to, or connected with, each other or how one causes another, or is like another.

Review: Examine a subject critically, analyzing and commenting on the important statements to be made about it.

Sketch: means "break down into its component parts."

State: Present the main points in brief, clear sequence, usually omitting details, illustrations, or examples.

Summarize: Give the main points or facts in condensed form, like the summary of a chapter, omitting details and illustrations.

Trace: In narrative form describe progress, development, or historical events from some point of origin.

Identify or characterize: means "distinguish this term, or this person from all others that are similar." Both are clear injunctions to be as specific as possible.

Illustrate or exemplify: means "giving examples," showing thereby, rather than by definition, that you understand the concept. TRANSITIONAL WORDS AND PHRASES

To achieve unity and coherence, writers use transitional words and phrases. Transitional expressions clarify the relationships between clauses, sentences, and paragraphs, helping guide the readers along. The following is a partial list of transitional expressions.

To Add or Show Sequence: again, also, and, and then, besides, equally important, finally, first, further, furthermore, in addition, in the first place, last, moreover, next, second, still, too

To Compare: also, in the same way, likewise, similarly

To Contrast: although, and yet, but, but at the same time, despite, even so, even though, for all that, however, in contrast, in spite of, nevertheless, notwithstanding, on the contrary, on the other hand, regardless, sill, though, whereas, yet

To Give Examples or Intensify: after all, an illustration of, even, for example, for instance, indeed, in fact, it is true, of course, specifically, that is, to illustrate, truly

To Indicate Place: above, adjacent to, below, elsewhere, farther on, here, near, nearby, on the other side, opposite to, there, to the east, to the left

To Indicate Time: after a while, afterward, as long as, as soon as, at last, at length, at that time, before, earlier, formerly, immediately, in the meantime, in the past, lately, later, meanwhile, now, presently, shortly, simultaneously, since, so far, soon, subsequently, then, thereafter, until, until now, when

To Repeat Summarize or Conclude: all in all, altogether, as has been said, in brief, in conclusion in other words, in particular, in short, in simpler terms, in summary, on the whole,that is, therefore, to put it differently, to summarize

To Show Cause or Effect: accordingly, as a result, because, consequently, for this purpose, hence, otherwise, since, then, therefore, thereupon, this, to this end, with this object.

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For questions or information:

• Choosing between Objective and Subjective Test Items

Multiple-Choice Test Items

True-false test items, matching test items, completion test items, essay test items, problem solving test items, performance test items.

• Two Methods for Assessing Test Item Quality
• Assistance Offered by The Center for Innovation in Teaching and Learning (CITL)
• References for Further Reading

I. Choosing Between Objective and Subjective Test Items

There are two general categories of test items: (1) objective items which require students to select the correct response from several alternatives or to supply a word or short phrase to answer a question or complete a statement; and (2) subjective or essay items which permit the student to organize and present an original answer. Objective items include multiple-choice, true-false, matching and completion, while subjective items include short-answer essay, extended-response essay, problem solving and performance test items. For some instructional purposes one or the other item types may prove more efficient and appropriate. To begin out discussion of the relative merits of each type of test item, test your knowledge of these two item types by answering the following questions.

Quiz Answers

1 Sax, G., & Collet, L. S. (1968). An empirical comparison of the effects of recall and multiple-choice tests on student achievement. J ournal of Educational Measurement, 5 (2), 169–173. doi:10.1111/j.1745-3984.1968.tb00622.x

Paterson, D. G. (1926). Do new and old type examinations measure different mental functions? School and Society, 24 , 246–248.

When to Use Essay or Objective Tests

Essay tests are especially appropriate when:

• the group to be tested is small and the test is not to be reused.
• you wish to encourage and reward the development of student skill in writing.
• you are more interested in exploring the student's attitudes than in measuring his/her achievement.
• you are more confident of your ability as a critical and fair reader than as an imaginative writer of good objective test items.

Objective tests are especially appropriate when:

• the group to be tested is large and the test may be reused.
• highly reliable test scores must be obtained as efficiently as possible.
• impartiality of evaluation, absolute fairness, and freedom from possible test scoring influences (e.g., fatigue, lack of anonymity) are essential.
• you are more confident of your ability to express objective test items clearly than of your ability to judge essay test answers correctly.
• there is more pressure for speedy reporting of scores than for speedy test preparation.

Either essay or objective tests can be used to:

• measure almost any important educational achievement a written test can measure.
• test understanding and ability to apply principles.
• test ability to think critically.
• test ability to solve problems.
• test ability to select relevant facts and principles and to integrate them toward the solution of complex problems. 

In addition to the preceding suggestions, it is important to realize that certain item types are  better suited  than others for measuring particular learning objectives. For example, learning objectives requiring the student  to demonstrate  or  to show , may be better measured by performance test items, whereas objectives requiring the student  to explain  or  to describe  may be better measured by essay test items. The matching of learning objective expectations with certain item types can help you select an appropriate kind of test item for your classroom exam as well as provide a higher degree of test validity (i.e., testing what is supposed to be tested). To further illustrate, several sample learning objectives and appropriate test items are provided on the following page.

After you have decided to use either an objective, essay or both objective and essay exam, the next step is to select the kind(s) of objective or essay item that you wish to include on the exam. To help you make such a choice, the different kinds of objective and essay items are presented in the following section. The various kinds of items are briefly described and compared to one another in terms of their advantages and limitations for use. Also presented is a set of general suggestions for the construction of each item variation. 

II. Suggestions for Using and Writing Test Items

The multiple-choice item consists of two parts: (a) the stem, which identifies the question or problem and (b) the response alternatives. Students are asked to select the one alternative that best completes the statement or answers the question. For example:

Sample Multiple-Choice Item

*correct response

Advantages in Using Multiple-Choice Items

Multiple-choice items can provide...

• versatility in measuring all levels of cognitive ability.
• highly reliable test scores.
• scoring efficiency and accuracy.
• objective measurement of student achievement or ability.
• a wide sampling of content or objectives.
• a reduced guessing factor when compared to true-false items.
• different response alternatives which can provide diagnostic feedback.

Limitations in Using Multiple-Choice Items

Multiple-choice items...

• are difficult and time consuming to construct.
• lead an instructor to favor simple recall of facts.
• place a high degree of dependence on the student's reading ability and instructor's writing ability.

Suggestions For Writing Multiple-Choice Test Items

Item alternatives.

13. Use at least four alternatives for each item to lower the probability of getting the item correct by guessing.

14. Randomly distribute the correct response among the alternative positions throughout the test having approximately the same proportion of alternatives a, b, c, d and e as the correct response.

15. Use the alternatives "none of the above" and "all of the above" sparingly. When used, such alternatives should occasionally be used as the correct response.

A true-false item can be written in one of three forms: simple, complex, or compound. Answers can consist of only two choices (simple), more than two choices (complex), or two choices plus a conditional completion response (compound). An example of each type of true-false item follows:

Sample True-False Item: Simple

Sample true-false item: complex, sample true-false item: compound, advantages in using true-false items.

True-False items can provide...

• the widest sampling of content or objectives per unit of testing time.
• an objective measurement of student achievement or ability.

Limitations In Using True-False Items

True-false items...

• incorporate an extremely high guessing factor. For simple true-false items, each student has a 50/50 chance of correctly answering the item without any knowledge of the item's content.
• can often lead an instructor to write ambiguous statements due to the difficulty of writing statements which are unequivocally true or false.
• do not discriminate between students of varying ability as well as other item types.
• can often include more irrelevant clues than do other item types.
• can often lead an instructor to favor testing of trivial knowledge.

Suggestions For Writing True-False Test Items

In general, matching items consist of a column of stimuli presented on the left side of the exam page and a column of responses placed on the right side of the page. Students are required to match the response associated with a given stimulus. For example:

Sample Matching Test Item

Advantages in using matching items.

Matching items...

• require short periods of reading and response time, allowing you to cover more content.
• provide objective measurement of student achievement or ability.
• provide highly reliable test scores.
• provide scoring efficiency and accuracy.

Limitations in Using Matching Items

• have difficulty measuring learning objectives requiring more than simple recall of information.
• are difficult to construct due to the problem of selecting a common set of stimuli and responses.

Suggestions for Writing Matching Test Items

5.  Keep matching items brief, limiting the list of stimuli to under 10.

6.  Include more responses than stimuli to help prevent answering through the process of elimination.

7.  When possible, reduce the amount of reading time by including only short phrases or single words in the response list.

The completion item requires the student to answer a question or to finish an incomplete statement by filling in a blank with the correct word or phrase. For example,

Sample Completion Item

According to Freud, personality is made up of three major systems, the _________, the ________ and the ________.

Advantages in Using Completion Items

Completion items...

• can provide a wide sampling of content.
• can efficiently measure lower levels of cognitive ability.
• can minimize guessing as compared to multiple-choice or true-false items.
• can usually provide an objective measure of student achievement or ability.

Limitations of Using Completion Items

• are difficult to construct so that the desired response is clearly indicated.
• are more time consuming to score when compared to multiple-choice or true-false items.
• are more difficult to score since more than one answer may have to be considered correct if the item was not properly prepared.

Suggestions for Writing Completion Test Items

7.  Avoid lifting statements directly from the text, lecture or other sources.

8.  Limit the required response to a single word or phrase.

The essay test is probably the most popular of all types of teacher-made tests. In general, a classroom essay test consists of a small number of questions to which the student is expected to demonstrate his/her ability to (a) recall factual knowledge, (b) organize this knowledge and (c) present the knowledge in a logical, integrated answer to the question. An essay test item can be classified as either an extended-response essay item or a short-answer essay item. The latter calls for a more restricted or limited answer in terms of form or scope. An example of each type of essay item follows.

Sample Extended-Response Essay Item

Explain the difference between the S-R (Stimulus-Response) and the S-O-R (Stimulus-Organism-Response) theories of personality. Include in your answer (a) brief descriptions of both theories, (b) supporters of both theories and (c) research methods used to study each of the two theories. (10 pts.  20 minutes)

Sample Short-Answer Essay Item

Identify research methods used to study the S-R (Stimulus-Response) and S-O-R (Stimulus-Organism-Response) theories of personality. (5 pts.  10 minutes)

Advantages In Using Essay Items

Essay items...

• are easier and less time consuming to construct than are most other item types.
• provide a means for testing student's ability to compose an answer and present it in a logical manner.
• can efficiently measure higher order cognitive objectives (e.g., analysis, synthesis, evaluation).

Limitations In Using Essay Items

• cannot measure a large amount of content or objectives.
• generally provide low test and test scorer reliability.
• require an extensive amount of instructor's time to read and grade.
• generally do not provide an objective measure of student achievement or ability (subject to bias on the part of the grader).

Suggestions for Writing Essay Test Items

4.  Ask questions that will elicit responses on which experts could agree that one answer is better than another.

5.  Avoid giving the student a choice among optional items as this greatly reduces the reliability of the test.

6.  It is generally recommended for classroom examinations to administer several short-answer items rather than only one or two extended-response items.

Suggestions for Scoring Essay Items

Examples essay item and grading models.

"Americans are a mixed-up people with no sense of ethical values. Everyone knows that baseball is far less necessary than food and steel, yet they pay ball players a lot more than farmers and steelworkers."

WHY? Use 3-4 sentences to indicate how an economist would explain the above situation.

Analytical Scoring

Global quality.

Assign scores or grades on the overall quality of the written response as compared to an ideal answer. Or, compare the overall quality of a response to other student responses by sorting the papers into three stacks:

Read and sort each stack again divide into three more stacks

In total, nine discriminations can be used to assign test grades in this manner. The number of stacks or discriminations can vary to meet your needs.

• Try not to allow factors which are irrelevant to the learning outcomes being measured affect your grading (i.e., handwriting, spelling, neatness).
• Read and grade all class answers to one item before going on to the next item.
• Read and grade the answers without looking at the students' names to avoid possible preferential treatment.
• Occasionally shuffle papers during the reading of answers to help avoid any systematic order effects (i.e., Sally's "B" work always followed Jim's "A" work thus it looked more like "C" work).
• When possible, ask another instructor to read and grade your students' responses.

Another form of a subjective test item is the problem solving or computational exam question. Such items present the student with a problem situation or task and require a demonstration of work procedures and a correct solution, or just a correct solution. This kind of test item is classified as a subjective type of item due to the procedures used to score item responses. Instructors can assign full or partial credit to either correct or incorrect solutions depending on the quality and kind of work procedures presented. An example of a problem solving test item follows.

Example Problem Solving Test Item

It was calculated that 75 men could complete a strip on a new highway in 70 days. When work was scheduled to commence, it was found necessary to send 25 men on another road project. How many days longer will it take to complete the strip? Show your work for full or partial credit.

Advantages In Using Problem Solving Items

Problem solving items...

• minimize guessing by requiring the students to provide an original response rather than to select from several alternatives.
• are easier to construct than are multiple-choice or matching items.
• can most appropriately measure learning objectives which focus on the ability to apply skills or knowledge in the solution of problems.
• can measure an extensive amount of content or objectives.

Limitations in Using Problem Solving Items

• require an extensive amount of instructor time to read and grade.
• generally do not provide an objective measure of student achievement or ability (subject to bias on the part of the grader when partial credit is given).

Suggestions For Writing Problem Solving Test Items

6.  Ask questions that elicit responses on which experts could agree that one solution and one or more work procedures are better than others.

7.  Work through each problem before classroom administration to double-check accuracy.

A performance test item is designed to assess the ability of a student to perform correctly in a simulated situation (i.e., a situation in which the student will be ultimately expected to apply his/her learning). The concept of simulation is central in performance testing; a performance test will simulate to some degree a real life situation to accomplish the assessment. In theory, a performance test could be constructed for any skill and real life situation. In practice, most performance tests have been developed for the assessment of vocational, managerial, administrative, leadership, communication, interpersonal and physical education skills in various simulated situations. An illustrative example of a performance test item is provided below.

Sample Performance Test Item

Assume that some of the instructional objectives of an urban planning course include the development of the student's ability to effectively use the principles covered in the course in various "real life" situations common for an urban planning professional. A performance test item could measure this development by presenting the student with a specific situation which represents a "real life" situation. For example,

An urban planning board makes a last minute request for the professional to act as consultant and critique a written proposal which is to be considered in a board meeting that very evening. The professional arrives before the meeting and has one hour to analyze the written proposal and prepare his critique. The critique presentation is then made verbally during the board meeting; reactions of members of the board or the audience include requests for explanation of specific points or informed attacks on the positions taken by the professional.

The performance test designed to simulate this situation would require that the student to be tested role play the professional's part, while students or faculty act the other roles in the situation. Various aspects of the "professional's" performance would then be observed and rated by several judges with the necessary background. The ratings could then be used both to provide the student with a diagnosis of his/her strengths and weaknesses and to contribute to an overall summary evaluation of the student's abilities.

Advantages In Using Performance Test Items

Performance test items...

• can most appropriately measure learning objectives which focus on the ability of the students to apply skills or knowledge in real life situations.
• usually provide a degree of test validity not possible with standard paper and pencil test items.
• are useful for measuring learning objectives in the psychomotor domain.

Limitations In Using Performance Test Items

• are difficult and time consuming to construct.
• are primarily used for testing students individually and not for testing groups. Consequently, they are relatively costly, time consuming, and inconvenient forms of testing.
• generally do not provide an objective measure of student achievement or ability (subject to bias on the part of the observer/grader).

Suggestions For Writing Performance Test Items

• Prepare items that elicit the type of behavior you want to measure.
• Clearly identify and explain the simulated situation to the student.
• Make the simulated situation as "life-like" as possible.
• Provide directions which clearly inform the students of the type of response called for.
• When appropriate, clearly state time and activity limitations in the directions.
• Adequately train the observer(s)/scorer(s) to ensure that they are fair in scoring the appropriate behaviors.

III. TWO METHODS FOR ASSESSING TEST ITEM QUALITY

This section presents two methods for collecting feedback on the quality of your test items. The two methods include using self-review checklists and student evaluation of test item quality. You can use the information gathered from either method to identify strengths and weaknesses in your item writing. 

Checklist for Evaluating Test Items

EVALUATE YOUR TEST ITEMS BY CHECKING THE SUGGESTIONS WHICH YOU FEEL YOU HAVE FOLLOWED.  

Grading Essay Test Items

Student evaluation of test item quality , using ices questionnaire items to assess your test item quality .

The following set of ICES (Instructor and Course Evaluation System) questionnaire items can be used to assess the quality of your test items. The items are presented with their original ICES catalogue number. You are encouraged to include one or more of the items on the ICES evaluation form in order to collect student opinion of your item writing quality.

IV. ASSISTANCE OFFERED BY THE CENTER FOR INNOVATION IN TEACHING AND LEARNING (CITL)

The information on this page is intended for self-instruction. However, CITL staff members will consult with faculty who wish to analyze and improve their test item writing. The staff can also consult with faculty about other instructional problems. Instructors wishing to acquire CITL assistance can contact [email protected] . 

V. REFERENCES FOR FURTHER READING

Ebel, R. L. (1965). Measuring educational achievement . Prentice-Hall. Ebel, R. L. (1972). Essentials of educational measurement . Prentice-Hall. Gronlund, N. E. (1976). Measurement and evaluation in teaching (3rd ed.). Macmillan. Mehrens W. A. & Lehmann I. J. (1973). Measurement and evaluation in education and psychology . Holt, Rinehart & Winston. Nelson, C. H. (1970). Measurement and evaluation in the classroom . Macmillan. Payne, D. A. (1974).  The assessment of learning: Cognitive and affective . D.C. Heath & Co. Scannell, D. P., & Tracy D. B. (1975). Testing and measurement in the classroom . Houghton Mifflin. Thorndike, R. L. (1971). Educational measurement (2nd ed.). American Council on Education.

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• Writing Tips

Academic Writing Tips: What Are Study Limitations?

4-minute read

• 7th December 2020

An important part of writing up research is to consider whether your study has any limitations. But what are study limitations? And why are they important? In this post, we explain what you need to know.

What Are Study Limitations?

The term “study limitations” refers to anything that may affect the reliability or generalizability of the results in a study or experiment.

This could relate to the design of the research (e.g., your methods or research approach). Or it could be an issue with how the study was carried out (e.g., running out of time and resources before the study is over).

In either case, it’s important to note limitations when writing up your study. Typically, this will be as part of the discussion and analysis . However, different schools may have different guidelines on this, so make sure to check your style guide for advice on where to discuss study limitations.

Why Write About Study Limitations?

It may seem counterintuitive to include limitations when writing up your research, especially if something went wrong. But there are several good reasons to mention study limitations, including:

• It shows you understand that every study will have at least some limitations and that you’re able to critically analyze your own work.
• You can discuss how the limitations affect your analysis, or how you would address the problems you encountered if you did the study again.
• It may offer opportunities for further research .
• It ensures transparency, making your results more useful for others.

In addition, most of the time your professor will spot any problems with your study regardless of whether you mention them. Thus, it’s much better to embrace limitations and make them part of your analysis.

But what exactly counts as a limitation? Typically, they come in two broad types: methodological limitations and researcher limitations.

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Methodological Limitations

Methodological limitations are to do with the way a study was designed and carried out. Some examples include:

• A small or unrepresentative sample may mean one unusual result skews your conclusions. It also limits the degree to which you can generalize your results to a wider or more varied population.
• Flaws in data collection may mean data is incorrect or incomplete. For example, if you rely on self-reporting in a study, you may later find out that one participant was misleading you, making the results unreliable.
• A lack of prior research in the area you are studying, which might make it difficult for you to predict outcomes and draw meaningful conclusions.
• Your chosen research approach may be limited. For instance, if you only work with quantitative data , you may overlook something a qualitative approach would have worked better for.

There are other methodological limitations you may encounter depending on what you’re studying. But, in all cases, it is important to think about your methods and how they may affect your results.

Researcher Limitations

These are factors to do with the attitudes, capabilities, and situation of the researcher. Examples of this type of limitation include:

• Time or budget constraints may limit the extent of the research that can be carried out, or force you to abandon a study before it is complete.
• Limited access to the necessary equipment, documents, or people may mean you had to limit the scope of your study accordingly.
• A lack of linguistic fluency could limit your access to data. For instance, if previous studies in your subject area are mostly in Chinese and you only know English, you may not be able to read key research.
• Cultural and other biases may shape your methodological choices and your interpretation of the data, which may mean you miss other factors .

As above, the key here is thinking about how these limitations may affect your results. If you do this, you can then factor any limitations into your analysis and discussion when writing up your study.

Expert Academic Proofreading

In conclusion, remember that study limitations occur in all research. This isn’t something to worry about or try and hide. However, you should:

• Think about potential limitations when designing your study. This will help you to make informed decisions about your research approach, objectives, and methodology.
• Acknowledge limitations when you write up your research. You can then take them into consideration when you’re analyzing your results.

To ensure your academic writing is clear and consistent, moreover, why not make use of our expert proofreaders ? Sign up for a free trial today.

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College Teaching, Fall 1997 v45 n4 p150(3) Essays - well worth the effort. Craig W. Steele.

Abstract: More college teachers should make use of essay examinations in their courses. Well-constructed essay questions test higher-level knowledge than most objective questions. They also furnish students with valuable writing practice and provide the opportunity for mutual feedback between teacher and student. Some disadvantages of essay exams include the amount of time they take to grade and their inherent subjectivity. Teachers can increase their grading objectivity by covering students' names, deciding in advance the key points each essay should cover, and stopping the grading when they begin to feel tired.

Full Text: COPYRIGHT 1997 Heldref Publications

Why do questions requiring essay responses make students so apprehensive? Because they are used to taking multiple-choice tests. By the time they enter college, students have had up to twelve years training in this type of examination; it is what they expect in most classes. Multiple-choice tests are easier to take (usually involving only simple recognition and recall), permit a certain amount of guessing, and require basic study skills.

But multiple-choice exams, in my opinion, are the least appropriate evaluation tools for aiding student learning, at any grade level. They do little to help teachers "teach for understanding" (Perkins 1993). I agree with the position of the Writing across the Curriculum (WAC) Association of the Pennsylvania State System of Higher Education, as expressed in the May 1991 issue of Writing and Learning, that "writing is central to all disciplines" because an "active language element is crucial for any significant learning."

Why then, according to WAC, do "most college classes not only neglect the language-based elements of learning, but actively avoid them?" Perhaps the reason is that teachers, as well as students, do not appreciate the advantages of the essay. Also, according to Everett (1994), many teachers avoid writing assignments because of the perceived difficulty and subjectivity in grading them.

Advantages of the Essay

Essays can test higher-level cognitive skills. Objective exams can also test higher-level skills, but on a more limited basis. For any test, the content and style of the questions should be determined by the course objectives. When objectives require students to apply knowledge, analyze data or situations, synthesize, or evaluate, the essay can be an effective test. Because essays address higher-level cognitive processes, you can individually direct students in their thought processes. However, when objectives ask students to describe, to list, or to recognize, the essay exam is probably not useful.

Students study more efficiently in preparing for an essay test. Research has shown that students generally spend less time on rote memorization of material when they study for an essay exam rather than a multiple-choice exam (e.g., Mayer 1975; Shavelson and Stern 1981). Instead, students tend to generalize and conceptualize the material, using facts as support material rather than as ends unto themselves. Students are al so more apt to retain concepts and generalizations than isolated facts and details.

Essays allow students to practice their writing. Many students can graduate from college without having had much practice in writing. Unfortunately, many of these students discover too late that their writing skill in the "real world"--whether it is in the form of a memo, a proposal, or a report--is the difference between success or failure in their profession.

Essays can individualize your instruction. Your feedback on an essay can help students form insights into the subject material, organizational skills, and writing skills. Your comments can also be an important motivator.

Essays provide valuable feedback to you. Sometimes objective test scores do not portray your students' learning. Essays, however, can reveal the depth and breadth of students' knowledge, as well as erroneous conclusions that are drawn.

Essay questions require less time to prepare. Good multiple-choice exams are extremely time-consuming to prepare. The essay, however, requires much less preparation. (Be careful, however, not to "throw together" a list of essay questions.)

Disadvantages of the Essay

Essays are (very) time-consuming to grade. To garner the full benefits of including essays on your tests, you must allot sufficient time to read and comment on the students' responses. Simply scanning a response and assigning it a numerical grade will not close the learning cycle. Students quickly learn how to study for your exams! If they perceive that you fail to grade their responses adequately (as indicated by your written comments and suggestions), students will not bother to study at a higher level for the next test, but will instead return to memorizing facts.

Sometimes an essay question is not representative of the content covered. An example: In an introductory course in human physiology, which has just covered blood, the circulatory system, and the immune system, seven of the ten essay questions are about the circulatory system.

If you use essays, you must use course objectives to determine the content of the questions. By referring to objectives, you will not make the mistake of focusing too narrowly on one aspect of content.

The essay exam often has grading reliability problems. Unlike the multiple-choice format, the essay is a subjective form of evaluation. And teachers often introduce biases into their grading. If you know whose paper is being evaluated, the grade may reflect personal feelings for that student, or may reflect influence from past grades. For example, if the student received an A on a past exam, you may tend to give a higher grade than is actually deserved on this exam (and vice versa if a student had received an F). Also, grades given on first papers may differ significantly from those that are graded later. Other influences include your general mood and stress level at the time of grading, the time of day, and your feelings about the subject of the essay.

Preparing an Essay Question or Exam

These suggestions may help you maximize the benefits of an essay test:

Carefully select those course objectives that can be evaluated through an essay. Cognitive objectives stressing memorization of facts, names, or definitions should not be measured by essays. Essays should require students to analyze hypothetical data, solve sample problems, or compare and contrast concepts.

Phrase the question clearly. After reading the question, the prepared student should know exactly what you expect. If a question's wording is ambiguous or too vague, unprepared students can draw upon the related knowledge they have and write an answer, while claiming (correctly) that they misunderstood what you desired.

Control the level of students' response. If you want more than just a recitation of facts in an essay, word the question so that more is demanded. Read the following examples of essay questions:

When were Medicare and Medicaid established?

How have Medicare and Medicaid contributed to the current U.S. trends of increased demand for health services, increased costs of health care and physicians' services, and longer hospital stays?

What do you suppose might have occurred in the field of health care in the U.S. if Medicare and Medicaid had never been established?

Although all three questions request information on Medicare and Medicaid, the first two require only recitation in writing an answer. The third question, however, requires a knowledge of the first two questions and requires the student to analyze rather than recite.

Write essay questions that sample the content covered. Many professors permit students to choose several essays from a list. Although you may believe this choice benefits the prepared student who may be weak in one area, actually the unprepared student benefits more from this practice because it encourages students to "place a bet" and to omit studying some key areas of content. By allowing choice, you also create different exams, which decreases the content validity and the grading reliability.

Inform students of the grading criteria. You must decide what evaluative criteria will be used. It is important to share this information with students before they write the essay. If you will be grading for language usage, spelling, and grammar, tell them. If you desire a minimum or maximum number of words, tell them. If you desire a certain format, specify it ahead of time.

Share examples of good and weak essays with students. Students can benefit greatly from seeing what is expected of them. In groups, have students apply the grading criteria to several sample essays you provide. Discuss their judgments and yours.

Ten Tips for Grading Writing and Reducing Bias

What can you do to improve the reliability of your grading of responses to essay questions? Following is a list of suggestions:

1. Cover the names of the students. Most teachers attempt to treat all students fairly. However, it is human nature to like some students more than others, or to actively dislike some students as individuals. This personal bias can affect the reliability of the grades. Grading can be influenced by the performance of the student on earlier exams, by the amount of class participation, and by the student's attitude toward the course and the teacher.

2. Familiarize yourself with the general performance level on the exam before you begin to grade. Randomly sample exams and read them thoroughly to determine the general level of performance. This practice will keep your evaluations from being unduly influenced by the quality (whether excellent or poor) of one specific paper.

3. List the points you believe should be discussed in each essay. Such a list can keep you from being "bluffed" by students who are exceptionally accomplished writers, or highly clever and verbal. Unprepared students often select one aspect of a question, or an aspect tangential to the question, and elaborate on that one point to the extent that a reader may become immersed in the writing style, overlooking the insufficiency of the answer. A list of expected points can assist you in assessing objectively the breadth and depth of the response. You can get help from your students in developing these criteria (Everett 1994). Ask them what they believe is important in the assignment, what they would expect to read if they were grading it.

4. Do not attempt to grade all exams in one sitting. As stated earlier in this article, a major disadvantage of essays is the time required to grade them. When you begin to tire of reading the responses, you naturally become too critical or too generous in your grading, which affects the reliability of the grades.

5. Grade only one question or topic at a time. Each question on an essay exam, or each essay question included in an objective test, should be graded separately. Reading an entire exam and then trying to assign a grade also affects the reliability of the grades. By grading exams by individual questions, you will be better able to concentrate on the quality of each individual response and how it compares to other students' responses.

6. Write comments on the exams. Point out the good as well as the bad. Comments indicate that you actually read the exam. Also, they serve as an explanation of why you assigned a particular grade. Comments such as "Expand," "What about . . . ," or "How do you conclude this?" readily indicate weakness to the students. When commenting, adopt a nonconfrontational attitude by assuming that you and the student share a common enterprise. Write to convince the student: be direct in your criticisms, but be dispassionate and never engage in ad hominem attack. Ask yourself whether your disagreement with the student's writing is based on specialized knowledge you possess because of your education and training. If so, then offer that knowledge to the student. Don't simply bash the student for not knowing something that "everyone knows." Maintain an appropriate perspective on the writing assignment, i.e., don't fixate on remarks that may be tangential to the principal point/s of the composition (Moore 1992). Finally, realize that you do not necessarily improve a student's writing by writing an "overwhelming" number of comments on an essay (Moore 1992).

7. Before you assign grades, sort your papers into piles. By sorting papers into piles corresponding to A's, B's, C's, etc., you can quickly check through the piles to ensure that there are no changes to be made. This practice assists you in making decisions about "borderline" papers.

8. Discuss the test with the students. Feedback is a critical element in the learning cycle. Testing provides you with an opportunity to give feedback to your students. In addition to written comments on the essay exam, you should allocate class time to discuss the question and the responses. This practice reinforces the testing process as a part of learning.

9. Have colleagues read the papers. This is an effective way of improving the grading for team-taught courses and for teachers teaching different sections of the same course. If you and a colleague differ greatly in scoring a question, reevaluate the response to the question. It is very important, of course, to tell your students about such dual grading arrangements. You could even improve the feedback to your students by having the different graders identify their comments by different colored inks.

10. If students do not meet your established criteria for a question, consider retesting them on the concepts. After providing feedback on the incorrect answers and time to restructure their concepts, allow students to rewrite their responses. Without an opportunity to revise their response, any comments you make have little effect on improving subsequent writings (see Doher 1991, for a more thorough discussion). After all, the ultimate objective of education is learning, not simply receiving a grade.

Student writing, regardless of subject, is only one-half of the equation. The other half is learning through studying the teacher's thoughtful critique of the writing. Bashing may be brought about unintentionally by a teacher's misunderstanding a student's perspective, reasoning, background, or personal values. Constructive critiquing is an art that must be learned and then practiced.

Doher, G. 1991. Do teachers' comments on students' papers help? College Teaching 39:48-54.

Everett, E. 1994. Do the write thing. The Science Teacher 61(7): 35-7.

Mayer, R. E. 1975. Information processing variables in learning to solve problems. Review of Educational Research 45:525-41.

Moore, R 1992. Writing about biology: How should we mark students' essays? Bioscene: Journal of College Biology Teaching. 18(3): 3-9.

Perkins, D. 1993. Teaching for understanding. American Educator 17(3): 8 and 28-35.

Shavelson, R J. and R Stern. 1981. Research on teachers' pedagogical thoughts, judgments, decisions, and behavior. Review of Educational Research 51:455-98.

Steele, C. W. 1992. Critique; don't bash. Writing and Learning 3(1): 5 6.

Craig W. Steele is an associate professor in the Department of Biology and Health Services at Edinboro University in Edinboro, Pennsylvania.

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How to Present the Limitations of the Study Examples

What are the limitations of a study?

The limitations of a study are the elements of methodology or study design that impact the interpretation of your research results. The limitations essentially detail any flaws or shortcomings in your study. Study limitations can exist due to constraints on research design, methodology, materials, etc., and these factors may impact the findings of your study. However, researchers are often reluctant to discuss the limitations of their study in their papers, feeling that bringing up limitations may undermine its research value in the eyes of readers and reviewers.

In spite of the impact it might have (and perhaps because of it) you should clearly acknowledge any limitations in your research paper in order to show readers—whether journal editors, other researchers, or the general public—that you are aware of these limitations and to explain how they affect the conclusions that can be drawn from the research.

In this article, we provide some guidelines for writing about research limitations, show examples of some frequently seen study limitations, and recommend techniques for presenting this information. And after you have finished drafting and have received manuscript editing for your work, you still might want to follow this up with academic editing before submitting your work to your target journal.

Why do I need to include limitations of research in my paper?

Although limitations address the potential weaknesses of a study, writing about them toward the end of your paper actually strengthens your study by identifying any problems before other researchers or reviewers find them.

Furthermore, pointing out study limitations shows that you’ve considered the impact of research weakness thoroughly and have an in-depth understanding of your research topic. Since all studies face limitations, being honest and detailing these limitations will impress researchers and reviewers more than ignoring them.

Where should I put the limitations of the study in my paper?

Some limitations might be evident to researchers before the start of the study, while others might become clear while you are conducting the research. Whether these limitations are anticipated or not, and whether they are due to research design or to methodology, they should be clearly identified and discussed in the discussion section —the final section of your paper. Most journals now require you to include a discussion of potential limitations of your work, and many journals now ask you to place this “limitations section” at the very end of your article. 

Some journals ask you to also discuss the strengths of your work in this section, and some allow you to freely choose where to include that information in your discussion section—make sure to always check the author instructions of your target journal before you finalize a manuscript and submit it for peer review .

Limitations of the Study Examples

There are several reasons why limitations of research might exist. The two main categories of limitations are those that result from the methodology and those that result from issues with the researcher(s).

Common Methodological Limitations of Studies

Limitations of research due to methodological problems can be addressed by clearly and directly identifying the potential problem and suggesting ways in which this could have been addressed—and SHOULD be addressed in future studies. The following are some major potential methodological issues that can impact the conclusions researchers can draw from the research.

Issues with research samples and selection

Sampling errors occur when a probability sampling method is used to select a sample, but that sample does not reflect the general population or appropriate population concerned. This results in limitations of your study known as “sample bias” or “selection bias.”

For example, if you conducted a survey to obtain your research results, your samples (participants) were asked to respond to the survey questions. However, you might have had limited ability to gain access to the appropriate type or geographic scope of participants. In this case, the people who responded to your survey questions may not truly be a random sample.

Insufficient sample size for statistical measurements

When conducting a study, it is important to have a sufficient sample size in order to draw valid conclusions. The larger the sample, the more precise your results will be. If your sample size is too small, it will be difficult to identify significant relationships in the data.

Normally, statistical tests require a larger sample size to ensure that the sample is considered representative of a population and that the statistical result can be generalized to a larger population. It is a good idea to understand how to choose an appropriate sample size before you conduct your research by using scientific calculation tools—in fact, many journals now require such estimation to be included in every manuscript that is sent out for review.

Lack of previous research studies on the topic

Citing and referencing prior research studies constitutes the basis of the literature review for your thesis or study, and these prior studies provide the theoretical foundations for the research question you are investigating. However, depending on the scope of your research topic, prior research studies that are relevant to your thesis might be limited.

When there is very little or no prior research on a specific topic, you may need to develop an entirely new research typology. In this case, discovering a limitation can be considered an important opportunity to identify literature gaps and to present the need for further development in the area of study.

Methods/instruments/techniques used to collect the data

After you complete your analysis of the research findings (in the discussion section), you might realize that the manner in which you have collected the data or the ways in which you have measured variables has limited your ability to conduct a thorough analysis of the results.

For example, you might realize that you should have addressed your survey questions from another viable perspective, or that you were not able to include an important question in the survey. In these cases, you should acknowledge the deficiency or deficiencies by stating a need for future researchers to revise their specific methods for collecting data that includes these missing elements.

Common Limitations of the Researcher(s)

Study limitations that arise from situations relating to the researcher or researchers (whether the direct fault of the individuals or not) should also be addressed and dealt with, and remedies to decrease these limitations—both hypothetically in your study, and practically in future studies—should be proposed.

Limited access to data

If your research involved surveying certain people or organizations, you might have faced the problem of having limited access to these respondents. Due to this limited access, you might need to redesign or restructure your research in a different way. In this case, explain the reasons for limited access and be sure that your finding is still reliable and valid despite this limitation.

Time constraints

Just as students have deadlines to turn in their class papers, academic researchers might also have to meet deadlines for submitting a manuscript to a journal or face other time constraints related to their research (e.g., participants are only available during a certain period; funding runs out; collaborators move to a new institution). The time available to study a research problem and to measure change over time might be constrained by such practical issues. If time constraints negatively impacted your study in any way, acknowledge this impact by mentioning a need for a future study (e.g., a longitudinal study) to answer this research problem.

Conflicts arising from cultural bias and other personal issues

Researchers might hold biased views due to their cultural backgrounds or perspectives of certain phenomena, and this can affect a study’s legitimacy. Also, it is possible that researchers will have biases toward data and results that only support their hypotheses or arguments. In order to avoid these problems, the author(s) of a study should examine whether the way the research problem was stated and the data-gathering process was carried out appropriately.

Steps for Organizing Your Study Limitations Section

When you discuss the limitations of your study, don’t simply list and describe your limitations—explain how these limitations have influenced your research findings. There might be multiple limitations in your study, but you only need to point out and explain those that directly relate to and impact how you address your research questions.

We suggest that you divide your limitations section into three steps: (1) identify the study limitations; (2) explain how they impact your study in detail; and (3) propose a direction for future studies and present alternatives. By following this sequence when discussing your study’s limitations, you will be able to clearly demonstrate your study’s weakness without undermining the quality and integrity of your research.

Step 1. Identify the limitation(s) of the study

• This part should comprise around 10%-20% of your discussion of study limitations.

The first step is to identify the particular limitation(s) that affected your study. There are many possible limitations of research that can affect your study, but you don’t need to write a long review of all possible study limitations. A 200-500 word critique is an appropriate length for a research limitations section. In the beginning of this section, identify what limitations your study has faced and how important these limitations are.

You only need to identify limitations that had the greatest potential impact on: (1) the quality of your findings, and (2) your ability to answer your research question.

Step 2. Explain these study limitations in detail

• This part should comprise around 60-70% of your discussion of limitations.

After identifying your research limitations, it’s time to explain the nature of the limitations and how they potentially impacted your study. For example, when you conduct quantitative research, a lack of probability sampling is an important issue that you should mention. On the other hand, when you conduct qualitative research, the inability to generalize the research findings could be an issue that deserves mention.

Explain the role these limitations played on the results and implications of the research and justify the choice you made in using this “limiting” methodology or other action in your research. Also, make sure that these limitations didn’t undermine the quality of your dissertation .

Step 3. Propose a direction for future studies and present alternatives (optional)

• This part should comprise around 10-20% of your discussion of limitations.

After acknowledging the limitations of the research, you need to discuss some possible ways to overcome these limitations in future studies. One way to do this is to present alternative methodologies and ways to avoid issues with, or “fill in the gaps of” the limitations of this study you have presented.  Discuss both the pros and cons of these alternatives and clearly explain why researchers should choose these approaches.

Make sure you are current on approaches used by prior studies and the impacts they have had on their findings. Cite review articles or scientific bodies that have recommended these approaches and why. This might be evidence in support of the approach you chose, or it might be the reason you consider your choices to be included as limitations. This process can act as a justification for your approach and a defense of your decision to take it while acknowledging the feasibility of other approaches.

P hrases and Tips for Introducing Your Study Limitations in the Discussion Section

The following phrases are frequently used to introduce the limitations of the study:

• “There may be some possible limitations in this study.”
• “The findings of this study have to be seen in light of some limitations.”
•  “The first is the…The second limitation concerns the…”
•  “The empirical results reported herein should be considered in the light of some limitations.”
• “This research, however, is subject to several limitations.”
• “The primary limitation to the generalization of these results is…”
• “Nonetheless, these results must be interpreted with caution and a number of limitations should be borne in mind.”
• “As with the majority of studies, the design of the current study is subject to limitations.”
• “There are two major limitations in this study that could be addressed in future research. First, the study focused on …. Second ….”

For more articles on research writing and the journal submissions and publication process, visit Wordvice’s Academic Resources page.

And be sure to receive professional English editing and proofreading services , including paper editing services , for your journal manuscript before submitting it to journal editors.

Wordvice Resources

Proofreading & Editing Guide

Writing the Results Section for a Research Paper

How to Write a Literature Review

Research Writing Tips: How to Draft a Powerful Discussion Section

How to Captivate Journal Readers with a Strong Introduction

Tips That Will Make Your Abstract a Success!

APA In-Text Citation Guide for Research Writing

Additional Resources

• Diving Deeper into Limitations and Delimitations (PhD student)
• Organizing Your Social Sciences Research Paper: Limitations of the Study (USC Library)
• Research Limitations (Research Methodology)
• How to Present Limitations and Alternatives (UMASS)

Article References

Pearson-Stuttard, J., Kypridemos, C., Collins, B., Mozaffarian, D., Huang, Y., Bandosz, P.,…Micha, R. (2018). Estimating the health and economic effects of the proposed US Food and Drug Administration voluntary sodium reformulation: Microsimulation cost-effectiveness analysis. PLOS. https://journals.plos.org/plosmedicine/article?id=10.1371/journal.pmed.1002551

Xu, W.L, Pedersen, N.L., Keller, L., Kalpouzos, G., Wang, H.X., Graff, C,. Fratiglioni, L. (2015). HHEX_23 AA Genotype Exacerbates Effect of Diabetes on Dementia and Alzheimer Disease: A Population-Based Longitudinal Study. PLOS. Retrieved from https://journals.plos.org/plosmedicine/article?id=10.1371/journal.pmed.1001853

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The limitations of the study are those characteristics of design or methodology that impacted or influenced the interpretation of the findings from your research. Study limitations are the constraints placed on the ability to generalize from the results, to further describe applications to practice, and/or related to the utility of findings that are the result of the ways in which you initially chose to design the study or the method used to establish internal and external validity or the result of unanticipated challenges that emerged during the study.

Price, James H. and Judy Murnan. “Research Limitations and the Necessity of Reporting Them.” American Journal of Health Education 35 (2004): 66-67; Theofanidis, Dimitrios and Antigoni Fountouki. "Limitations and Delimitations in the Research Process." Perioperative Nursing 7 (September-December 2018): 155-163. .

Importance of...

Always acknowledge a study's limitations. It is far better that you identify and acknowledge your study’s limitations than to have them pointed out by your professor and have your grade lowered because you appeared to have ignored them or didn't realize they existed.

Keep in mind that acknowledgment of a study's limitations is an opportunity to make suggestions for further research. If you do connect your study's limitations to suggestions for further research, be sure to explain the ways in which these unanswered questions may become more focused because of your study.

Acknowledgment of a study's limitations also provides you with opportunities to demonstrate that you have thought critically about the research problem, understood the relevant literature published about it, and correctly assessed the methods chosen for studying the problem. A key objective of the research process is not only discovering new knowledge but also to confront assumptions and explore what we don't know.

Claiming limitations is a subjective process because you must evaluate the impact of those limitations . Don't just list key weaknesses and the magnitude of a study's limitations. To do so diminishes the validity of your research because it leaves the reader wondering whether, or in what ways, limitation(s) in your study may have impacted the results and conclusions. Limitations require a critical, overall appraisal and interpretation of their impact. You should answer the question: do these problems with errors, methods, validity, etc. eventually matter and, if so, to what extent?

Price, James H. and Judy Murnan. “Research Limitations and the Necessity of Reporting Them.” American Journal of Health Education 35 (2004): 66-67; Structure: How to Structure the Research Limitations Section of Your Dissertation. Dissertations and Theses: An Online Textbook. Laerd.com.

Descriptions of Possible Limitations

All studies have limitations . However, it is important that you restrict your discussion to limitations related to the research problem under investigation. For example, if a meta-analysis of existing literature is not a stated purpose of your research, it should not be discussed as a limitation. Do not apologize for not addressing issues that you did not promise to investigate in the introduction of your paper.

Here are examples of limitations related to methodology and the research process you may need to describe and discuss how they possibly impacted your results. Note that descriptions of limitations should be stated in the past tense because they were discovered after you completed your research.

Possible Methodological Limitations

• Sample size -- the number of the units of analysis you use in your study is dictated by the type of research problem you are investigating. Note that, if your sample size is too small, it will be difficult to find significant relationships from the data, as statistical tests normally require a larger sample size to ensure a representative distribution of the population and to be considered representative of groups of people to whom results will be generalized or transferred. Note that sample size is generally less relevant in qualitative research if explained in the context of the research problem.
• Lack of available and/or reliable data -- a lack of data or of reliable data will likely require you to limit the scope of your analysis, the size of your sample, or it can be a significant obstacle in finding a trend and a meaningful relationship. You need to not only describe these limitations but provide cogent reasons why you believe data is missing or is unreliable. However, don’t just throw up your hands in frustration; use this as an opportunity to describe a need for future research based on designing a different method for gathering data.
• Lack of prior research studies on the topic -- citing prior research studies forms the basis of your literature review and helps lay a foundation for understanding the research problem you are investigating. Depending on the currency or scope of your research topic, there may be little, if any, prior research on your topic. Before assuming this to be true, though, consult with a librarian! In cases when a librarian has confirmed that there is little or no prior research, you may be required to develop an entirely new research typology [for example, using an exploratory rather than an explanatory research design ]. Note again that discovering a limitation can serve as an important opportunity to identify new gaps in the literature and to describe the need for further research.
• Measure used to collect the data -- sometimes it is the case that, after completing your interpretation of the findings, you discover that the way in which you gathered data inhibited your ability to conduct a thorough analysis of the results. For example, you regret not including a specific question in a survey that, in retrospect, could have helped address a particular issue that emerged later in the study. Acknowledge the deficiency by stating a need for future researchers to revise the specific method for gathering data.
• Self-reported data -- whether you are relying on pre-existing data or you are conducting a qualitative research study and gathering the data yourself, self-reported data is limited by the fact that it rarely can be independently verified. In other words, you have to the accuracy of what people say, whether in interviews, focus groups, or on questionnaires, at face value. However, self-reported data can contain several potential sources of bias that you should be alert to and note as limitations. These biases become apparent if they are incongruent with data from other sources. These are: (1) selective memory [remembering or not remembering experiences or events that occurred at some point in the past]; (2) telescoping [recalling events that occurred at one time as if they occurred at another time]; (3) attribution [the act of attributing positive events and outcomes to one's own agency, but attributing negative events and outcomes to external forces]; and, (4) exaggeration [the act of representing outcomes or embellishing events as more significant than is actually suggested from other data].

Possible Limitations of the Researcher

• Access -- if your study depends on having access to people, organizations, data, or documents and, for whatever reason, access is denied or limited in some way, the reasons for this needs to be described. Also, include an explanation why being denied or limited access did not prevent you from following through on your study.
• Longitudinal effects -- unlike your professor, who can literally devote years [even a lifetime] to studying a single topic, the time available to investigate a research problem and to measure change or stability over time is constrained by the due date of your assignment. Be sure to choose a research problem that does not require an excessive amount of time to complete the literature review, apply the methodology, and gather and interpret the results. If you're unsure whether you can complete your research within the confines of the assignment's due date, talk to your professor.
• Cultural and other type of bias -- we all have biases, whether we are conscience of them or not. Bias is when a person, place, event, or thing is viewed or shown in a consistently inaccurate way. Bias is usually negative, though one can have a positive bias as well, especially if that bias reflects your reliance on research that only support your hypothesis. When proof-reading your paper, be especially critical in reviewing how you have stated a problem, selected the data to be studied, what may have been omitted, the manner in which you have ordered events, people, or places, how you have chosen to represent a person, place, or thing, to name a phenomenon, or to use possible words with a positive or negative connotation. NOTE :   If you detect bias in prior research, it must be acknowledged and you should explain what measures were taken to avoid perpetuating that bias. For example, if a previous study only used boys to examine how music education supports effective math skills, describe how your research expands the study to include girls.
• Fluency in a language -- if your research focuses , for example, on measuring the perceived value of after-school tutoring among Mexican-American ESL [English as a Second Language] students and you are not fluent in Spanish, you are limited in being able to read and interpret Spanish language research studies on the topic or to speak with these students in their primary language. This deficiency should be acknowledged.

Aguinis, Hermam and Jeffrey R. Edwards. “Methodological Wishes for the Next Decade and How to Make Wishes Come True.” Journal of Management Studies 51 (January 2014): 143-174; Brutus, Stéphane et al. "Self-Reported Limitations and Future Directions in Scholarly Reports: Analysis and Recommendations." Journal of Management 39 (January 2013): 48-75; Senunyeme, Emmanuel K. Business Research Methods. Powerpoint Presentation. Regent University of Science and Technology; ter Riet, Gerben et al. “All That Glitters Isn't Gold: A Survey on Acknowledgment of Limitations in Biomedical Studies.” PLOS One 8 (November 2013): 1-6.

Structure and Writing Style

Information about the limitations of your study are generally placed either at the beginning of the discussion section of your paper so the reader knows and understands the limitations before reading the rest of your analysis of the findings, or, the limitations are outlined at the conclusion of the discussion section as an acknowledgement of the need for further study. Statements about a study's limitations should not be buried in the body [middle] of the discussion section unless a limitation is specific to something covered in that part of the paper. If this is the case, though, the limitation should be reiterated at the conclusion of the section.

If you determine that your study is seriously flawed due to important limitations , such as, an inability to acquire critical data, consider reframing it as an exploratory study intended to lay the groundwork for a more complete research study in the future. Be sure, though, to specifically explain the ways that these flaws can be successfully overcome in a new study.

But, do not use this as an excuse for not developing a thorough research paper! Review the tab in this guide for developing a research topic . If serious limitations exist, it generally indicates a likelihood that your research problem is too narrowly defined or that the issue or event under study is too recent and, thus, very little research has been written about it. If serious limitations do emerge, consult with your professor about possible ways to overcome them or how to revise your study.

When discussing the limitations of your research, be sure to:

• Describe each limitation in detailed but concise terms;
• Explain why each limitation exists;
• Provide the reasons why each limitation could not be overcome using the method(s) chosen to acquire or gather the data [cite to other studies that had similar problems when possible];
• Assess the impact of each limitation in relation to the overall findings and conclusions of your study; and,
• If appropriate, describe how these limitations could point to the need for further research.

Remember that the method you chose may be the source of a significant limitation that has emerged during your interpretation of the results [for example, you didn't interview a group of people that you later wish you had]. If this is the case, don't panic. Acknowledge it, and explain how applying a different or more robust methodology might address the research problem more effectively in a future study. A underlying goal of scholarly research is not only to show what works, but to demonstrate what doesn't work or what needs further clarification.

Aguinis, Hermam and Jeffrey R. Edwards. “Methodological Wishes for the Next Decade and How to Make Wishes Come True.” Journal of Management Studies 51 (January 2014): 143-174; Brutus, Stéphane et al. "Self-Reported Limitations and Future Directions in Scholarly Reports: Analysis and Recommendations." Journal of Management 39 (January 2013): 48-75; Ioannidis, John P.A. "Limitations are not Properly Acknowledged in the Scientific Literature." Journal of Clinical Epidemiology 60 (2007): 324-329; Pasek, Josh. Writing the Empirical Social Science Research Paper: A Guide for the Perplexed. January 24, 2012. Academia.edu; Structure: How to Structure the Research Limitations Section of Your Dissertation. Dissertations and Theses: An Online Textbook. Laerd.com; What Is an Academic Paper? Institute for Writing Rhetoric. Dartmouth College; Writing the Experimental Report: Methods, Results, and Discussion. The Writing Lab and The OWL. Purdue University.

Writing Tip

Don't Inflate the Importance of Your Findings!

After all the hard work and long hours devoted to writing your research paper, it is easy to get carried away with attributing unwarranted importance to what you’ve done. We all want our academic work to be viewed as excellent and worthy of a good grade, but it is important that you understand and openly acknowledge the limitations of your study. Inflating the importance of your study's findings could be perceived by your readers as an attempt hide its flaws or encourage a biased interpretation of the results. A small measure of humility goes a long way!

Another Writing Tip

Negative Results are Not a Limitation!

Negative evidence refers to findings that unexpectedly challenge rather than support your hypothesis. If you didn't get the results you anticipated, it may mean your hypothesis was incorrect and needs to be reformulated. Or, perhaps you have stumbled onto something unexpected that warrants further study. Moreover, the absence of an effect may be very telling in many situations, particularly in experimental research designs. In any case, your results may very well be of importance to others even though they did not support your hypothesis. Do not fall into the trap of thinking that results contrary to what you expected is a limitation to your study. If you carried out the research well, they are simply your results and only require additional interpretation.

Lewis, George H. and Jonathan F. Lewis. “The Dog in the Night-Time: Negative Evidence in Social Research.” The British Journal of Sociology 31 (December 1980): 544-558.

Yet Another Writing Tip

Sample Size Limitations in Qualitative Research

Sample sizes are typically smaller in qualitative research because, as the study goes on, acquiring more data does not necessarily lead to more information. This is because one occurrence of a piece of data, or a code, is all that is necessary to ensure that it becomes part of the analysis framework. However, it remains true that sample sizes that are too small cannot adequately support claims of having achieved valid conclusions and sample sizes that are too large do not permit the deep, naturalistic, and inductive analysis that defines qualitative inquiry. Determining adequate sample size in qualitative research is ultimately a matter of judgment and experience in evaluating the quality of the information collected against the uses to which it will be applied and the particular research method and purposeful sampling strategy employed. If the sample size is found to be a limitation, it may reflect your judgment about the methodological technique chosen [e.g., single life history study versus focus group interviews] rather than the number of respondents used.

Boddy, Clive Roland. "Sample Size for Qualitative Research." Qualitative Market Research: An International Journal 19 (2016): 426-432; Huberman, A. Michael and Matthew B. Miles. "Data Management and Analysis Methods." In Handbook of Qualitative Research . Norman K. Denzin and Yvonna S. Lincoln, eds. (Thousand Oaks, CA: Sage, 1994), pp. 428-444; Blaikie, Norman. "Confounding Issues Related to Determining Sample Size in Qualitative Research." International Journal of Social Research Methodology 21 (2018): 635-641; Oppong, Steward Harrison. "The Problem of Sampling in qualitative Research." Asian Journal of Management Sciences and Education 2 (2013): 202-210.

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Home » Limitations in Research – Types, Examples and Writing Guide

Limitations in Research – Types, Examples and Writing Guide

Table of Contents

Limitations in Research

Limitations in research refer to the factors that may affect the results, conclusions , and generalizability of a study. These limitations can arise from various sources, such as the design of the study, the sampling methods used, the measurement tools employed, and the limitations of the data analysis techniques.

Types of Limitations in Research

Types of Limitations in Research are as follows:

Sample Size Limitations

This refers to the size of the group of people or subjects that are being studied. If the sample size is too small, then the results may not be representative of the population being studied. This can lead to a lack of generalizability of the results.

Time Limitations

Time limitations can be a constraint on the research process . This could mean that the study is unable to be conducted for a long enough period of time to observe the long-term effects of an intervention, or to collect enough data to draw accurate conclusions.

Selection Bias

This refers to a type of bias that can occur when the selection of participants in a study is not random. This can lead to a biased sample that is not representative of the population being studied.

Confounding Variables

Confounding variables are factors that can influence the outcome of a study, but are not being measured or controlled for. These can lead to inaccurate conclusions or a lack of clarity in the results.

Measurement Error

This refers to inaccuracies in the measurement of variables, such as using a faulty instrument or scale. This can lead to inaccurate results or a lack of validity in the study.

Ethical Limitations

Ethical limitations refer to the ethical constraints placed on research studies. For example, certain studies may not be allowed to be conducted due to ethical concerns, such as studies that involve harm to participants.

Examples of Limitations in Research

Some Examples of Limitations in Research are as follows:

Research Title: “The Effectiveness of Machine Learning Algorithms in Predicting Customer Behavior”

Limitations:

• The study only considered a limited number of machine learning algorithms and did not explore the effectiveness of other algorithms.
• The study used a specific dataset, which may not be representative of all customer behaviors or demographics.
• The study did not consider the potential ethical implications of using machine learning algorithms in predicting customer behavior.

Research Title: “The Impact of Online Learning on Student Performance in Computer Science Courses”

• The study was conducted during the COVID-19 pandemic, which may have affected the results due to the unique circumstances of remote learning.
• The study only included students from a single university, which may limit the generalizability of the findings to other institutions.
• The study did not consider the impact of individual differences, such as prior knowledge or motivation, on student performance in online learning environments.

Research Title: “The Effect of Gamification on User Engagement in Mobile Health Applications”

• The study only tested a specific gamification strategy and did not explore the effectiveness of other gamification techniques.
• The study relied on self-reported measures of user engagement, which may be subject to social desirability bias or measurement errors.
• The study only included a specific demographic group (e.g., young adults) and may not be generalizable to other populations with different preferences or needs.

How to Write Limitations in Research

When writing about the limitations of a research study, it is important to be honest and clear about the potential weaknesses of your work. Here are some tips for writing about limitations in research:

• Identify the limitations: Start by identifying the potential limitations of your research. These may include sample size, selection bias, measurement error, or other issues that could affect the validity and reliability of your findings.
• Be honest and objective: When describing the limitations of your research, be honest and objective. Do not try to minimize or downplay the limitations, but also do not exaggerate them. Be clear and concise in your description of the limitations.
• Provide context: It is important to provide context for the limitations of your research. For example, if your sample size was small, explain why this was the case and how it may have affected your results. Providing context can help readers understand the limitations in a broader context.
• Discuss implications : Discuss the implications of the limitations for your research findings. For example, if there was a selection bias in your sample, explain how this may have affected the generalizability of your findings. This can help readers understand the limitations in terms of their impact on the overall validity of your research.
• Provide suggestions for future research : Finally, provide suggestions for future research that can address the limitations of your study. This can help readers understand how your research fits into the broader field and can provide a roadmap for future studies.

Purpose of Limitations in Research

There are several purposes of limitations in research. Here are some of the most important ones:

• To acknowledge the boundaries of the study : Limitations help to define the scope of the research project and set realistic expectations for the findings. They can help to clarify what the study is not intended to address.
• To identify potential sources of bias: Limitations can help researchers identify potential sources of bias in their research design, data collection, or analysis. This can help to improve the validity and reliability of the findings.
• To provide opportunities for future research: Limitations can highlight areas for future research and suggest avenues for further exploration. This can help to advance knowledge in a particular field.
• To demonstrate transparency and accountability: By acknowledging the limitations of their research, researchers can demonstrate transparency and accountability to their readers, peers, and funders. This can help to build trust and credibility in the research community.
• To encourage critical thinking: Limitations can encourage readers to critically evaluate the study’s findings and consider alternative explanations or interpretations. This can help to promote a more nuanced and sophisticated understanding of the topic under investigation.

When to Write Limitations in Research

Limitations should be included in research when they help to provide a more complete understanding of the study’s results and implications. A limitation is any factor that could potentially impact the accuracy, reliability, or generalizability of the study’s findings.

It is important to identify and discuss limitations in research because doing so helps to ensure that the results are interpreted appropriately and that any conclusions drawn are supported by the available evidence. Limitations can also suggest areas for future research, highlight potential biases or confounding factors that may have affected the results, and provide context for the study’s findings.

Generally, limitations should be discussed in the conclusion section of a research paper or thesis, although they may also be mentioned in other sections, such as the introduction or methods. The specific limitations that are discussed will depend on the nature of the study, the research question being investigated, and the data that was collected.

Examples of limitations that might be discussed in research include sample size limitations, data collection methods, the validity and reliability of measures used, and potential biases or confounding factors that could have affected the results. It is important to note that limitations should not be used as a justification for poor research design or methodology, but rather as a way to enhance the understanding and interpretation of the study’s findings.

Importance of Limitations in Research

Here are some reasons why limitations are important in research:

• Enhances the credibility of research: Limitations highlight the potential weaknesses and threats to validity, which helps readers to understand the scope and boundaries of the study. This improves the credibility of research by acknowledging its limitations and providing a clear picture of what can and cannot be concluded from the study.
• Facilitates replication: By highlighting the limitations, researchers can provide detailed information about the study’s methodology, data collection, and analysis. This information helps other researchers to replicate the study and test the validity of the findings, which enhances the reliability of research.
• Guides future research : Limitations provide insights into areas for future research by identifying gaps or areas that require further investigation. This can help researchers to design more comprehensive and effective studies that build on existing knowledge.
• Provides a balanced view: Limitations help to provide a balanced view of the research by highlighting both strengths and weaknesses. This ensures that readers have a clear understanding of the study’s limitations and can make informed decisions about the generalizability and applicability of the findings.

Advantages of Limitations in Research

Here are some potential advantages of limitations in research:

• Focus : Limitations can help researchers focus their study on a specific area or population, which can make the research more relevant and useful.
• Realism : Limitations can make a study more realistic by reflecting the practical constraints and challenges of conducting research in the real world.
• Innovation : Limitations can spur researchers to be more innovative and creative in their research design and methodology, as they search for ways to work around the limitations.
• Rigor : Limitations can actually increase the rigor and credibility of a study, as researchers are forced to carefully consider the potential sources of bias and error, and address them to the best of their abilities.
• Generalizability : Limitations can actually improve the generalizability of a study by ensuring that it is not overly focused on a specific sample or situation, and that the results can be applied more broadly.

About the author

Muhammad Hassan

Researcher, Academic Writer, Web developer

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