what is a critical literature review

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Literature reviews: criticality.

• Criticality

Express Critical Analysis

The literature review of a dissertation should include critical analysis. You cannot simply juxtapose the literature you find: you have to  evaluate and draw conclusions from it.  

Paragraph level  

Try expressing your voice in each paragraph of your literature review. Write strong paragraphs. In strong paragraphs your voice can be heard in the topic sentence, development (where you analyse and compare/contrast the sources, sometimes as individual pieces, sometimes in a synthesis) and, even more easily, in the concluding sentence, where you present the "therefore" of the paragraph. 

How to express criticality at the paragraph level:  

Identify the significance of the sources, and why the points they are making are relevant  

Make connections between the sources 

Compare and contrast sources, literatures  

Accept/adopt points made by the sources, with reasons  

Reject the points made by the sources, with reasons (e.g., limitations in the methodology; out of date; limited scope; geographical delimitation) 

Indicate the position you are taking in your own work on the theories and concepts presented by the sources 

Show how limitations in the existing literature create a research gap for you 

Organise the materials, synthesising them in an original way, that sheds new light on the topic.  

To find out more about paragraph writing, check out the Assignment Writing Guides.

Literature review level 

Try to take ownership of the literature review. Remember the purposes of the review (providing background on the subject you are researching and identifying a gap in the existing literature on this subject). Thus, throughout the review:   

Identify the key themes relevant to your subject matter  

Identify the most logical and effective order for your themes 

Relate the sources back to the dissertation's research question 

Shed new light on the topic 

Draw conclusions on the existing literature  

Identify gaps in the literature  

Your literature review should present an argument (which you can recap in the concluding paragraph of the literature review). For instance, 

"The literature says/illustrates/reveals that... there are debates in the literature as of... it can be understood from the literature that... however, there are gaps in the literature... the literature does not specifically address (specific sector/location/population)... there is a lack of independent/recent studies on...  therefore in order to answer the research question(s) (you can repeat the question) this dissertation uses method xyz, as illustrated in the next section (if applicable)". 

Manchester University’s  academic phrase bank  is a great resource for learning new words and phrases. 

Extra Resources

For extra help with all aspects of study skills including how to undertake literature reviews, appointments are available with learning advisors on Engage. 

Appointments are also available with an Academic Engagement Librarian to discuss any issues you might be having with research.

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• Last Updated: Nov 18, 2023 10:56 PM
• URL: https://libguides.westminster.ac.uk/literature-reviews

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As you read research papers, you may notice that there are two very different kinds of review of prior studies. Sometimes, this section of a paper is called a literature review, and at other times, it is referred to as a critical review or a critical context . These differences may be more commonly seen across different fields. Although both these sections are about reviewing prior and existing studies, this article aims to clarify the differences between the two.

Literature review

A literature review is a summary of prior or existing studies that are related to your own research paper . A literature review can be a part of a research paper or can form a paper in itself . For the former, the literature review is designed as a basis upon which your own current study is designed and built. The latter forms a synthesis of prior studies and is a way to highlight future research agendas or a framework.

Writing a literature review

In a literature review, you should attempt to discuss the arguments and findings in prior studies and then work to build on these studies as you develop your own research. You can also highlight the connection between existing and prior literature to demonstrate how the current study you are presenting can advance your knowledge in the field .

When performing a literature review, you should aim to summarise your discussions using a specific aspect of the literature, such as by topic, time, methodology/ design and findings . By doing so, you should be able to establish an effective way to present the relevant literature and demonstrate the connection between prior studies and your research.

Do note that a literature review does not include a presentation or discussion of any results or findings – this should come at a later point in the paper or study. You should also not impose your subjective viewpoints or opinions on the literature you discuss. 

Critical review

A critical review is also a popular way of reviewing prior and existing studies. It can cover and discuss the main ideas or arguments in a book or an article, or it can review a specific concept, theme, theoretical perspective or key construct found in the existing literature .

However, the key feature that distinguishes a critical review from a literature review is that the former is more than just a summary of different topics or methodologies. It offers more of a reflection and critique of the concept in question, and is engaged by authors to more clearly contextualise their own research within the existing literature and to present their opinions, perspectives and approaches .

Given that a critical review is not just a summary of prior literature, it is generally not considered acceptable to follow the same strategy as for a literature review. Instead, aim to organise and structure your critical review in a way that would enable you to discuss the key concepts, assert your perspectives and locate your arguments and research within the existing body of work. 

Structuring a critical review

A critical review would generally begin with an introduction to the concepts you would like to discuss. Depending on how broad the topics are, this can simply be a brief overview or it could set up a more complex framework. The discussion that follows through the rest of the review will then address and discuss your chosen themes or topics in more depth. 

Writing a critical review

The discussion within a critical review will not only present and summarise themes but also critically engage with the varying arguments, writings and perspectives within those themes. One important thing to note is that, similar to a literature review , you should keep your personal opinions, likes and dislikes out of a review. Whether you personally agree with a study or argument – and whether you like it or not – is immaterial. Instead, you should focus upon the effectiveness and relevance of the arguments , considering such elements as the evidence provided, the interpretations and analysis of the data, whether or not a study may be biased in any way, what further questions or problems it raises or what outstanding gaps and issues need to be addressed.

In conclusion

Although a review of previous and existing literature can be performed and presented in different ways, in essence, any literature or critical review requires a solid understanding of the most prominent work in the field as it relates to your own study. Such an understanding is crucial and significant for you to build upon and synthesise the existing knowledge, and to create and contribute new knowledge to advance the field .

Read previous (fourth) in series: How to refer to other studies or literature in the different sections of a research paper

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Conduct a literature review

What is a literature review.

A literature review is a summary of the published work in a field of study. This can be a section of a larger paper or article, or can be the focus of an entire paper. Literature reviews show that you have examined the breadth of knowledge and can justify your thesis or research questions. They are also valuable tools for other researchers who need to find a summary of that field of knowledge.

Unlike an annotated bibliography, which is a list of sources with short descriptions, a literature review synthesizes sources into a summary that has a thesis or statement of purpose—stated or implied—at its core.

How do I write a literature review?

Step 1: define your research scope.

• What is the specific research question that your literature review helps to define?
• Are there a maximum or minimum number of sources that your review should include?

Ask us if you have questions about refining your topic, search methods, writing tips, or citation management.

Step 2: Identify the literature

Start by searching broadly. Literature for your review will typically be acquired through scholarly books, journal articles, and/or dissertations. Develop an understanding of what is out there, what terms are accurate and helpful, etc., and keep track of all of it with citation management tools . If you need help figuring out key terms and where to search, ask us .

Use citation searching to track how scholars interact with, and build upon, previous research:

• Mine the references cited section of each relevant source for additional key sources
• Use Google Scholar or Scopus to find other sources that have cited a particular work

Step 3: Critically analyze the literature

Key to your literature review is a critical analysis of the literature collected around your topic. The analysis will explore relationships, major themes, and any critical gaps in the research expressed in the work. Read and summarize each source with an eye toward analyzing authority, currency, coverage, methodology, and relationship to other works. The University of Toronto's Writing Center provides a comprehensive list of questions you can use to analyze your sources.

Step 4: Categorize your resources

Divide the available resources that pertain to your research into categories reflecting their roles in addressing your research question. Possible ways to categorize resources include organization by:

• methodology
• theoretical/philosophical approach

Regardless of the division, each category should be accompanied by thorough discussions and explanations of strengths and weaknesses, value to the overall survey, and comparisons with similar sources. You may have enough resources when:

• You've used multiple databases and other resources (web portals, repositories, etc.) to get a variety of perspectives on the research topic.
• The same citations are showing up in a variety of databases.

Additional resources

Undergraduate student resources.

• Literature Review Handout (University of North Carolina at Chapel Hill)
• Learn how to write a review of literature (University of Wisconsin-Madison)

Graduate student and faculty resources

• Information Research Strategies (University of Arizona)
• Literature Reviews: An Overview for Graduate Students (NC State University)
• Oliver, P. (2012). Succeeding with Your Literature Review: A Handbook for Students [ebook]
• Machi, L. A. & McEvoy, B. T. (2016). The Literature Review: Six Steps to Success [ebook]
• Graustein, J. S. (2012). How to Write an Exceptional Thesis or Dissertation: A Step-by-Step Guide from Proposal to Successful Defense [ebook]
• Thomas, R. M. & Brubaker, D. L. (2008). Theses and Dissertations: A Guide to Planning, Research, and Writing

Literature reviews

• Introduction
• Conduct your search
• Store and organise the literature

Evaluate the information you have found

Critique the literature.

• Different subject areas
• Find literature reviews

When conducting your searches you may find many references that will not be suitable to use in your literature review.

• Skim through the resource. A quick read through the table of contents, the introductory paragraph or the abstract should indicate whether you need to read further or whether you can immediately discard the result.
• Evaluate the quality and reliability of the references you find. Our evaluating information  page outlines what you need to consider when evaluating the books, journal articles, news and websites you find to ensure they are suitable for use in your literature review.

Critiquing the literature involves looking at the strength and weaknesses of the paper and evaluating the statements made by the author/s.

Books and resources on reading critically

• CASP Checklists Critical appraisal tools designed to be used when reading research. Includes tools for Qualitative studies, Systematic Reviews, Randomised Controlled Trials, Cohort Studies, Case Control Studies, Economic Evaluations, Diagnostic Studies and Clinical Prediction Rule.
• How to read critically - business and management From Postgraduate research in business - the aim of this chapter is to show you how to become a critical reader of typical academic literature in business and management.
• Learning to read critically in language and literacy Aims to develop skills of critical analysis and research design. It presents a series of examples of `best practice' in language and literacy education research.
• Critical appraisal in health sciences See tools for critically appraising health science research.

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• Next: Different subject areas >>
• Last Updated: May 28, 2024 2:31 PM
• URL: https://guides.library.uq.edu.au/research-techniques/literature-reviews

Research in the Biological and Life Sciences: A Guide for Cornell Researchers: Literature Reviews

• Books and Dissertations
• Databases and Journals
• Locating Theses
• Resource Not at Cornell?
• Citing Sources
• Staying Current
• Measuring your research impact
• Plagiarism and Copyright
• Data Management
• Literature Reviews
• Evidence Synthesis and Systematic Reviews
• Writing an Honors Thesis
• Poster Making and Printing
• Research Help

What is a Literature Review?

A literature review is a body of text that aims to review the critical points of current knowledge on a particular topic. Most often associated with science-oriented literature, such as a thesis, the literature review usually proceeds a research proposal, methodology and results section. Its ultimate goals is to bring the reader up to date with current literature on a topic and forms that basis for another goal, such as the justification for future research in the area. (retrieved from  http://en.wikipedia.org/wiki/Literature_review )

Writing a Literature Review

The literature review is the section of your paper in which you cite and briefly review the related research studies that have been conducted. In this space, you will describe the foundation on which  your  research will be/is built. You will:

• discuss the work of others
• evaluate their methods and findings
• identify any gaps in their research
• state how  your  research is different

The literature review should be selective and should group the cited studies in some logical fashion.

If you need some additional assistance writing your literature review, the Knight Institute for Writing in the Disciplines offers a  Graduate Writing Service .

Demystifying the Literature Review

For more information, visit our guide devoted to " Demystifying the Literature Review " which includes:

• guide to conducting a literature review,
• a recorded 1.5 hour workshop covering the steps of a literature review, a checklist for drafting your topic and search terms, citation management software for organizing your results, and database searching.

Online Resources

• A Guide to Library Research at Cornell University
• Literature Reviews: An Overview for Graduate Students North Carolina State University 
• The Literature Review: A Few Tips on Conducting Written by Dena Taylor, Director, Health Sciences Writing Centre, and Margaret Procter, Coordinator, Writing Support, University of Toronto
• How to Write a Literature Review University Library, University of California, Santa Cruz
• Review of Literature The Writing Center, University of Wisconsin-Madison

Print Resources

• << Previous: Writing
• Next: Evidence Synthesis and Systematic Reviews >>
• Last Updated: Oct 25, 2023 11:28 AM
• URL: https://guides.library.cornell.edu/bio

Chaos to Clarity: Structuring Your Literature Review Format

Master literature review format! Learn key sections, effective citation & analysis tips to write a strong academic review.

Ever wondered how to dive into a mountain of books and articles and come up with something that not just makes sense but shines new light on a topic? What if there was a way to neatly tie together all that information, spot what’s missing, and maybe even pave the way for discoveries? 

That’s what you are going to learn in this article, literature reviews—a place where chaos meets order, and where your insights could set the stage for the next big thing. Let’s break down the literature review format , your essential guide to properly writing a literature review.

Dissecting Literature Review Format 

There are 6 main sections to make a note of while writing a literature review. Those are:

The Introduction Section

Topic background, conceptual framework.

• Synthesis and Evaluation in Literature Reviews
• Conclusion for Your Literature Review
• Reference List in Your Literature Review

Also Read: Essential Components of a Literature Review

The introduction of your literature review is where you set the stage for the entire document. It’s your first opportunity to engage your readers and provide a clear blueprint of what your review will cover and why it matters. This section does more than merely introduce the topic; it establishes the context, defines the scope, and outlines the purpose and objectives of your literature review.

Things to keep in mind while writing an introduction:

• Craft a compelling opening
• Establish the Context and Justification
• Define the Scope and Objectives
• Lay out the Structure
• Give an overview of the Structure

The “Topic Background” section of a literature review serves as the cornerstone for understanding the evolution and current state of the subject matter. It is divided into two crucial sub-sections: Historical Context and Current State of the Topic . 

Delving into these areas provides you with a comprehensive backdrop against which the literature review is framed, enriching the reader’s understanding of why the topic is of interest and what has influenced its development to the current state.

Historical Context

The Historical Context is fundamental in setting the stage for the entire literature review. This section is not just a chronology of events or developments; it’s a curated narrative that highlights the key milestones and turning points that have significantly impacted the topic. 

By examining the historical evolution, the review establishes a timeline of how understanding and perspectives have shifted over the years.

Summary Of Key Historical Developments

This involves identifying and summarizing the major breakthroughs, shifts in thinking, or seminal works that have shaped the topic. It’s important to focus on developments that have a direct relevance to the current understanding and state of the subject. For example, if the topic is about the evolution of renewable energy technologies, this part would outline the initial discovery and use of renewable sources, significant technological innovations, and pivotal policy decisions that have influenced the field.

Relevance Of Historical Context To The Topic

After outlining the key historical developments, it’s crucial to connect these events to the present topic. This means discussing how past events have laid the groundwork for current theories, practices, or debates within the field. It involves analyzing the impact of historical milestones on the subject matter, and explaining how they have contributed to current knowledge, challenges, and research questions. This section makes it clear why understanding history is essential for anyone researching or studying the topic today.

Current State Of The Topic

Moving from the historical context, the review transitions to the present with the Current State of the Topic. This part assesses the latest research, trends, debates, and technological advancements that define the subject area at the moment.

Current Trends Or Updates

Here, the focus shifts to what is happening in the field right now. This could include recent research findings, emerging theories, new methodologies, or the latest technological innovations. The aim is to provide a snapshot of the current research landscape, identifying what themes, questions, or problems are being actively explored. For instance, in the context of digital marketing, this might involve discussing the rise of artificial intelligence in customer relationship management or the impact of social media trends on marketing strategies.

Impact Of These Trends On The Subject Matter

The final step is to assess the implications of these current trends for the topic. This includes considering how recent developments have advanced the field, the challenges they present, and the opportunities they open up for future research. It’s about connecting the dots between what’s happening now and what it means for the subject area moving forward. This not only helps to frame the research questions that the literature review will address but also sets the stage for identifying gaps in the current knowledge, thereby guiding the direction of future studies.

Also Read: What is a literature review? Get the concept and start using it

When doing a literature review, it’s essential to lay a solid foundation for your exploration through a well-defined conceptual framework. This framework acts as a compass, guiding your review’s direction by establishing the key concepts, theories, and perspectives that underpin your topic. 

Definitions And Descriptions

Before diving into the depths of your literature review, it’s crucial to start with the basics. This means clearly identifying and defining the key concepts related to your topic. Think of this as setting the stage for your readers, ensuring they have a clear understanding of the fundamental terms and ideas you will be exploring.

Key Concepts Related To The Topic

Begin by listing the essential concepts central to your review. These are the building blocks of your topic, the terms that will repeatedly appear throughout your exploration. 

Detailed Definitions And Their Relevance

Once you’ve identified these concepts, provide precise and comprehensive definitions for each. Don’t hesitate to explore different dimensions or interpretations of these terms, as this can enrich your readers’ understanding. More importantly, discuss why these concepts are crucial to your review. How do they shape the scope of your exploration? How do they relate to each other and to the broader topic? This step ensures that your readers are not just familiar with the terms but also understand their significance within your review’s context.

Theoretical Perspectives

With the key concepts clearly defined, it’s time to frame your literature review within relevant theoretical perspectives. This is where you align your exploration with existing theories, models, or frameworks that provide insights into your topic.

Important Theories Related To The Topic

Identify the theories that are foundational to your topic. These could range from well-established theories that have long guided research in your field to more contemporary models that offer new insights. For example, a review of organizational behavior might draw on theories of motivation, leadership styles, and organizational culture.

Evaluation Of These Theories And Their Influence On The Topic

After pinpointing the relevant theories, critically assess their contributions to the topic. Consider questions like: How have these theories shaped understanding of the topic? What insights do they offer, and where do they fall short? Are there controversies or debates surrounding these theories? This evaluation not only deepens your review’s analytical depth but also positions your work within the larger academic conversation.

Synthesis And Evaluation In Literature Reviews

The “Synthesis and Evaluation” section is where your literature review truly comes to life. Here, you’re not just summarizing what others have said; you’re weaving together diverse strands of research to present a cohesive picture of the topic at hand.

Comparison And Contrast Of Sources

Synthesizing the literature involves more than listing findings from various studies; it’s about drawing connections between them, highlighting areas of agreement and dispute, and weaving these into a narrative that adds depth and breadth to your understanding of the topic.

Comparative Analysis

Start by grouping your sources based on similarities in their findings, methodologies, or theoretical approaches. This clustering will help you identify trends and common themes across the literature. For example, if several studies have found similar outcomes under comparable conditions, these findings can be grouped to strengthen a particular argument or observation about the topic.

Contrasts Or Conflicts Among Sources

Equally important is the identification of discrepancies in the literature. Do some studies present findings that directly contradict others? Are there differences in how researchers have interpreted similar data? Highlighting these conflicts is crucial, as it can indicate areas where the topic is still evolving or where further research is needed. It also shows your ability to critically engage with the material, a hallmark of scholarly rigor.

Analysis Of Gaps In Literature

One of your primary tasks in the synthesis and evaluation section is to identify what’s missing in the current body of research. This requires a critical eye and a deep understanding of both your topic and the broader field in which it resides.

Identification Of Research Gaps

As you comb through the literature, ask yourself: What questions remain unanswered? Are there underexplored areas or populations? Perhaps certain methodologies have been overlooked, or theoretical perspectives have not been considered. Pinpointing these gaps is not a mere exercise in academic critique; it’s a vital step in advancing knowledge within the field.

Implications Of These Gaps For Future Research

Highlighting gaps in the literature sets the stage for future studies. It’s where you, as the reviewer, can suggest new research directions that could fill these voids or further explore the topic. Discussing the implications of these gaps not only enriches your review but also contributes to the ongoing scholarly conversation. 

Conclusion For Your Literature Review

The conclusion of your literature review is where you bring together all the strands of your argument, synthesizing the insights gained and highlighting the significance of your findings. It’s not just a summary of what has been discussed; it’s an opportunity to underscore the relevance of the review, reflect on the broader implications of your synthesis and evaluation, and suggest directions for future research. 

Summary Of Key Points

Start your conclusion by succinctly summarizing the main points and findings of your review. This isn’t about rehashing every detail but rather about distilling the essence of your exploration. Highlight the critical trends, themes, and conflicts you’ve uncovered, and remind your readers of the significance of these discoveries.

Relevance And Implications Of The Literature For The Topic

Next, focus on the relevance and implications of your findings. This involves stepping back to consider the bigger picture—how does your literature review contribute to the understanding of your topic? Discuss the impact of the trends and gaps you’ve identified on the field, and elaborate on how your synthesis of the literature advances or enriches existing knowledge.

Reflection On The Research Process

Reflecting on the research process itself can provide valuable insights. Consider discussing the challenges you encountered in navigating the literature, such as dealing with conflicting findings or the scarcity of research on certain aspects of your topic. 

Directions For Future Research

One of the most critical aspects of your conclusion is to suggest directions for future research. Be as precise as possible, whether suggesting new methodologies, theoretical frameworks, or specific topics that warrant deeper investigation.

Final Thoughts

End your conclusion with a strong closing statement that reiterates the value of your literature review. Emphasize the importance of continued research on your topic and the potential it holds for advanced understanding within your field. A compelling conclusion reaffirms the significance of your work, leaving your readers with a clear sense of its contribution and the urgent need for further exploration.

Reference List In Your Literature Review

The Reference List is the backbone of your literature review, providing a comprehensive compilation of all the sources you’ve cited throughout your exploration. It’s not merely a formality but a crucial component that lends credibility and rigor to your work.

Importance Of Accuracy And Consistency

The cornerstone of a reliable Reference List is accuracy and consistency in citation style. Whether you’re adhering to APA , MLA , Chicago , or another academic citation format, it’s vital to apply the rules with precision. This includes correctly formatting author names, publication dates, titles, and publication details. 

Organizing Your References

While different citation styles have their own rules for listing references, organizing them in a way that enhances readability and accessibility is universally beneficial. Alphabetical order by the author’s last name is the most common method, as it allows readers to easily locate sources.

Comprehensive Coverage

Your Reference List should be exhaustive, including every work you’ve cited in your review. This extends beyond journal articles and books to encompass reports, conference papers, online resources, and any other materials that have informed your analysis.

The Value Of Annotations

While not always required, providing brief annotations for key sources can add tremendous value to your Reference List. An annotated bibliography offers a succinct summary of each source’s main arguments, methodologies, and findings, as well as its relevance to your literature review.

Digital Accessibility

In today’s digital age, considering the accessibility of your referenced works can greatly enhance the utility of your Reference List. Whenever possible, include Digital Object Identifiers (DOIs) or stable URLs for online sources, ensuring readers can directly access the materials. 

Also read: What Is A DOI? Exploring The Purpose And Importance

Reflecting On Ethical Scholarship

Finally, your Reference List is a reflection of ethical scholarship. By accurately citing all the sources that have informed your work, you’re honoring the intellectual property of other researchers and upholding the academic community’s standards of integrity and respect. 

Crafting a meticulous Reference List is an essential aspect of your literature review that underscores the credibility, depth, and ethical foundation of your research. By adhering to the principles of accuracy, comprehensiveness, and accessibility, you not only facilitate further inquiry but also pay homage to the collective endeavor of knowledge advancement in your field.

Related Article: Navigating the AMA Citation Format: Best Tips for Referencing

In conclusion, writing a literature review involves meticulous structuring, beginning with an engaging introduction that sets the stage, followed by a detailed exploration of the topic’s background, including its historical context and current state. 

A robust conceptual framework lays the groundwork for analysis, leading to a critical synthesis and evaluation of relevant literature. 

The conclusion ties together the review’s key findings and implications, while the reference list meticulously catalogs all cited works. Mastering each section ensures a comprehensive and insightful review, essential for advancing academic understanding and contributing to scholarly discussions.

Related Article: Preliminary Literature Review: A Guide for Effective Research

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About Sowjanya Pedada

Sowjanya is a passionate writer and an avid reader. She holds MBA in Agribusiness Management and now is working as a content writer. She loves to play with words and hopes to make a difference in the world through her writings. Apart from writing, she is interested in reading fiction novels and doing craftwork. She also loves to travel and explore different cuisines and spend time with her family and friends.

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