what is a theme in a literature review

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How to Write a Thematic Literature Review: A Beginner’s Guide

Literature reviews provide a comprehensive understanding of existing knowledge in a particular field, offer insights into gaps and trends, and ultimately lay the foundation for innovative research. However, when tackling complex topics spanning multiple issues, the conventional approach of a standard literature review might not suffice. Many researchers present a literature review without giving any thought to its organization or structure, but this is where a thematic literature review comes into play. In this article, we will explore the significance of thematic reviews, delve into how and when to undertake them, and offer invaluable guidance on structuring and crafting a compelling thematic literature review.

Table of Contents

What is a thematic literature review?

A thematic literature review, also known as a thematic review, involves organizing and synthesizing the existing literature based on recurring themes or topics rather than a chronological or methodological sequence. Typically, when a student or researcher works intensively on their research there are many sub-domains or associated spheres of knowledge that one encounters. While these may not have a direct bearing on the main idea being explored, they provide a much-needed background or context to the discussion. This is where a thematic literature review is useful when dealing with complex research questions that involve multiple facets, as it allows for a more in-depth exploration of specific themes within the broader context.

When to opt for thematic literature review?

It is common practice for early career researchers and students to collate all the literature reviews they have undertaken under one single broad umbrella. However, when working on a literature review that involves multiple themes, lack of organization and structure can slow you down and create confusion. Deciding to embark on a thematic literature review is a strategic choice that should align with your research objectives. Here are some scenarios where opting for a thematic review is advantageous:

• Broad Research Questions: When your research question spans across various dimensions and cannot be adequately addressed through a traditional literature review.
• Interdisciplinary Research: In cases where your research draws from multiple disciplines, a thematic review helps in synthesizing diverse literature cohesively.
• Emerging Research Areas: When exploring emerging fields or topics with limited existing literature, a thematic review can provide valuable insights by focusing on available themes.
• Complex Issues: Thematic reviews are ideal for dissecting complex issues with multiple contributing factors or dimensions.

Advantages of a Thematic Literature Review

With better comprehension and broad insights, thematic literature reviews can help in identifying possible research gaps across themes. A thematic literature review has several advantages over a general or broad-based approach, especially for those working on multiple related themes.

• It provides a comprehensive understanding of specific themes within a broader context, allowing for a deep exploration of relevant literature.
• Thematic reviews offer a structured approach to organizing and synthesizing diverse sources, making it easier to identify trends, patterns, and gaps.
• Researchers can focus on key themes, enabling a more detailed analysis of specific aspects of the research question.
• Thematic reviews facilitate the integration of literature from various disciplines, offering a holistic view of the topic.
• Researchers can provide targeted recommendations or insights related to specific themes, aiding in the formulation of research hypotheses.

Now that we know the benefits of a thematic literature review, what is the best way to arrange reviewed literature in a thematic format?

How to write a thematic literature review

To effectively structure and write a thematic literature review, follow these key steps:

• Define Your Research Question: Clearly define the overarching research question or topic you aim to explore thematically. When writing a thematic literature review, go through different literature review sections of published research work and understand the subtle nuances associated with this approach.
• Identify Themes: Analyze the literature to identify recurring themes or topics relevant to your research question. Categorize the bibliography by dividing them into relevant clusters or units, each dealing with a specific issue. For example, you can divide a topic based on a theoretical approach, methodology, discipline or by epistemology. A theoretical review of related literature for example, may also look to break down geography or issues pertaining to a single country into its different parts or along rural and urban divides.
• Organize the Literature: Group the literature into thematic clusters based on the identified themes. Each cluster represents a different aspect of your research question. It is up to you to define the different narratives of thematic literature reviews depending on the project being undertaken; there is no one formal way of doing this. You can weigh how specific areas stack up against others in terms of existing literature or studies and how many more aspects may need to be added or further looked into.
• Review and Synthesize: Within each thematic cluster, review and synthesize the relevant literature, highlighting key findings and insights. It is recommended to identify any theme-related strengths or weaknesses using an analytical lens.
• Integrate Themes: Analyze how the themes interact with each other, draw linkages between earlier studies and see how they contribute to your own research. A thematic literature review presents readers with a comprehensive overview of the literature available on and around the research topic.
• Provide a Framework: Develop a framework or conceptual model that illustrates the relationships between the themes. Present the most relevant part of the thematic review toward the end and study it in greater detail as it reflects the literature most relevant and directly related to the main research topic.
• Conclusion: Conclude your thematic literature review by summarizing the key findings and their implications for your research question. Be sure to highlight any gaps or areas requiring further investigation in this section.
• Cite and Reference: It is important to remember that a thematic review of literature for a PhD thesis or research paper lends greater credibility to the student or researcher. So ensure that you properly cite and reference all sources according to your chosen citation style.
• Edit and Proofread: Take some time to review your work, ensure proper structure and flow and eliminate any language, grammar, or spelling errors that could deviate reader attention. This will help you deliver a well-structured and elegantly written thematic literature review.

Thematic literature review example

In essence, a thematic literature review allows researchers to dissect complex topics into smaller manageable themes, providing a more focused and structured approach to literature synthesis. This method empowers researchers to gain deeper insights, identify gaps, and generate new knowledge within the context of their research.

To illustrate the process mentioned above, let’s consider an example of a thematic literature review in the context of sustainable development. Imagine the overarching research question is: “What are the key factors influencing sustainable urban planning?” Potential themes could include environmental sustainability, social equity, economic viability, and governance. Each theme would have a dedicated section in the review, summarizing relevant literature and discussing how these factors intersect and impact sustainable urban planning. Close with a strong conclusion that highlights research gaps or areas of investigation. Finally, review and refine the thematic literature review, adding citations and references as required.

In conclusion, when tackling multifaceted research questions, a thematic literature review proves to be an indispensable tool for researchers and students alike. By adopting this approach, scholars can navigate the intricate web of existing literature, unearth meaningful patterns, and contribute to the advancement of knowledge in their respective fields. We hope the information in this article helps you create thematic reviews that illuminate your path to new discoveries and innovative insights.

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The Guide to Thematic Analysis

• What is Thematic Analysis?
• Advantages of Thematic Analysis
• Disadvantages of Thematic Analysis
• Thematic Analysis Examples
• How to Do Thematic Analysis
• Thematic Coding
• Collaborative Thematic Analysis
• Thematic Analysis Software
• Thematic Analysis in Mixed Methods Approach
• Abductive Thematic Analysis
• Deductive Thematic Analysis
• Inductive Thematic Analysis
• Reflexive Thematic Analysis
• Thematic Analysis in Observations
• Thematic Analysis in Surveys
• Thematic Analysis for Interviews
• Thematic Analysis for Focus Groups
• Thematic Analysis for Case Studies
• Thematic Analysis of Secondary Data
• Introduction

What is a thematic literature review?

Advantages of a thematic literature review, structuring and writing a thematic literature review.

• Thematic Analysis vs. Phenomenology
• Thematic vs. Content Analysis
• Thematic Analysis vs. Grounded Theory
• Thematic Analysis vs. Narrative Analysis
• Thematic Analysis vs. Discourse Analysis
• Thematic Analysis vs. Framework Analysis
• Thematic Analysis in Social Work
• Thematic Analysis in Psychology
• Thematic Analysis in Educational Research
• Thematic Analysis in UX Research
• How to Present Thematic Analysis Results
• Increasing Rigor in Thematic Analysis
• Peer Review in Thematic Analysis

Thematic Analysis Literature Review

A thematic literature review serves as a critical tool for synthesizing research findings within a specific subject area. By categorizing existing literature into themes, this method offers a structured approach to identify and analyze patterns and trends across studies. The primary goal is to provide a clear and concise overview that aids scholars and practitioners in understanding the key discussions and developments within a field. Unlike traditional literature reviews , which may adopt a chronological approach or focus on individual studies, a thematic literature review emphasizes the aggregation of findings through key themes and thematic connections. This introduction sets the stage for a detailed examination of what constitutes a thematic literature review, its benefits, and guidance on effectively structuring and writing one.

A thematic literature review methodically organizes and examines a body of literature by identifying, analyzing, and reporting themes found within texts such as journal articles, conference proceedings, dissertations, and other forms of academic writing. While a particular journal article may offer some specific insight, a synthesis of knowledge through a literature review can provide a comprehensive overview of theories across relevant sources in a particular field.

Unlike other review types that might organize literature chronologically or by methodology , a thematic review focuses on recurring themes or patterns across a collection of works. This approach enables researchers to draw together previous research to synthesize findings from different research contexts and methodologies, highlighting the overarching trends and insights within a field.

At its core, a thematic approach to a literature review research project involves several key steps. Initially, it requires the comprehensive collection of relevant literature that aligns with the review's research question or objectives. Following this, the process entails a meticulous analysis of the texts to identify common themes that emerge across the studies. These themes are not pre-defined but are discovered through a careful reading and synthesis of the literature.

The thematic analysis process is iterative, often involving the refinement of themes as the review progresses. It allows for the integration of a broad range of literature, facilitating a multidimensional understanding of the research topic. By organizing literature thematically, the review illuminates how various studies contribute to each theme, providing insights into the depth and breadth of research in the area.

A thematic literature review thus serves as a foundational element in research, offering a nuanced and comprehensive perspective on a topic. It not only aids in identifying gaps in the existing literature but also guides future research directions by underscoring areas that warrant further investigation. Ultimately, a thematic literature review empowers researchers to construct a coherent narrative that weaves together disparate studies into a unified analysis.

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Conducting a literature review thematically provides a comprehensive and nuanced synthesis of research findings, distinguishing it from other types of literature reviews. Its structured approach not only facilitates a deeper understanding of the subject area but also enhances the clarity and relevance of the review. Here are three significant advantages of employing a thematic analysis in literature reviews.

Enhanced understanding of the research field

Thematic literature reviews allow for a detailed exploration of the research landscape, presenting themes that capture the essence of the subject area. By identifying and analyzing these themes, reviewers can construct a narrative that reflects the complexity and multifaceted nature of the field.

This process aids in uncovering underlying patterns and relationships, offering a more profound and insightful examination of the literature. As a result, readers gain an enriched understanding of the key concepts, debates, and evolutionary trajectories within the research area.

Identification of research gaps and trends

One of the pivotal benefits of a thematic literature review is its ability to highlight gaps in the existing body of research. By systematically organizing the literature into themes, reviewers can pinpoint areas that are under-explored or warrant further investigation.

Additionally, this method can reveal emerging trends and shifts in research focus, guiding scholars toward promising areas for future study. The thematic structure thus serves as a roadmap, directing researchers toward uncharted territories and new research questions .

Facilitates comparative analysis and integration of findings

A thematic literature review excels in synthesizing findings from diverse studies, enabling a coherent and integrated overview. By concentrating on themes rather than individual studies, the review can draw comparisons and contrasts across different research contexts and methodologies . This comparative analysis enriches the review, offering a panoramic view of the field that acknowledges both consensus and divergence among researchers.

Moreover, the thematic framework supports the integration of findings, presenting a unified and comprehensive portrayal of the research area. Such integration is invaluable for scholars seeking to navigate the extensive body of literature and extract pertinent insights relevant to their own research questions or objectives.

The process of structuring and writing a thematic literature review is pivotal in presenting research in a clear, coherent, and impactful manner. This review type necessitates a methodical approach to not only unearth and categorize key themes but also to articulate them in a manner that is both accessible and informative to the reader. The following sections outline essential stages in the thematic analysis process for literature reviews , offering a structured pathway from initial planning to the final presentation of findings.

Identifying and categorizing themes

The initial phase in a thematic literature review is the identification of themes within the collected body of literature. This involves a detailed examination of texts to discern patterns, concepts, and ideas that recur across the research landscape. Effective identification hinges on a thorough and nuanced reading of the literature, where the reviewer actively engages with the content to extract and note significant thematic elements. Once identified, these themes must be meticulously categorized, often requiring the reviewer to discern between overarching themes and more nuanced sub-themes, ensuring a logical and hierarchical organization of the review content.

Analyzing and synthesizing themes

After categorizing the themes, the next step involves a deeper analysis and synthesis of the identified themes. This stage is critical for understanding the relationships between themes and for interpreting the broader implications of the thematic findings. Analysis may reveal how themes evolve over time, differ across methodologies or contexts, or converge to highlight predominant trends in the research area. Synthesis involves integrating insights from various studies to construct a comprehensive narrative that encapsulates the thematic essence of the literature, offering new interpretations or revealing gaps in existing research.

Presenting and discussing findings

The final stage of the thematic literature review is the discussion of the thematic findings in a research paper or presentation. This entails not only a descriptive account of identified themes but also a critical examination of their significance within the research field. Each theme should be discussed in detail, elucidating its relevance, the extent of research support, and its implications for future studies. The review should culminate in a coherent and compelling narrative that not only summarizes the key thematic findings but also situates them within the broader research context, offering valuable insights and directions for future inquiry.

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Theme Definition

What is theme? Here’s a quick and simple definition:

A theme is a universal idea, lesson, or message explored throughout a work of literature. One key characteristic of literary themes is their universality, which is to say that themes are ideas that not only apply to the specific characters and events of a book or play, but also express broader truths about human experience that readers can apply to their own lives. For instance, John Steinbeck's The Grapes of Wrath (about a family of tenant farmers who are displaced from their land in Oklahoma) is a book whose themes might be said to include the inhumanity of capitalism, as well as the vitality and necessity of family and friendship.

Some additional key details about theme:

• All works of literature have themes. The same work can have multiple themes, and many different works explore the same or similar themes.
• Themes are sometimes divided into thematic concepts and thematic statements . A work's thematic concept is the broader topic it touches upon (love, forgiveness, pain, etc.) while its thematic statement is what the work says about that topic. For example, the thematic concept of a romance novel might be love, and, depending on what happens in the story, its thematic statement might be that "Love is blind," or that "You can't buy love . "
• Themes are almost never stated explicitly. Oftentimes you can identify a work's themes by looking for a repeating symbol , motif , or phrase that appears again and again throughout a story, since it often signals a recurring concept or idea.

Theme Pronunciation

Here's how to pronounce theme: theem

Identifying Themes

Every work of literature—whether it's an essay, a novel, a poem, or something else—has at least one theme. Therefore, when analyzing a given work, it's always possible to discuss what the work is "about" on two separate levels: the more concrete level of the plot (i.e., what literally happens in the work), as well as the more abstract level of the theme (i.e., the concepts that the work deals with). Understanding the themes of a work is vital to understanding the work's significance—which is why, for example, every LitCharts Literature Guide uses a specific set of themes to help analyze the text.

Although some writers set out to explore certain themes in their work before they've even begun writing, many writers begin to write without a preconceived idea of the themes they want to explore—they simply allow the themes to emerge naturally through the writing process. But even when writers do set out to investigate a particular theme, they usually don't identify that theme explicitly in the work itself. Instead, each reader must come to their own conclusions about what themes are at play in a given work, and each reader will likely come away with a unique thematic interpretation or understanding of the work.

Symbol, Motif, and Leitwortstil

Writers often use three literary devices in particular—known as symbol , motif , and leitwortstil —to emphasize or hint at a work's underlying themes. Spotting these elements at work in a text can help you know where to look for its main themes.

• Near the beginning of Romeo and Juliet , Benvolio promises to make Romeo feel better about Rosaline's rejection of him by introducing him to more beautiful women, saying "Compare [Rosaline's] face with some that I shall show….and I will make thee think thy swan a crow." Here, the swan is a symbol for how Rosaline appears to the adoring Romeo, while the crow is a symbol for how she will soon appear to him, after he has seen other, more beautiful women.
• Symbols might occur once or twice in a book or play to represent an emotion, and in that case aren't necessarily related to a theme. However, if you start to see clusters of similar symbols appearing in a story, this may mean that the symbols are part of an overarching motif, in which case they very likely are related to a theme.
• For example, Shakespeare uses the motif of "dark vs. light" in Romeo and Juliet to emphasize one of the play's main themes: the contradictory nature of love. To develop this theme, Shakespeare describes the experience of love by pairing contradictory, opposite symbols next to each other throughout the play: not only crows and swans, but also night and day, moon and sun. These paired symbols all fall into the overall pattern of "dark vs. light," and that overall pattern is called a motif.
• A famous example is Kurt Vonnegut's repetition of the phrase "So it goes" throughout his novel Slaughterhouse Five , a novel which centers around the events of World War II. Vonnegut's narrator repeats the phrase each time he recounts a tragic story from the war, an effective demonstration of how the horrors of war have become normalized for the narrator. The constant repetition of the phrase emphasizes the novel's primary themes: the death and destruction of war, and the futility of trying to prevent or escape such destruction, and both of those things coupled with the author's skepticism that any of the destruction is necessary and that war-time tragedies "can't be helped."

Symbol, motif and leitwortstil are simply techniques that authors use to emphasize themes, and should not be confused with the actual thematic content at which they hint. That said, spotting these tools and patterns can give you valuable clues as to what might be the underlying themes of a work.

Thematic Concepts vs. Thematic Statements

A work's thematic concept is the broader topic it touches upon—for instance:

• Forgiveness

while its thematic statement is the particular argument the writer makes about that topic through his or her work, such as:

• Human judgement is imperfect.
• Love cannot be bought.
• Getting revenge on someone else will not fix your problems.
• Learning to forgive is part of becoming an adult.

Should You Use Thematic Concepts or Thematic Statements?

Some people argue that when describing a theme in a work that simply writing a thematic concept is insufficient, and that instead the theme must be described in a full sentence as a thematic statement. Other people argue that a thematic statement, being a single sentence, usually creates an artificially simplistic description of a theme in a work and is therefore can actually be more misleading than helpful. There isn't really a right answer in this debate.

In our LitCharts literature study guides , we usually identify themes in headings as thematic concepts, and then explain the theme more fully in a few paragraphs. We find thematic statements limiting in fully exploring or explaining a the theme, and so we don't use them. Please note that this doesn't mean we only rely on thematic concepts—we spend paragraphs explaining a theme after we first identify a thematic concept. If you are asked to describe a theme in a text, you probably should usually try to at least develop a thematic statement about the text if you're not given the time or space to describe it more fully. For example, a statement that a book is about "the senselessness of violence" is a lot stronger and more compelling than just saying that the book is about "violence."

Identifying Thematic Statements

One way to try to to identify or describe the thematic statement within a particular work is to think through the following aspects of the text:

• Plot: What are the main plot elements in the work, including the arc of the story, setting, and characters. What are the most important moments in the story? How does it end? How is the central conflict resolved?
• Protagonist: Who is the main character, and what happens to him or her? How does he or she develop as a person over the course of the story?
• Prominent symbols and motifs: Are there any motifs or symbols that are featured prominently in the work—for example, in the title, or recurring at important moments in the story—that might mirror some of the main themes?

After you've thought through these different parts of the text, consider what their answers might tell you about the thematic statement the text might be trying to make about any given thematic concept. The checklist above shouldn't be thought of as a precise formula for theme-finding, but rather as a set of guidelines, which will help you ask the right questions and arrive at an interesting thematic interpretation.

Theme Examples

The following examples not only illustrate how themes develop over the course of a work of literature, but they also demonstrate how paying careful attention to detail as you read will enable you to come to more compelling conclusions about those themes.

Themes in F. Scott Fitzgerald's The Great Gatsby

Fitzgerald explores many themes in The Great Gatsby , among them the corruption of the American Dream .

• The story's narrator is Minnesota-born Nick Caraway, a New York bonds salesman. Nick befriends Jay Gatsby, the protagonist, who is a wealthy man who throws extravagant parties at his mansion.
• The central conflict of the novel is Gatsby's pursuit of Daisy, whom he met and fell in love with as a young man, but parted from during World War I.
• He makes a fortune illegally by bootlegging alcohol, to become the sort of wealthy man he believes Daisy is attracted to, then buys a house near her home, where she lives with her husband.
• While he does manage to re-enter Daisy's life, she ultimately abandons him and he dies as a result of her reckless, selfish behavior.
• Gatsby's house is on the water, and he stares longingly across the water at a green light that hangs at the edge of a dock at Daisy's house which sits across a the bay. The symbol of the light appears multiple times in the novel—during the early stages of Gatsby's longing for Daisy, during his pursuit of her, and after he dies without winning her love. It symbolizes both his longing for daisy and the distance between them (the distance of space and time) that he believes (incorrectly) that he can bridge. 
• In addition to the green light, the color green appears regularly in the novel. This motif of green broadens and shapes the symbolism of the green light and also influences the novel's themes. While green always remains associated with Gatsby's yearning for Daisy and the past, and also his ambitious striving to regain Daisy, it also through the motif of repeated green becomes associated with money, hypocrisy, and destruction. Gatsby's yearning for Daisy, which is idealistic in some ways, also becomes clearly corrupt in others, which more generally impacts what the novel is saying about dreams more generally and the American Dream in particular. 

Gatsby pursues the American Dream, driven by the idea that hard work can lead anyone from poverty to wealth, and he does so for a single reason: he's in love with Daisy. However, he pursues the dream dishonestly, making a fortune by illegal means, and ultimately fails to achieve his goal of winning Daisy's heart. Furthermore, when he actually gets close to winning Daisy's heart, she brings about his downfall. Through the story of Gatsby and Daisy, Fitzgerald expresses the point of view that the American Dream carries at its core an inherent corruption. You can read more about the theme of The American Dream in The Great Gatsby here .

Themes in Chinua Achebe's Things Fall Apart

In Things Fall Apart , Chinua Achebe explores the theme of the dangers of rigidly following tradition .

• Okonkwo is obsessed with embodying the masculine ideals of traditional Igbo warrior culture.
• Okonkwo's dedication to his clan's traditions is so extreme that it even alienates members of his own family, one of whom joins the Christians.
• The central conflict: Okonkwo's community adapts to colonization in order to survive, becoming less warlike and allowing the minor injustices that the colonists inflict upon them to go unchallenged. Okonkwo, however, refuses to adapt.
• At the end of the novel, Okonkwo impulsively kills a Christian out of anger. Recognizing that his community does not support his crime, Okonkwo kills himself in despair.
• Clanswomen who give birth to twins abandon the babies in the forest to die, according to traditional beliefs that twins are evil.
• Okonkwo kills his beloved adopted son, a prisoner of war, according to the clan's traditions.
• Okonkwo sacrifices a goat in repentence, after severely beating his wife during the clan's holy week.

Through the tragic story of Okonkwo, Achebe is clearly dealing with the theme of tradition, but a close examination of the text reveals that he's also making a clear thematic statement that following traditions too rigidly leads people to the greatest sacrifice of all: that of personal agency . You can read more about this theme in Things Fall Apart   here .

Themes in Robert Frost's The Road Not Taken

Poem's have themes just as plot-driven narratives do. One theme that Robert Frost explores in this famous poem,  The Road Not Taken ,  is the illusory nature of free will .

• The poem's speaker stands at a fork in the road, in a "yellow wood."
• He (or she) looks down one path as far as possible, then takes the other, which seems less worn.
• The speaker then admits that the paths are about equally worn—there's really no way to tell the difference—and that a layer of leaves covers both of the paths, indicating that neither has been traveled recently.
• After taking the second path, the speaker finds comfort in the idea of taking the first path sometime in the future, but acknowledges that he or she is unlikely to ever return to that particular fork in the woods.
• The speaker imagines how, "with a sigh" she will tell someone in the future, "I took the road less travelled—and that has made all the difference."
• By wryly predicting his or her own need to romanticize, and retroactively justify, the chosen path, the speaker injects the poem with an unmistakeable hint of irony .
• The speaker's journey is a symbol for life, and the two paths symbolize different life paths, with the road "less-travelled" representing the path of an individualist or lone-wolf. The fork where the two roads diverge represents an important life choice. The road "not taken" represents the life path that the speaker would have pursued had he or she had made different choices.

Frost's speaker has reached a fork in the road, which—according to the symbolic language of the poem—means that he or she must make an important life decision. However, the speaker doesn't really know anything about the choice at hand: the paths appear to be the same from the speaker's vantage point, and there's no way he or she can know where the path will lead in the long term. By showing that the only truly informed choice the speaker makes is how he or she explains their decision after they have already made it , Frost suggests that although we pretend to make our own choices, our lives are actually governed by chance.

What's the Function of Theme in Literature?

Themes are a huge part of what readers ultimately take away from a work of literature when they're done reading it. They're the universal lessons and ideas that we draw from our experiences of works of art: in other words, they're part of the whole reason anyone would want to pick up a book in the first place!

It would be difficult to write any sort of narrative that did not include any kind of theme. The narrative itself would have to be almost completely incoherent in order to seem theme-less, and even then readers would discern a theme about incoherence and meaninglessness. So themes are in that sense an intrinsic part of nearly all writing. At the same time, the themes that a writer is interested in exploring will significantly impact nearly all aspects of how a writer chooses to write a text. Some writers might know the themes they want to explore from the beginning of their writing process, and proceed from there. Others might have only a glimmer of an idea, or have new ideas as they write, and so the themes they address might shift and change as they write. In either case, though, the writer's ideas about his or her themes will influence how they write. 

One additional key detail about themes and how they work is that the process of identifying and interpreting them is often very personal and subjective. The subjective experience that readers bring to interpreting a work's themes is part of what makes literature so powerful: reading a book isn't simply a one-directional experience, in which the writer imparts their thoughts on life to the reader, already distilled into clear thematic statements. Rather, the process of reading and interpreting a work to discover its themes is an exchange in which readers parse the text to tease out the themes they find most relevant to their personal experience and interests.

Other Helpful Theme Resources

• The Wikipedia Page on Theme: An in-depth explanation of theme that also breaks down the difference between thematic concepts and thematic statements.
• The Dictionary Definition of Theme: A basic definition and etymology of the term.
• In this instructional video , a teacher explains her process for helping students identify themes.

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How to write a literature review

Are you writing a literature review as part of a final year project, dissertation, or thesis, or as a standalone piece of work? This page will work through a process of organising and synthesising your sources and then writing a clear and critical final review.

What is a literature review?

A literature review is an account of the current thinking in a specific area of study. Its purpose is to introduce the reader to what has gone before and often to provide you with a foundation that you can build on with your own research. This traditional form of review is sometimes also referred to as a narrative review.

A literature review will often form a section or chapter of a larger piece of research work, such as a dissertation, thesis, or final year project.  It can also be a standalone piece of work.  

A literature review will usually do some or all of the following:

• Introduce the reader to a specific area of interest.
• Organise relevant sources thematically, starting with the more general, broader themes and narrowing towards the most specific themes.
• Introduce key theories relevant to the area of study.
• Define your understanding of important terms or language used in the research.
• Include only the most relevant, important or influential sources, carefully selected. It is about quality not quantity!
• Identify gaps or limitations in existing research.

Considering a body of scholarship as a whole (or in relation to each of your themes) will allow you to 'synthesise' multiple sources and produce an overall summary.

Developing a literature review will help you to develop a level of expertise in your chosen area. By consulting and including a unique combination of sources, you will be able to formulate an informed and original perspective.  Where relevant, this can drive forward your ongoing research.

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A systematic review is a research methodology, often following a standardised and replicable search method and reporting structure that is specific to your discipline. Visit our guidance on systematic reviews for more information.

Organising your sources

As you encounter more and more relevant sources, you will face an ever-expanding amount of reading for yourself. It would take years to read through all of the literature in a specific field from start to finish.

Academic reading, and particularly the process of 'reading around' a topic, is about selective, or targeted reading. Visit our Reading and understanding information Hub to explore approaches to reading for different purposes.

Creating a Literature Matrix can help you to identify the key things that you want to take away from each source. A literature matrix is a simple spreadsheet where you select column titles to suit the aims of your literature review. Are you interested in the research methodology, the scale of the research, the main conclusions, or something else entirely?

Once you have scanned through a source and pulled out the points you are interested in, you can move onto the next source. Organising your reading in this way will also allow you to identify key themes that are emerging in your reading, which you will be able to use later on to plan your review.

You may want to use a reference management tool to help organise and produce your bibliography. Visit the University of Sheffield Library Reference Management pages here .

Make a copy of our Literature matrix template (Google Sheet) and add/delete columns based on the information you want to collect during your search.  Using a spreadsheet means that you can filter and sort your sources, for example, into chronological order, or alphabetically by author.

This downloadable example literature matrix shows how you can lay out your columns.

Synthesising your sources

Once you have a number of sources to work with, you will start to identify key themes emerging. At this point you can start to organise your sources systematically to develop and explore those themes. Can you organise your themes from the broadest to the narrowest and most specific?

A synthesis matrix will help you to identify a thematic structure for your literature review and to understand how the sources that you have found relate to one another. A synthesis matrix is a further spreadsheet that organises your sources by theme and includes a synthesis column, where you can begin to draw out comparisons between the sources. 

Once you have identified a number of sources for each theme in your matrix, you should be able to identify the following:

• Do the sources build on or develop one another? This may be a chronological process.
• Do the sources challenge or contradict one another? Do they reveal a debate within the field?
• Do the sources identify an area of particular interest or a gap in the field?
• Do the sources help to fill in gaps or complete a bigger picture?

Your synthesis column provides an opportunity for you to comment on multiple sources considered as a whole. It is a space for your critical voice and interpretation, which is a key part of writing a successful literature review.

Make a copy of our synthesis matrix (Google Sheet) to organise your themes and plan how the relevant sources can be synthesised.

Download a completed example synthesis matrix from NC State University (PDF, 34Kb)

Visit our Producing a literature review interactive tutorial - for further guidance.

View tutorial as a DOCX (349 KB)

Writing your review

Once you have done the background reading and organised your sources using a synthesis matrix, the job of writing your review is simply about adding flesh to the bones. You will need to write your review as a narrative account, but you can use your matrix as a framework to help you do so.

A literature review will usually follow a simple structure:

• Introduction: what is the overall topic area and how have you broken your review down into themes?
• Theme 1: the broadest, most top-level area (perhaps including some background theory that may have influenced your thinking).
• Theme 2, theme 3, theme 4, etc. Your themes should get progressively more specific and closer to the focus of your research.
• Conclusion: how has this informed your thinking and (if the review is part of a bigger project) what are your research aims and objectives? 

Your review may be broken down by section headings or be a continuous flow with themes clearly separated in a paragraph structure. Each section or paragraph will describe that theme and finish by summarising your overview of a theme (the synthesis part of the matrix above, which includes your critical analysis). 

Our web page How to structure a paragrap h has further guidance to ensure your paragraphs are clear and contain your synthesis and critical analysis.

For advice and feedback on your own review, including referencing, synthesis and academic arguments, please book a writing advisory service appointment.

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