why do we need literature review in research

Why is it important to do a literature review in research?

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 “A substantive, thorough, sophisticated literature review is a precondition for doing substantive, thorough, sophisticated research”. Boote and Baile 2005

Authors of manuscripts treat writing a literature review as a routine work or a mere formality. But a seasoned one knows the purpose and importance of a well-written literature review.  Since it is one of the basic needs for researches at any level, they have to be done vigilantly. Only then the reader will know that the basics of research have not been neglected.

The aim of any literature review is to summarize and synthesize the arguments and ideas of existing knowledge in a particular field without adding any new contributions.   Being built on existing knowledge they help the researcher to even turn the wheels of the topic of research.  It is possible only with profound knowledge of what is wrong in the existing findings in detail to overpower them.  For other researches, the literature review gives the direction to be headed for its success. 

The common perception of literature review and reality:

As per the common belief, literature reviews are only a summary of the sources related to the research. And many authors of scientific manuscripts believe that they are only surveys of what are the researches are done on the chosen topic.  But on the contrary, it uses published information from pertinent and relevant sources like

• Scholarly books
• Scientific papers
• Latest studies in the field
• Established school of thoughts
• Relevant articles from renowned scientific journals

and many more for a field of study or theory or a particular problem to do the following:

• Summarize into a brief account of all information
• Synthesize the information by restructuring and reorganizing
• Critical evaluation of a concept or a school of thought or ideas
• Familiarize the authors to the extent of knowledge in the particular field
• Encapsulate
• Compare & contrast

By doing the above on the relevant information, it provides the reader of the scientific manuscript with the following for a better understanding of it:

• It establishes the authors’  in-depth understanding and knowledge of their field subject
• It gives the background of the research
• Portrays the scientific manuscript plan of examining the research result
• Illuminates on how the knowledge has changed within the field
• Highlights what has already been done in a particular field
• Information of the generally accepted facts, emerging and current state of the topic of research
• Identifies the research gap that is still unexplored or under-researched fields
• Demonstrates how the research fits within a larger field of study
• Provides an overview of the sources explored during the research of a particular topic

Importance of literature review in research:

The importance of literature review in scientific manuscripts can be condensed into an analytical feature to enable the multifold reach of its significance.  It adds value to the legitimacy of the research in many ways:

• Provides the interpretation of existing literature in light of updated developments in the field to help in establishing the consistency in knowledge and relevancy of existing materials
• It helps in calculating the impact of the latest information in the field by mapping their progress of knowledge.
• It brings out the dialects of contradictions between various thoughts within the field to establish facts
• The research gaps scrutinized initially are further explored to establish the latest facts of theories to add value to the field
• Indicates the current research place in the schema of a particular field
• Provides information for relevancy and coherency to check the research
• Apart from elucidating the continuance of knowledge, it also points out areas that require further investigation and thus aid as a starting point of any future research
• Justifies the research and sets up the research question
• Sets up a theoretical framework comprising the concepts and theories of the research upon which its success can be judged
• Helps to adopt a more appropriate methodology for the research by examining the strengths and weaknesses of existing research in the same field
• Increases the significance of the results by comparing it with the existing literature
• Provides a point of reference by writing the findings in the scientific manuscript
• Helps to get the due credit from the audience for having done the fact-finding and fact-checking mission in the scientific manuscripts
• The more the reference of relevant sources of it could increase more of its trustworthiness with the readers
• Helps to prevent plagiarism by tailoring and uniquely tweaking the scientific manuscript not to repeat other’s original idea
• By preventing plagiarism , it saves the scientific manuscript from rejection and thus also saves a lot of time and money
• Helps to evaluate, condense and synthesize gist in the author’s own words to sharpen the research focus
• Helps to compare and contrast to  show the originality and uniqueness of the research than that of the existing other researches
• Rationalizes the need for conducting the particular research in a specified field
• Helps to collect data accurately for allowing any new methodology of research than the existing ones
• Enables the readers of the manuscript to answer the following questions of its readers for its better chances for publication
• What do the researchers know?
• What do they not know?
• Is the scientific manuscript reliable and trustworthy?
• What are the knowledge gaps of the researcher?

22. It helps the readers to identify the following for further reading of the scientific manuscript:

• What has been already established, discredited and accepted in the particular field of research
• Areas of controversy and conflicts among different schools of thought
• Unsolved problems and issues in the connected field of research
• The emerging trends and approaches
• How the research extends, builds upon and leaves behind from the previous research

A profound literature review with many relevant sources of reference will enhance the chances of the scientific manuscript publication in renowned and reputed scientific journals .

References:

http://www.math.montana.edu/jobo/phdprep/phd6.pdf

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Conducting a literature review: why do a literature review, why do a literature review.

• How To Find "The Literature"
• Found it -- Now What?

Besides the obvious reason for students -- because it is assigned! -- a literature review helps you explore the research that has come before you, to see how your research question has (or has not) already been addressed.

You identify:

• core research in the field
• experts in the subject area
• methodology you may want to use (or avoid)
• gaps in knowledge -- or where your research would fit in

It Also Helps You:

• Publish and share your findings
• Justify requests for grants and other funding
• Identify best practices to inform practice
• Set wider context for a program evaluation
• Compile information to support community organizing

Great brief overview, from NCSU

Want To Know More?

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• Last Updated: Apr 25, 2024 1:10 PM
• URL: https://guides.lib.berkeley.edu/litreview

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What is a Literature Review? How to Write It (with Examples)

A literature review is a critical analysis and synthesis of existing research on a particular topic. It provides an overview of the current state of knowledge, identifies gaps, and highlights key findings in the literature. 1 The purpose of a literature review is to situate your own research within the context of existing scholarship, demonstrating your understanding of the topic and showing how your work contributes to the ongoing conversation in the field. Learning how to write a literature review is a critical tool for successful research. Your ability to summarize and synthesize prior research pertaining to a certain topic demonstrates your grasp on the topic of study, and assists in the learning process. 

Table of Contents

• What is the purpose of literature review? 
• a. Habitat Loss and Species Extinction: 
• b. Range Shifts and Phenological Changes: 
• c. Ocean Acidification and Coral Reefs: 
• d. Adaptive Strategies and Conservation Efforts: 
• How to write a good literature review 
• Choose a Topic and Define the Research Question: 
• Decide on the Scope of Your Review: 
• Select Databases for Searches: 
• Conduct Searches and Keep Track: 
• Review the Literature: 
• Organize and Write Your Literature Review: 
• Frequently asked questions 

What is a literature review?

A well-conducted literature review demonstrates the researcher’s familiarity with the existing literature, establishes the context for their own research, and contributes to scholarly conversations on the topic. One of the purposes of a literature review is also to help researchers avoid duplicating previous work and ensure that their research is informed by and builds upon the existing body of knowledge.

What is the purpose of literature review?

A literature review serves several important purposes within academic and research contexts. Here are some key objectives and functions of a literature review: 2  

• Contextualizing the Research Problem: The literature review provides a background and context for the research problem under investigation. It helps to situate the study within the existing body of knowledge. 
• Identifying Gaps in Knowledge: By identifying gaps, contradictions, or areas requiring further research, the researcher can shape the research question and justify the significance of the study. This is crucial for ensuring that the new research contributes something novel to the field. 
• Understanding Theoretical and Conceptual Frameworks: Literature reviews help researchers gain an understanding of the theoretical and conceptual frameworks used in previous studies. This aids in the development of a theoretical framework for the current research. 
• Providing Methodological Insights: Another purpose of literature reviews is that it allows researchers to learn about the methodologies employed in previous studies. This can help in choosing appropriate research methods for the current study and avoiding pitfalls that others may have encountered. 
• Establishing Credibility: A well-conducted literature review demonstrates the researcher’s familiarity with existing scholarship, establishing their credibility and expertise in the field. It also helps in building a solid foundation for the new research. 
• Informing Hypotheses or Research Questions: The literature review guides the formulation of hypotheses or research questions by highlighting relevant findings and areas of uncertainty in existing literature. 

Literature review example

Let’s delve deeper with a literature review example: Let’s say your literature review is about the impact of climate change on biodiversity. You might format your literature review into sections such as the effects of climate change on habitat loss and species extinction, phenological changes, and marine biodiversity. Each section would then summarize and analyze relevant studies in those areas, highlighting key findings and identifying gaps in the research. The review would conclude by emphasizing the need for further research on specific aspects of the relationship between climate change and biodiversity. The following literature review template provides a glimpse into the recommended literature review structure and content, demonstrating how research findings are organized around specific themes within a broader topic. 

Literature Review on Climate Change Impacts on Biodiversity:

Climate change is a global phenomenon with far-reaching consequences, including significant impacts on biodiversity. This literature review synthesizes key findings from various studies: 

a. Habitat Loss and Species Extinction:

Climate change-induced alterations in temperature and precipitation patterns contribute to habitat loss, affecting numerous species (Thomas et al., 2004). The review discusses how these changes increase the risk of extinction, particularly for species with specific habitat requirements. 

b. Range Shifts and Phenological Changes:

Observations of range shifts and changes in the timing of biological events (phenology) are documented in response to changing climatic conditions (Parmesan & Yohe, 2003). These shifts affect ecosystems and may lead to mismatches between species and their resources. 

c. Ocean Acidification and Coral Reefs:

The review explores the impact of climate change on marine biodiversity, emphasizing ocean acidification’s threat to coral reefs (Hoegh-Guldberg et al., 2007). Changes in pH levels negatively affect coral calcification, disrupting the delicate balance of marine ecosystems. 

d. Adaptive Strategies and Conservation Efforts:

Recognizing the urgency of the situation, the literature review discusses various adaptive strategies adopted by species and conservation efforts aimed at mitigating the impacts of climate change on biodiversity (Hannah et al., 2007). It emphasizes the importance of interdisciplinary approaches for effective conservation planning. 

How to write a good literature review

Writing a literature review involves summarizing and synthesizing existing research on a particular topic. A good literature review format should include the following elements. 

Introduction: The introduction sets the stage for your literature review, providing context and introducing the main focus of your review. 

• Opening Statement: Begin with a general statement about the broader topic and its significance in the field. 
• Scope and Purpose: Clearly define the scope of your literature review. Explain the specific research question or objective you aim to address. 
• Organizational Framework: Briefly outline the structure of your literature review, indicating how you will categorize and discuss the existing research. 
• Significance of the Study: Highlight why your literature review is important and how it contributes to the understanding of the chosen topic. 
• Thesis Statement: Conclude the introduction with a concise thesis statement that outlines the main argument or perspective you will develop in the body of the literature review. 

Body: The body of the literature review is where you provide a comprehensive analysis of existing literature, grouping studies based on themes, methodologies, or other relevant criteria. 

• Organize by Theme or Concept: Group studies that share common themes, concepts, or methodologies. Discuss each theme or concept in detail, summarizing key findings and identifying gaps or areas of disagreement. 
• Critical Analysis: Evaluate the strengths and weaknesses of each study. Discuss the methodologies used, the quality of evidence, and the overall contribution of each work to the understanding of the topic. 
• Synthesis of Findings: Synthesize the information from different studies to highlight trends, patterns, or areas of consensus in the literature. 
• Identification of Gaps: Discuss any gaps or limitations in the existing research and explain how your review contributes to filling these gaps. 
• Transition between Sections: Provide smooth transitions between different themes or concepts to maintain the flow of your literature review. 

Conclusion: The conclusion of your literature review should summarize the main findings, highlight the contributions of the review, and suggest avenues for future research. 

• Summary of Key Findings: Recap the main findings from the literature and restate how they contribute to your research question or objective. 
• Contributions to the Field: Discuss the overall contribution of your literature review to the existing knowledge in the field. 
• Implications and Applications: Explore the practical implications of the findings and suggest how they might impact future research or practice. 
• Recommendations for Future Research: Identify areas that require further investigation and propose potential directions for future research in the field. 
• Final Thoughts: Conclude with a final reflection on the importance of your literature review and its relevance to the broader academic community. 

Conducting a literature review

Conducting a literature review is an essential step in research that involves reviewing and analyzing existing literature on a specific topic. It’s important to know how to do a literature review effectively, so here are the steps to follow: 1  

Choose a Topic and Define the Research Question:

• Select a topic that is relevant to your field of study. 
• Clearly define your research question or objective. Determine what specific aspect of the topic do you want to explore? 

Decide on the Scope of Your Review:

• Determine the timeframe for your literature review. Are you focusing on recent developments, or do you want a historical overview? 
• Consider the geographical scope. Is your review global, or are you focusing on a specific region? 
• Define the inclusion and exclusion criteria. What types of sources will you include? Are there specific types of studies or publications you will exclude? 

Select Databases for Searches:

• Identify relevant databases for your field. Examples include PubMed, IEEE Xplore, Scopus, Web of Science, and Google Scholar. 
• Consider searching in library catalogs, institutional repositories, and specialized databases related to your topic. 

Conduct Searches and Keep Track:

• Develop a systematic search strategy using keywords, Boolean operators (AND, OR, NOT), and other search techniques. 
• Record and document your search strategy for transparency and replicability. 
• Keep track of the articles, including publication details, abstracts, and links. Use citation management tools like EndNote, Zotero, or Mendeley to organize your references. 

Review the Literature:

• Evaluate the relevance and quality of each source. Consider the methodology, sample size, and results of studies. 
• Organize the literature by themes or key concepts. Identify patterns, trends, and gaps in the existing research. 
• Summarize key findings and arguments from each source. Compare and contrast different perspectives. 
• Identify areas where there is a consensus in the literature and where there are conflicting opinions. 
• Provide critical analysis and synthesis of the literature. What are the strengths and weaknesses of existing research? 

Organize and Write Your Literature Review:

• Literature review outline should be based on themes, chronological order, or methodological approaches. 
• Write a clear and coherent narrative that synthesizes the information gathered. 
• Use proper citations for each source and ensure consistency in your citation style (APA, MLA, Chicago, etc.). 
• Conclude your literature review by summarizing key findings, identifying gaps, and suggesting areas for future research. 

The literature review sample and detailed advice on writing and conducting a review will help you produce a well-structured report. But remember that a literature review is an ongoing process, and it may be necessary to revisit and update it as your research progresses. 

Frequently asked questions

A literature review is a critical and comprehensive analysis of existing literature (published and unpublished works) on a specific topic or research question and provides a synthesis of the current state of knowledge in a particular field. A well-conducted literature review is crucial for researchers to build upon existing knowledge, avoid duplication of efforts, and contribute to the advancement of their field. It also helps researchers situate their work within a broader context and facilitates the development of a sound theoretical and conceptual framework for their studies.

Literature review is a crucial component of research writing, providing a solid background for a research paper’s investigation. The aim is to keep professionals up to date by providing an understanding of ongoing developments within a specific field, including research methods, and experimental techniques used in that field, and present that knowledge in the form of a written report. Also, the depth and breadth of the literature review emphasizes the credibility of the scholar in his or her field.  

Before writing a literature review, it’s essential to undertake several preparatory steps to ensure that your review is well-researched, organized, and focused. This includes choosing a topic of general interest to you and doing exploratory research on that topic, writing an annotated bibliography, and noting major points, especially those that relate to the position you have taken on the topic. 

Literature reviews and academic research papers are essential components of scholarly work but serve different purposes within the academic realm. 3 A literature review aims to provide a foundation for understanding the current state of research on a particular topic, identify gaps or controversies, and lay the groundwork for future research. Therefore, it draws heavily from existing academic sources, including books, journal articles, and other scholarly publications. In contrast, an academic research paper aims to present new knowledge, contribute to the academic discourse, and advance the understanding of a specific research question. Therefore, it involves a mix of existing literature (in the introduction and literature review sections) and original data or findings obtained through research methods. 

Literature reviews are essential components of academic and research papers, and various strategies can be employed to conduct them effectively. If you want to know how to write a literature review for a research paper, here are four common approaches that are often used by researchers.  Chronological Review: This strategy involves organizing the literature based on the chronological order of publication. It helps to trace the development of a topic over time, showing how ideas, theories, and research have evolved.  Thematic Review: Thematic reviews focus on identifying and analyzing themes or topics that cut across different studies. Instead of organizing the literature chronologically, it is grouped by key themes or concepts, allowing for a comprehensive exploration of various aspects of the topic.  Methodological Review: This strategy involves organizing the literature based on the research methods employed in different studies. It helps to highlight the strengths and weaknesses of various methodologies and allows the reader to evaluate the reliability and validity of the research findings.  Theoretical Review: A theoretical review examines the literature based on the theoretical frameworks used in different studies. This approach helps to identify the key theories that have been applied to the topic and assess their contributions to the understanding of the subject.  It’s important to note that these strategies are not mutually exclusive, and a literature review may combine elements of more than one approach. The choice of strategy depends on the research question, the nature of the literature available, and the goals of the review. Additionally, other strategies, such as integrative reviews or systematic reviews, may be employed depending on the specific requirements of the research.

The literature review format can vary depending on the specific publication guidelines. However, there are some common elements and structures that are often followed. Here is a general guideline for the format of a literature review:  Introduction:   Provide an overview of the topic.  Define the scope and purpose of the literature review.  State the research question or objective.  Body:   Organize the literature by themes, concepts, or chronology.  Critically analyze and evaluate each source.  Discuss the strengths and weaknesses of the studies.  Highlight any methodological limitations or biases.  Identify patterns, connections, or contradictions in the existing research.  Conclusion:   Summarize the key points discussed in the literature review.  Highlight the research gap.  Address the research question or objective stated in the introduction.  Highlight the contributions of the review and suggest directions for future research.

Both annotated bibliographies and literature reviews involve the examination of scholarly sources. While annotated bibliographies focus on individual sources with brief annotations, literature reviews provide a more in-depth, integrated, and comprehensive analysis of existing literature on a specific topic. The key differences are as follows: 

References 

• Denney, A. S., & Tewksbury, R. (2013). How to write a literature review.  Journal of criminal justice education ,  24 (2), 218-234. 
• Pan, M. L. (2016).  Preparing literature reviews: Qualitative and quantitative approaches . Taylor & Francis. 
• Cantero, C. (2019). How to write a literature review.  San José State University Writing Center . 

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• Literature Review: The What, Why and How-to Guide
• Introduction

Literature Review: The What, Why and How-to Guide — Introduction

• Getting Started
• How to Pick a Topic
• Strategies to Find Sources
• Evaluating Sources & Lit. Reviews
• Tips for Writing Literature Reviews
• Writing Literature Review: Useful Sites
• Citation Resources
• Other Academic Writings

What are Literature Reviews?

So, what is a literature review? "A literature review is an account of what has been published on a topic by accredited scholars and researchers. In writing the literature review, your purpose is to convey to your reader what knowledge and ideas have been established on a topic, and what their strengths and weaknesses are. As a piece of writing, the literature review must be defined by a guiding concept (e.g., your research objective, the problem or issue you are discussing, or your argumentative thesis). It is not just a descriptive list of the material available, or a set of summaries." Taylor, D.  The literature review: A few tips on conducting it . University of Toronto Health Sciences Writing Centre.

Goals of Literature Reviews

What are the goals of creating a Literature Review?  A literature could be written to accomplish different aims:

• To develop a theory or evaluate an existing theory
• To summarize the historical or existing state of a research topic
• Identify a problem in a field of research 

Baumeister, R. F., & Leary, M. R. (1997). Writing narrative literature reviews .  Review of General Psychology , 1 (3), 311-320.

What kinds of sources require a Literature Review?

• A research paper assigned in a course
• A thesis or dissertation
• A grant proposal
• An article intended for publication in a journal

All these instances require you to collect what has been written about your research topic so that you can demonstrate how your own research sheds new light on the topic.

Types of Literature Reviews

What kinds of literature reviews are written?

Narrative review: The purpose of this type of review is to describe the current state of the research on a specific topic/research and to offer a critical analysis of the literature reviewed. Studies are grouped by research/theoretical categories, and themes and trends, strengths and weakness, and gaps are identified. The review ends with a conclusion section which summarizes the findings regarding the state of the research of the specific study, the gaps identify and if applicable, explains how the author's research will address gaps identify in the review and expand the knowledge on the topic reviewed.

• Example : Predictors and Outcomes of U.S. Quality Maternity Leave: A Review and Conceptual Framework:  10.1177/08948453211037398  

Systematic review : "The authors of a systematic review use a specific procedure to search the research literature, select the studies to include in their review, and critically evaluate the studies they find." (p. 139). Nelson, L. K. (2013). Research in Communication Sciences and Disorders . Plural Publishing.

• Example : The effect of leave policies on increasing fertility: a systematic review:  10.1057/s41599-022-01270-w

Meta-analysis : "Meta-analysis is a method of reviewing research findings in a quantitative fashion by transforming the data from individual studies into what is called an effect size and then pooling and analyzing this information. The basic goal in meta-analysis is to explain why different outcomes have occurred in different studies." (p. 197). Roberts, M. C., & Ilardi, S. S. (2003). Handbook of Research Methods in Clinical Psychology . Blackwell Publishing.

• Example : Employment Instability and Fertility in Europe: A Meta-Analysis:  10.1215/00703370-9164737

Meta-synthesis : "Qualitative meta-synthesis is a type of qualitative study that uses as data the findings from other qualitative studies linked by the same or related topic." (p.312). Zimmer, L. (2006). Qualitative meta-synthesis: A question of dialoguing with texts .  Journal of Advanced Nursing , 53 (3), 311-318.

• Example : Women’s perspectives on career successes and barriers: A qualitative meta-synthesis:  10.1177/05390184221113735

Literature Reviews in the Health Sciences

• UConn Health subject guide on systematic reviews Explanation of the different review types used in health sciences literature as well as tools to help you find the right review type
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• Keeping up with Research!
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What is a Literature Review?

So, what is a literature review .

"A literature review is an account of what has been published on a topic by accredited scholars and researchers. In writing the literature review, your purpose is to convey to your reader what knowledge and ideas have been established on a topic, and what their strengths and weaknesses are. As a piece of writing, the literature review must be defined by a guiding concept (e.g., your research objective, the problem or issue you are discussing, or your argumentative thesis). It is not just a descriptive list of the material available or a set of summaries." - Quote from Taylor, D. (n.d)."The Literature Review: A Few Tips on Conducting it".

• Citation: "The Literature Review: A Few Tips on Conducting it"

What kinds of literature reviews are written?

Each field has a particular way to do reviews for academic research literature. In the social sciences and humanities the most common are:

• Narrative Reviews: The purpose of this type of review is to describe the current state of the research on a specific research topic and to offer a critical analysis of the literature reviewed. Studies are grouped by research/theoretical categories, and themes and trends, strengths and weaknesses, and gaps are identified. The review ends with a conclusion section that summarizes the findings regarding the state of the research of the specific study, the gaps identify and if applicable, explains how the author's research will address gaps identify in the review and expand the knowledge on the topic reviewed.
• Book review essays/ Historiographical review essays : A type of literature review typical in History and related fields, e.g., Latin American studies. For example, the Latin American Research Review explains that the purpose of this type of review is to “(1) to familiarize readers with the subject, approach, arguments, and conclusions found in a group of books whose common focus is a historical period; a country or region within Latin America; or a practice, development, or issue of interest to specialists and others; (2) to locate these books within current scholarship, critical methodologies, and approaches; and (3) to probe the relation of these new books to previous work on the subject, especially canonical texts. Unlike individual book reviews, the cluster reviews found in LARR seek to address the state of the field or discipline and not solely the works at issue.” - LARR

What are the Goals of Creating a Literature Review?

• To develop a theory or evaluate an existing theory
• To summarize the historical or existing state of a research topic
• Identify a problem in a field of research 
• Baumeister, R.F. & Leary, M.R. (1997). "Writing narrative literature reviews," Review of General Psychology , 1(3), 311-320.

When do you need to write a Literature Review?

• When writing a prospectus or a thesis/dissertation
• When writing a research paper
• When writing a grant proposal

In all these cases you need to dedicate a chapter in these works to showcase what has been written about your research topic and to point out how your own research will shed new light into a body of scholarship.

Where I can find examples of Literature Reviews?

Note:  In the humanities, even if they don't use the term "literature review", they may have a dedicated  chapter that reviewed the "critical bibliography" or they incorporated that review in the introduction or first chapter of the dissertation, book, or article.

• UCSB electronic theses and dissertations In partnership with the Graduate Division, the UC Santa Barbara Library is making available theses and dissertations produced by UCSB students. Currently included in ADRL are theses and dissertations that were originally filed electronically, starting in 2011. In future phases of ADRL, all theses and dissertations created by UCSB students may be digitized and made available.

Where to Find Standalone Literature Reviews

Literature reviews are also written as standalone articles as a way to survey a particular research topic in-depth. This type of literature review looks at a topic from a historical perspective to see how the understanding of the topic has changed over time. 

• Find e-Journals for Standalone Literature Reviews The best way to get familiar with and to learn how to write literature reviews is by reading them. You can use our Journal Search option to find journals that specialize in publishing literature reviews from major disciplines like anthropology, sociology, etc. Usually these titles are called, "Annual Review of [discipline name] OR [Discipline name] Review. This option works best if you know the title of the publication you are looking for. Below are some examples of these journals! more... less... Journal Search can be found by hovering over the link for Research on the library website.

Social Sciences

• Annual Review of Anthropology
• Annual Review of Political Science
• Annual Review of Sociology
• Ethnic Studies Review

Hard science and health sciences:

• Annual Review of Biomedical Data Science
• Annual Review of Materials Science
• Systematic Review From journal site: "The journal Systematic Reviews encompasses all aspects of the design, conduct, and reporting of systematic reviews" in the health sciences.
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Literature Reviews

• What is a literature review?
• Steps in the Literature Review Process
• Define your research question
• Determine inclusion and exclusion criteria
• Choose databases and search
• Review Results
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What is a Literature Review?

A literature or narrative review is a comprehensive review and analysis of the published literature on a specific topic or research question. The literature that is reviewed contains: books, articles, academic articles, conference proceedings, association papers, and dissertations. It contains the most pertinent studies and points to important past and current research and practices. It provides background and context, and shows how your research will contribute to the field. 

A literature review should: 

• Provide a comprehensive and updated review of the literature;
• Explain why this review has taken place;
• Articulate a position or hypothesis;
• Acknowledge and account for conflicting and corroborating points of view

From  S age Research Methods

Purpose of a Literature Review

A literature review can be written as an introduction to a study to:

• Demonstrate how a study fills a gap in research
• Compare a study with other research that's been done

Or it can be a separate work (a research article on its own) which:

• Organizes or describes a topic
• Describes variables within a particular issue/problem

Limitations of a Literature Review

Some of the limitations of a literature review are:

• It's a snapshot in time. Unlike other reviews, this one has beginning, a middle and an end. There may be future developments that could make your work less relevant.
• It may be too focused. Some niche studies may miss the bigger picture.
• It can be difficult to be comprehensive. There is no way to make sure all the literature on a topic was considered.
• It is easy to be biased if you stick to top tier journals. There may be other places where people are publishing exemplary research. Look to open access publications and conferences to reflect a more inclusive collection. Also, make sure to include opposing views (and not just supporting evidence).

Source: Grant, Maria J., and Andrew Booth. “A Typology of Reviews: An Analysis of 14 Review Types and Associated Methodologies.” Health Information & Libraries Journal, vol. 26, no. 2, June 2009, pp. 91–108. Wiley Online Library, doi:10.1111/j.1471-1842.2009.00848.x.

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For help in other subject areas, please see the guide to library specialists by subject .

Periodically, UT Libraries runs a workshop covering the basics and library support for literature reviews. While we try to offer these once per academic year, we find providing the recording to be helpful to community members who have missed the session. Following is the most recent recording of the workshop, Conducting a Literature Review. To view the recording, a UT login is required.

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Literature reviews, what is a literature review, learning more about how to do a literature review.

• Planning the Review
• The Research Question
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• Writing the Review

A literature review is a review and synthesis of existing research on a topic or research question. A literature review is meant to analyze the scholarly literature, make connections across writings and identify strengths, weaknesses, trends, and missing conversations. A literature review should address different aspects of a topic as it relates to your research question. A literature review goes beyond a description or summary of the literature you have read. 

• Sage Research Methods Core Collection This link opens in a new window SAGE Research Methods supports research at all levels by providing material to guide users through every step of the research process. SAGE Research Methods is the ultimate methods library with more than 1000 books, reference works, journal articles, and instructional videos by world-leading academics from across the social sciences, including the largest collection of qualitative methods books available online from any scholarly publisher. – Publisher

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Literature Review: Purpose of a Literature Review

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The purpose of a literature review is to:

• Provide a foundation of knowledge on a topic
• Identify areas of prior scholarship to prevent duplication and give credit to other researchers
• Identify inconstancies: gaps in research, conflicts in previous studies, open questions left from other research
• Identify the need for additional research (justifying your research)
• Identify the relationship of works in the context of their contribution to the topic and other works
• Place your own research within the context of existing literature, making a case for why further study is needed.

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VIDEO: What is the role of a literature review in research? What's it mean to "review" the literature? Get the big picture of what to expect as part of the process. This video is published under a Creative Commons 3.0 BY-NC-SA US license. License, credits, and contact information can be found here: https://www.lib.ncsu.edu/tutorials/litreview/

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Conducting a Literature Review

Benefits of conducting a literature review.

• Steps in Conducting a Literature Review
• Summary of the Process
• Additional Resources
• Literature Review Tutorial by American University Library
• The Literature Review: A Few Tips On Conducting It by University of Toronto
• Write a Literature Review by UC Santa Cruz University Library

While there might be many reasons for conducting a literature review, following are four key outcomes of doing the review.

Assessment of the current state of research on a topic . This is probably the most obvious value of the literature review. Once a researcher has determined an area to work with for a research project, a search of relevant information sources will help determine what is already known about the topic and how extensively the topic has already been researched.

Identification of the experts on a particular topic . One of the additional benefits derived from doing the literature review is that it will quickly reveal which researchers have written the most on a particular topic and are, therefore, probably the experts on the topic. Someone who has written twenty articles on a topic or on related topics is more than likely more knowledgeable than someone who has written a single article. This same writer will likely turn up as a reference in most of the other articles written on the same topic. From the number of articles written by the author and the number of times the writer has been cited by other authors, a researcher will be able to assume that the particular author is an expert in the area and, thus, a key resource for consultation in the current research to be undertaken.

Identification of key questions about a topic that need further research . In many cases a researcher may discover new angles that need further exploration by reviewing what has already been written on a topic. For example, research may suggest that listening to music while studying might lead to better retention of ideas, but the research might not have assessed whether a particular style of music is more beneficial than another. A researcher who is interested in pursuing this topic would then do well to follow up existing studies with a new study, based on previous research, that tries to identify which styles of music are most beneficial to retention.

Determination of methodologies used in past studies of the same or similar topics.  It is often useful to review the types of studies that previous researchers have launched as a means of determining what approaches might be of most benefit in further developing a topic. By the same token, a review of previously conducted studies might lend itself to researchers determining a new angle for approaching research.

Upon completion of the literature review, a researcher should have a solid foundation of knowledge in the area and a good feel for the direction any new research should take. Should any additional questions arise during the course of the research, the researcher will know which experts to consult in order to quickly clear up those questions.

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Literature Review in Research Writing

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• 423.7K views

Table of Contents

Research on research? If you find this idea rather peculiar, know that nowadays, with the huge amount of information produced daily all around the world, it is becoming more and more difficult to keep up to date with all of it. In addition to the sheer amount of research, there is also its origin. We are witnessing the economic and intellectual emergence of countries like China, Brazil, Turkey, and United Arab Emirates, for example, that are producing scholarly literature in their own languages. So, apart from the effort of gathering information, there must also be translators prepared to unify all of it in a single language to be the object of the literature survey. At Elsevier, our team of translators is ready to support researchers by delivering high-quality scientific translations , in several languages, to serve their research – no matter the topic.

What is a literature review?

A literature review is a study – or, more accurately, a survey – involving scholarly material, with the aim to discuss published information about a specific topic or research question. Therefore, to write a literature review, it is compulsory that you are a real expert in the object of study. The results and findings will be published and made available to the public, namely scientists working in the same area of research.

How to Write a Literature Review

First of all, don’t forget that writing a literature review is a great responsibility. It’s a document that is expected to be highly reliable, especially concerning its sources and findings. You have to feel intellectually comfortable in the area of study and highly proficient in the target language; misconceptions and errors do not have a place in a document as important as a literature review. In fact, you might want to consider text editing services, like those offered at Elsevier, to make sure your literature is following the highest standards of text quality. You want to make sure your literature review is memorable by its novelty and quality rather than language errors.

Writing a literature review requires expertise but also organization. We cannot teach you about your topic of research, but we can provide a few steps to guide you through conducting a literature review:

• Choose your topic or research question: It should not be too comprehensive or too limited. You have to complete your task within a feasible time frame.
• Set the scope: Define boundaries concerning the number of sources, time frame to be covered, geographical area, etc.
• Decide which databases you will use for your searches: In order to search the best viable sources for your literature review, use highly regarded, comprehensive databases to get a big picture of the literature related to your topic.
• Search, search, and search: Now you’ll start to investigate the research on your topic. It’s critical that you keep track of all the sources. Start by looking at research abstracts in detail to see if their respective studies relate to or are useful for your own work. Next, search for bibliographies and references that can help you broaden your list of resources. Choose the most relevant literature and remember to keep notes of their bibliographic references to be used later on.
• Review all the literature, appraising carefully it’s content: After reading the study’s abstract, pay attention to the rest of the content of the articles you deem the “most relevant.” Identify methodologies, the most important questions they address, if they are well-designed and executed, and if they are cited enough, etc.

If it’s the first time you’ve published a literature review, note that it is important to follow a special structure. Just like in a thesis, for example, it is expected that you have an introduction – giving the general idea of the central topic and organizational pattern – a body – which contains the actual discussion of the sources – and finally the conclusion or recommendations – where you bring forward whatever you have drawn from the reviewed literature. The conclusion may even suggest there are no agreeable findings and that the discussion should be continued.

Why are literature reviews important?

Literature reviews constantly feed new research, that constantly feeds literature reviews…and we could go on and on. The fact is, one acts like a force over the other and this is what makes science, as a global discipline, constantly develop and evolve. As a scientist, writing a literature review can be very beneficial to your career, and set you apart from the expert elite in your field of interest. But it also can be an overwhelming task, so don’t hesitate in contacting Elsevier for text editing services, either for profound edition or just a last revision. We guarantee the very highest standards. You can also save time by letting us suggest and make the necessary amendments to your manuscript, so that it fits the structural pattern of a literature review. Who knows how many worldwide researchers you will impact with your next perfectly written literature review.

Know more: How to Find a Gap in Research .

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• Steps in Conducting a Literature Review

What is a literature review?

A literature review is an integrated analysis -- not just a summary-- of scholarly writings and other relevant evidence related directly to your research question.  That is, it represents a synthesis of the evidence that provides background information on your topic and shows a association between the evidence and your research question.

A literature review may be a stand alone work or the introduction to a larger research paper, depending on the assignment.  Rely heavily on the guidelines your instructor has given you.

Why is it important?

A literature review is important because it:

• Explains the background of research on a topic.
• Demonstrates why a topic is significant to a subject area.
• Discovers relationships between research studies/ideas.
• Identifies major themes, concepts, and researchers on a topic.
• Identifies critical gaps and points of disagreement.
• Discusses further research questions that logically come out of the previous studies.

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1. Choose a topic. Define your research question.

Your literature review should be guided by your central research question.  The literature represents background and research developments related to a specific research question, interpreted and analyzed by you in a synthesized way.

• Make sure your research question is not too broad or too narrow.  Is it manageable?
• Begin writing down terms that are related to your question. These will be useful for searches later.
• If you have the opportunity, discuss your topic with your professor and your class mates.

2. Decide on the scope of your review

How many studies do you need to look at? How comprehensive should it be? How many years should it cover? 

• This may depend on your assignment.  How many sources does the assignment require?

3. Select the databases you will use to conduct your searches.

Make a list of the databases you will search. 

Where to find databases:

• use the tabs on this guide
• Find other databases in the Nursing Information Resources web page
• More on the Medical Library web page
• ... and more on the Yale University Library web page

4. Conduct your searches to find the evidence. Keep track of your searches.

• Use the key words in your question, as well as synonyms for those words, as terms in your search. Use the database tutorials for help.
• Save the searches in the databases. This saves time when you want to redo, or modify, the searches. It is also helpful to use as a guide is the searches are not finding any useful results.
• Review the abstracts of research studies carefully. This will save you time.
• Use the bibliographies and references of research studies you find to locate others.
• Check with your professor, or a subject expert in the field, if you are missing any key works in the field.
• Ask your librarian for help at any time.
• Use a citation manager, such as EndNote as the repository for your citations. See the EndNote tutorials for help.

Review the literature

Some questions to help you analyze the research:

• What was the research question of the study you are reviewing? What were the authors trying to discover?
• Was the research funded by a source that could influence the findings?
• What were the research methodologies? Analyze its literature review, the samples and variables used, the results, and the conclusions.
• Does the research seem to be complete? Could it have been conducted more soundly? What further questions does it raise?
• If there are conflicting studies, why do you think that is?
• How are the authors viewed in the field? Has this study been cited? If so, how has it been analyzed?

Tips: 

• Review the abstracts carefully.  
• Keep careful notes so that you may track your thought processes during the research process.
• Create a matrix of the studies for easy analysis, and synthesis, across all of the studies.
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5 Reasons the Literature Review Is Crucial to Your Paper

3-minute read

• 8th November 2016

People often treat writing the literature review in an academic paper as a formality. Usually, this means simply listing various studies vaguely related to their work and leaving it at that.

But this overlooks how important the literature review is to a well-written experimental report or research paper. As such, we thought we’d take a moment to go over what a literature review should do and why you should give it the attention it deserves.

What Is a Literature Review?

Common in the social and physical sciences, but also sometimes required in the humanities, a literature review is a summary of past research in your subject area.

Sometimes this is a standalone investigation of how an idea or field of inquiry has developed over time. However, more usually it’s the part of an academic paper, thesis or dissertation that sets out the background against which a study takes place.

There are several reasons why we do this.

Reason #1: To Demonstrate Understanding

In a college paper, you can use a literature review to demonstrate your understanding of the subject matter. This means identifying, summarizing and critically assessing past research that is relevant to your own work.

Reason #2: To Justify Your Research

The literature review also plays a big role in justifying your study and setting your research question . This is because examining past research allows you to identify gaps in the literature, which you can then attempt to fill or address with your own work.

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Reason #3: Setting a Theoretical Framework

It can help to think of the literature review as the foundations for your study, since the rest of your work will build upon the ideas and existing research you discuss therein.

A crucial part of this is formulating a theoretical framework , which comprises the concepts and theories that your work is based upon and against which its success will be judged.

Reason #4: Developing a Methodology

Conducting a literature review before beginning research also lets you see how similar studies have been conducted in the past. By examining the strengths and weaknesses of existing research, you can thus make sure you adopt the most appropriate methods, data sources and analytical techniques for your own work.

Reason #5: To Support Your Own Findings

The significance of any results you achieve will depend to some extent on how they compare to those reported in the existing literature. When you come to write up your findings, your literature review will therefore provide a crucial point of reference.

If your results replicate past research, for instance, you can say that your work supports existing theories. If your results are different, though, you’ll need to discuss why and whether the difference is important.

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• Published: 06 May 2024

“We know what we should be eating, but we don’t always do that.” How and why people eat the way they do: a qualitative study with rural australians

• Nina Van Dyke   ORCID: orcid.org/0000-0002-8872-3451 1 ,
• Michael Murphy   ORCID: orcid.org/0000-0003-0434-4567 2 &
• Eric J. Drinkwater   ORCID: orcid.org/0000-0002-9594-9360 3  

BMC Public Health volume  24 , Article number:  1240 ( 2024 ) Cite this article

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There is evidence that most people are aware of the importance of healthy eating and have a broad understanding regarding types of food that enhance or detract from health. However, greater health literacy does not always result in healthier eating. Andreasen’s Social Marketing Model and Community-Based Social Marketing both posit that, in order to change health behaviours, it is crucial to understand reasons for current behaviours and perceived barriers and benefits to improved behaviours. Limited research has been conducted, however, that explores these issues with general populations. This study aimed to help address this gap in the evidence using a qualitative methodology.

Three group discussions were conducted with a total of 23 participants: (1) young women aged 18–24 with no children; (2) women aged 35–45 with primary school aged children; and (3) men aged 35–50 living with a partner and with pre- or primary school aged children. The discussions took place in a regional centre of Victoria, Australia. Transcriptions were thematically analysed using an inductive descriptive approach and with reference to a recent integrated framework of food choice that identified five key interrelated determinants: food– internal factors; food– external factors; personal-state factors; cognitive factors; and sociocultural factors.

We found that food choice was complex, with all five determinants evident from the discussions. However, the “Social environment” sub-category of “Food-external factors”, which included family, work, and social structures, and expectations (or perceived expectations) of family members, colleagues, friends, and others, was particularly prominent. Knowledge that one should practice healthy eating, which falls under the “Cognitive factor” category, while seen as an aspiration by most participants, was often viewed as unrealistic, trumped by the need and/or desire for convenience, a combination of Food-external factor: Social environment and Personal-state factor: Psychological components.

Conclusions

We found that decisions regarding what, when, and how much to eat are seen as heavily influenced by factors outside the control of the individual. It appears, therefore, that a key to improving people’s eating behaviours is to make it easy to eat more healthfully, or at least not much harder than eating poorly.

Peer Review reports

A plethora of recommendations exist regarding how people should eat to maintain better health [e.g., 1 , 2 , 3 ]. Moreover, there is evidence that most people have a reasonable awareness of connections between healthier foods and better health, and a broad understanding regarding types of food that enhance or detract from health [ 4 , 5 , 6 ]. However, greater health literacy does not always result in healthier eating [ 7 – 8 ].

Evidence suggests that public health and health-promotion interventions with a theoretical basis are more effective than those lacking such a foundation [ 9 , 10 , 11 ]. Andreasen’s Social Marketing Model [ 12 ] posits that a primary focus for behaviour change is on learning what people want and need rather than trying to persuade them to adopt particular behaviours or goals. Community-based social marketing sets out six steps necessary for enacting societal behavioural change; step two is to understand perceived barriers and benefits to develop interventions [ 13 ].

Limited research has been conducted, however, that explores how people in the general population eat and their perceptions regarding why they eat the way they do [ 14 – 15 ]. Although several recent papers have examined barriers to and enablers of healthier eating [e.g., 16 ], relatively few are from the perspective of the consumers themselves [e.g., 17 – 18 ] or are narrowly focused on particular types of healthy consumption [e.g., 19 ].

Healthy eating: knowing vs. doing

Food-based dietary guidelines are available for more than 90 countries globally. Although there is some variation across guidelines regarding particular foods, there is broad agreement to consume a variety of foods; consume some foods in higher proportion than others; consume fruits, vegetables, and legumes; and to limit sugar, fat, and salt [ 20 , 21 , 22 ].

There is mixed evidence regarding whether most people broadly understand what constitutes a healthy diet and believe they should try to eat healthily. A systematic review of the psychological literature on healthy diet, for example, found that the public has a “remarkably accurate” understanding of healthy nutrition and that this understanding reflects key dietary guidelines [ 23 ]. Focus groups with participants segmented by age and gender found that most participants were aware of the type of foods that contributed to a healthy diet and the importance of achieving a healthy balance within a diet [ 24 ]. Other studies, however, have found evidence of confusion and misperceptions amongst the general public. A cross-sectional survey of 1,097 adults aged 18–64 in Victoria, Australia and 135 professional dietitians, for example, found large discrepancies in which of various food items were considered healthy. Amongst women and those living in higher socio-economic areas, however, views were similar [ 25 ]. An earlier survey of Swiss consumers found that between 3% and 38% incorrectly answered procedural nutrition knowledge items. Again, this overall finding differed by sub-groups [ 26 ].

However, this knowledge does not necessarily result in healthy eating [ 27 ]. A systematic review of the relationship between nutrition knowledge and dietary intake found that the majority of studies reported significant, positive associations, but the relationship was weak ( r  < 0.5 ) and mostly involved slightly higher intake of fruits and vegetables. The authors also noted that study quality ranged widely and that most participants were female and with a tertiary education, with limited representation of individuals from lower socio-economic status background [ 28 ]. A qualitative study with adults in New Zealand reported “the impossible rightness of healthy eating”, meaning that the people in their study knew they should be eating healthfully, but simultaneously felt that this was very difficult or impossible to do [ 29 ]. A Canadian study argued that the concept of "food literacy" needed to extend beyond nutritional recommendations and cooking lessons to fostering connections between food, people, health, and the environment to bridge this gap between knowing and doing [ 30 ].

Theoretical frameworks

Andreasen’s Social Marketing Model [ 12 ] presents behaviour change as the dependent variable, influenced by four classes of independent variables: (1) the attractiveness of behavioural alternatives, (2) community pressures, (3) the cooperation of critical supporting agencies, and (4) marketing efforts. Of specific relevance to this study, Andreasen [ 12 ] posits that a primary focus for behaviour change is on learning what people want and need rather than trying to persuade them to adopt particular behaviours or goals.

Also relevant is Community-Based Social Marketing. Community-Based Social Marketing is based on six steps. Step one is to identify the target behaviour– in this case, unhealthy eating. Step two is to understand perceived barriers and benefits to develop interventions [ 13 ]. It is this second step that we focus on in this study.

• Food choice

Decisions regarding what food to eat, when, and in what quantity are “frequent, multifaceted, situational, dynamic, and complex” [ 31 ]. A recent review and analysis of existing models of food choice integrates key elements into a single framework (Fig.  1 ) [ 32 ]. In this framework, key determinants of general food choice were identified and categorised, including Food– internal factor (sensory and perceptual features), Food– external factor (information, social environment, physical environment), Personal– state factor (biological features and physiological needs, psychological components, habits and experiences), Cognitive factor (knowledge and skills, attitude, liking and preference, anticipated consequences, and personal identity), and Sociocultural factors (culture, economic variables, political elements). According to this framework, any attempt to shift choice must consider these interrelated factors.

Conceptual model of food choice. The lines in the figure indicate the interactions between different factors [ 32 ]

Literature on perceived barriers and enablers of healthy eating

Most of the recent evidence on perceived barriers to and enablers of healthy eating focuses on particular sub-populations, such as young people with obesity, shift workers, or people with Type 2 diabetes [ 33 , 34 , 35 , 36 , 37 ], and/or a particular type of diet, such as the Mediterranean Diet [ 38 – 39 ].

Studies examining more general populations tend to focus on younger people. A scoping review of barriers to and enablers of healthy eating for young adults in Western countries, for example, identified the following barriers: male apathy towards diet; unhealthy diet of friends and family; expected consumption of unhealthy foods in certain situations; relative low cost of unhealthy foods; lack of time to plan, shop, prepare, and cook healthy foods; lack of facilities to prepare, cook and store healthy foods; widespread presence of unhealthy foods; lack of knowledge and skills to plan, shop, prepare, and cook healthy foods; and lack of motivation to eat healthily (including risk-taking behaviour). Key enablers included: female interest in a healthy diet; healthy diet of friends and family; support/encouragement of friends and family to eat healthily; desire for improved health; desire for weight management; desire for improved self-esteem; desire for attractiveness to potential partners and others; possessing autonomous motivation to eat healthily and existence and use of self-regulatory skills [ 40 ]. A qualitative study of college students aged 18–24 at one university in Hawaii, U.S., of perceived barriers to and enablers of healthy eating found the largest barriers to be nutrition knowledge deficit, peer pressure, unsupportive institutional environment, and cost. The largest enablers were nutrition knowledge, parental influence, an institutional environment with consistent healthy offerings, and social media. It was noted that several of these factors served as barriers for some participants and enablers for others, such as nutrition knowledge, parental influence, and institutional environment [ 41 ]. Another qualitative study with college students at a U.S. college found that common barriers to healthy eating were time constraints, unhealthy snacking, convenience high-calorie food, stress, high prices of healthy food, and easy access to junk food. Conversely, enablers to healthy behaviour were improved food knowledge and education, meal planning, involvement in food preparation, and being physically active. Parental food behaviour and friends’ social pressure were considered to have both positive and negative influences on individual eating habits [ 42 ]. Much of this food choice literature identified the importance of social factors and social norms [ 43 – 44 ].

Limited research exists that explores why people in a general population eat the way they do and what, from their perspective, are the barriers and enablers to doing so. From a public health perspective, such evidence is crucial for developing population-level interventions or advocating for policy change. This study aimed to help address this gap in the evidence by using a qualitative methodology to explore the eating patterns and process by which eating decisions were made amongst a general population of non-metropolitan adults in Australia. A non-metropolitan sample was chosen for several reasons. First, Australians living in rural and remote areas experience higher rates of diet-related disease when compared to urban residents, including cardiovascular disease, type 2 diabetes, high blood pressure, chronic kidney disease, and obesity [ 45 – 46 ]. Second, access to healthy food is more challenging in rural and remote Australia due to further distances from urban centres and higher prices [ 47 – 48 ]. Third, Australians living in rural and remote areas experience greater socio-economic disadvantage than those living in urban areas [ 49 ], which makes healthy food relatively more unaffordable. Finally, most qualitative research in Australia tends to be conducted with people in metropolitan areas, with less known about people living in non-metropolitan locations.

This study is part of a larger, mixed-methods study examining eating behaviours. Data collection took place in 2010. A detailed discussion of the methodology employed for the qualitative component has been published previously in a paper examining what people think of intuitive eating [ 50 ]. Other papers published from this study include a quantitative investigation of the associations between intuitive eating and indicators of physical and mental health [ 51 ], a review of the literature on the relationship between intuitive eating and health indicators [ 52 ], and an experimental study testing whether the accuracy of self-reported height and weight in surveys could be improved by changes to the question wording [ 53 ].

Study design and participants

Three group discussions were conducted with a total of 23 participants: (1) young women aged 18–24 with no children; (2) women aged 35–45 with primary school aged children; and (3) men aged 35–50 living with a partner and with pre- or primary school aged children. These three group demographics were selected to target significant age and life-stages in which shifts in eating behaviours may occur [ 54 ]. The groups were conducted in Bendigo, a regional centre of Victoria, Australia, with participants recruited from Bendigo city and outlying areas.

Recruitment was conducted by a professional recruitment agency. Participants were paid AUD70. Participants were chosen such that at least two in each group had previously been on a weight loss diet and at least two had never been on a weight loss diet; at least three in each group were “over my most healthy weight”.

All focus groups were conducted in a hotel conference room facility in Bendigo and were recorded for the purposes of analysis. The groups began with a general discussion about food choices and approaches to eating, including discussion of the factors that influenced food choices. Topics included influences on eating decisions– what, when, how much; eating patterns– when, why, what; feelings around eating; enjoyment of food/eating; and the role that healthy eating played in their decisions around food.

Data analysis

With the permission of participants, all research sessions were recorded and transcribed. Transcriptions were thematically analysed using an inductive descriptive approach [ 55 – 56 ].

This study received ethics approval from the Charles Sturt University Human Research Ethics Committee (2010/144).

The conversations about what people ate in terms of choice of food and the amount consumed were contextualised within an appreciation of participants’ living and working situations. While it was beyond the scope of this study to provide a documentation of the diets of participants, some information was provided about specific food preferences. However, the main interest was on the factors that affected their food choices.

Across the groups, there was a general and consistent belief that what one ate was affected by a range of factors, and that as a consequence, none of these participants felt that they were entirely in control of their own diets. While some of these factors were personal, others were felt to be determined by family, work and other social structures.

Participants were clear that the term, “diet”, while most obviously associated with weight loss, can be used to refer to general eating patterns or specific kinds of approaches to eating. Hence, the term, “diet” will be used in this paper to refer to the usual or regular food and patterns of eating. When the topic is related to a specific kind of diet that is being pursued for a particular purpose, this is referred to as the specific kind of diet, and when the specific purpose is related to weight loss, we have referred to this as a “weight loss diet”.

As an inductive approach was used in the analysis, we did not endeavour to match identified themes to the factors presented in the Chen and Antonelli [ 32 ] model. Instead, we discuss how our findings align with this model in the Discussion section. Seven main themes were identified, most with several sub-themes. Main themes included taste and health considerations, family factors, work and workplaces, social factors, planning and preparation, meal patterns, and perceptions of own eating.

Taste and health considerations

Across the groups, participants commonly talked about foods that they liked or did not like and suggested that food tastes and preferences were a primary determinant of their diets. In each group, there was some discussion of eating according to what one feels like at the time. However, it was apparent that this approach tended to mean that people’s eating varied widely in terms of eating healthily or otherwise. While they might experience times when they simply felt like foods that they considered to be healthy, it was apparent that these cravings were not the norm, and that some were almost surprised at the idea of desiring salads or vegetables.

Some days you feel like eating cold meat and salad for tea, or some days you’ll just eat a whole loaf of garlic bread. (Women, 18–24)

Some noted that food preferences seem to go in phases.

I’ve just gone off those. (Women, 18–24)

Participants also commonly talked about health as a factor that would influence their diet, but that they tended to wax and wane in terms of their degree of commitment to maintaining a healthy diet. Even those who reported being quite focussed on health as a motivator felt that it was quite hard to consistently maintain a healthy diet, and that there would be times when they did not feel like making the effort. Underlying these thoughts was a belief that eating healthily was hard work, and certainly harder than eating for convenience.

Mine varies between wanting to be super detox, organic; as natural as possible to, um, I’m totally energy depleted, give me some carbs. So I will, like, live a contradictory diet by having regular meals that are semi-regular, so really, really good, and then just crash and you know you get into work and you come home and you haven’t had time for a proper lunch or you didn’t, you know, take the time to prepare it and they come home after school and… well, it annoys me because I want to be consistent basically, and I want to be role model for my kids as well. (Women, 35–45) Oh, I have had…I’ll have the healthy breakfast for you know a week or two and then I think, “Oh, I’m sick of that, I’ll just go for toast. You get a bit tired of being strong and healthy. (Women, 35–45)

Some mentioned specific health concerns, including particular diseases or even injuries that affected their capacity to prepare meals.

Oh, our eating habits are very erratic at the moment because I’m not cooking because of an injury, and my husband has to cook so if he’s late home from work, usually the kids have made something for themselves, like a chicken burger or a slice of bread, or a can of spaghetti or something like that. (Women, 35–45)

Within these discussions, it was apparent that participants’ knowledge about nutrition and health varied considerably, and that their level of knowledge did tend to affect food choices. Some participants talked about the idea of balance, and of making choices to ensure a balance of food over the day or week. For some, balance was also about compensating for other aspects of life and health, such as smoking or drinking or physical activity. Some of the men, in particular, talked about doing more activity to compensate for having eaten too much or consumed too much alcohol.

For me, like if I’ve eaten too much, one night I know I’ve got this exercise the next day, so I have to go to the gym or get up in the morning and do some physical activity. (Men, 35–50) Yeah to me I was the same, I used to smoke and I still drink every now and then you know, I’ll try to keep fit and I know if I eat too much, I’ve got to try and do some exercises to balance it out. (Men, 35–50) I do heaps of exercise because I love eating… I run so that I can eat. (Men, 35–50)

Family factors

Time and convenience.

Throughout the discussions, it was apparent that food choices were substantially affected by factors associated with time and convenience. Participants talked about having busy schedules (e.g., family, work, school, sports), and that these activities had an impact on both the choice and timing of food.

Convenience, especially in terms of the time available for food preparation, was a major factor in food choices. In this context, participants referred to take-away foods, frozen or pre-prepared foods, and meals that were quick to prepare as offering considerable advantage in terms of fitting in with their lifestyles. As noted later, these factors interacted with the time of the week, so that weekdays tended to be more hectic with less time available for food preparation, while weekends commonly afforded greater choice.

Household members

Across the groups, participants reported that the choice of food that they consumed at any particular time was not always entirely up to them. Rather, what they ate at any particular meal was commonly affected by where they were eating, who else they were eating with, and other people’s food preferences. This was especially an issue for people who lived with others, most obviously those who were parents and were catering for children and spouses, but also for those who lived in shared households. In this context, the household makeup was a primary determinant of food choices and approaches to eating. This included the mix of males and females in the household as well as the age of children.

That’s me: quick and easy. And I love the chance when I can actually get a recipe, get all the, um, ingredients and make it properly, but that doesn’t happen very often. It’s just usually what’s there and what’s quick. And what everyone will eat. (Women, 35–45) Oh, yes, that’s a big one for me of having four children and a couple of fussy buggers. You do tend to stick to the things that they will eat… spaghetti bol[ognese], four times a week. (Women, 35–45) You have to cater for different tastes in the household. (Women, 35–45) There’s nothing more heartbreaking… when you do go to a lot of effort and they won’t even try it. (Women, 35–45)

In this context, catering for teenage boys was raised as a specific issue. Parents of teenage boys reported that they were often primarily driven by a need to provide filling food, and this tended to mean a reliance on carbohydrate-based meals, such as rice or pasta. Some amongst the group of men also talked about the main motivator for food choices being about filling themselves up. They would choose foods that provided bulk so that they could feel full. Certainly amongst the men, and in the context of parents talking about their sons, there was a substantial focus on the need for food to be bulky and filling.

I usually choose my food for size, value for money and something that the boys will eat. Bigger is better. (Men, 35–50) Size, you know, steak, parma, my son will eat, you know, most things, money comes into it again, but bigger is better. (Men, 35–50) I’d rather go big than fancy. (Men, 35–50) For me I’ve always just, I eat until I’m completely full, if you are breathing and food isn’t coming into your mouth, because you’ve so full, then you are not full enough, so keep eating, that’s the kind of, my whole family is the same, none of them are overweight or fat. (Men, 35–50) Every second meal is probably pasta or rice [to fill up the kids]. (Women, 35–45)

Throughout these discussions, it was apparent that some of the women who were involved in preparing family meals tended to ignore their own preferences for the sake of catering for partners and children. They believed that it was not worth preparing a different meal for themselves, and so tended to eat whatever they were preparing for others. Several of the women commented that this meant that they did not eat as healthily as they would like to. When prompted, those in the group of mothers commented that they only really enjoyed some of their meals.

Whatever’s in the fridge or cupboard. If there’s salad I’ll have salad, but if we’ve got leftovers I’ll have that… whatever I can grab. (Women, 35–45) [I enjoy] half to three-quarters [of my meals] and the rest are a bit of a chore. (Women, 35–45) We’re just eating because you got to eat to keep going, but tea time is more of an enjoyable meal. And the snacks in between are usually enjoyable. (Women, 35–45) Well, it made me realise that probably maybe it’s more complicated in bringing up children, that I really ignored my own health for quite a long time. (Women, 35–45)

Interestingly, however, some of these same participants commented that when they did have the opportunity to choose meals that were not dependent on the preferences of others, such as when they were at home on their own during the day, they commonly chose foods that were convenient, and reported that they could not be bothered preparing for themselves. They reported that they would find something that they considered simple and easy to make (e.g., leftovers; toast; cheese and biscuits).

Yeah, there are days like that, I just grab one of those [Up & Go drinks]. Um, because I’m part-time sometimes I’ll be home at lunch time and I’ll say to myself in the morning, “Oh, I’ll eat when I go home. I’ll have a good meal when I go home", but what happens is that I stay on at school longer and I’ll come home at 2:00, 2:30/3:00 and then it’s like, “I’ll wait till the kids are home, we’ll just have afternoon…or I’ll come home carb crave, you know, deprived and just…just grab some, like Cruskets or Saladas or some rubbish, a bit of cheese". (Women, 35–45) I think if I didn’t have to cook for the kids I would eat differently but, then having said that, as we’ve been talking I thought you know I don’t make the effort at lunch time, I just go by routine, whatever, and…if I’m not enjoying it I’ll just eat it because it’s there rather than spend the time to make something I really like, like vegetables or a salad. A lot of basic things. (Women, 35–45)

Those who lived with children talked about the age of their children affecting both the kind of food they ate and when they ate. In particular, those with younger children tended to report that they tried to arrange meals around reasonably set timelines. They reasoned that this structure fit in best with other patterns of their children’s day-to-day activities, especially school, sports, and sleep. It was apparent that such set structures were less important for those with older children or without children.

Price and budgets

The cost of food was commonly mentioned as a determinant of food choices. This was especially the case for those with teenage boys, given the need to provide large amounts of food. Several of the family participants talked about buying food in bulk when it was cheap and commented that this would then govern their food choices for a period of time.

I buy cereal in boxes of twenty or thirty, so if Nutrigrain is on Special for $4 a box, I buy twenty or thirty… Vita Brits I went and brought, it was $2 a box or something for Vita Brits the other day, and $2 a box for Weet Bix somewhere else, so I actually had a whole car filled with two trolleys full of Vita Brits, Weet Bix, and I haven’t brought Nutrigrain in a while, we are down to about our last three boxes, we had about forty boxes in there the other day. (Men, 35–50) We’re looking at economy; we’ve all got children. You know, we’ve got to budget. (Women, 35–45)

Work and workplaces

Outside of the home, some noted that their lunch time food choices when they were at work depended on where they were, what was available, and who else they were eating with or purchasing for. Some commented that they were not always able to take lunch with them to work, and that this, combined with where they were working, determined what they could eat at lunch time. Some commented that they worked in areas with only limited choice and some reported that they would be on the road for work and what they ate depended on which town they were visiting at lunch time. In both of these situations, participants noted that it was especially difficult to make food choices that they believed were healthy, simply because the healthy options were not readily available. Some noted that at their workplaces, a group of workers would take it in turns to decide where they would go for lunch, and therefore the individual’s choice was dependent on what that one place had available that day.

Participants also commented that their workplace, type of work, and working hours determined when they could eat. Some experienced set working hours and had little flexibility to decide when they ate, with references being made to shift work, school hours, or retail businesses with defined customer service hours. Working hours were also regarded as one of the factors that determined whether breakfast was eaten and what was eaten at the time. Some participants talked about not feeling like eating as soon as they got up, preferring to wait until sometime later to have breakfast. However, some of these people also noted that the nature of their work meant that they were unable to eat at the time that they would prefer (e.g., teachers), and therefore that they would have to have something first thing in the morning so they could last through until lunch time.

Social factors

Location of eating.

Participants consistently pointed out that eating food that they had not prepared affected their choice of foods, from the perspective of both availability and desire. For example, when eating out, participants reported that they tended to have something they wouldn’t eat at home. They were more likely to have foods they considered to be treats. Some also commented that they would choose foods at these times that were restricted at home because others in the household did not like them. A specific example was food that was provided for free, which was typically at some kind of function. Free food meant different motivations for choice. Partly this was related to not being able to be as fussy as they would be if they were providing their own food or making their own choices. Partly it was related to going for the unusual, commonly more decadent, choice. In both of the above situations (eating out and free food), some participants talked about the idea of feeling like they had to eat all that they were served so as to not waste the opportunity or their money.

Most of the time if I’ve overeaten is when we go to the buffets, where it’s all you can eat sort of thing… so I try to avoid those sort of places, because I will overeat and I feel guilty and then I’ll go out for a walk before I go to bed and then I’ll punish myself the next day. (Men, 35–50)

Other factors related to location were discussed previously under the heading, ‘Work and workplaces’.

Social and physical activities

Participants talked about a range of activities that affected both choice and timing of food. A common factor was that of physical activity, and especially in the context of organised team sports. It was noted that these activities, especially if they were during the week, often overlapped with normal eating times, and therefore that meals would need to be rearranged around the activity. With respect to sports, participants also reported that they needed to consider the impact of their meal on their ability to take part in the sport, noting that they might not have sufficient energy to play a sport if they had not eaten, but that they could not eat too soon before being active. This commonly meant that meals on these evenings were either very early or very late, neither of which was regarded as ideal, but something that participants had no control over. It was also noted that physical activity could affect the type of food chosen, specifically that they would need to eat either to provide or replenish energy.

Some of those who were parents also noted that the sports activities of their children affected their own diet, in terms of both timing of meals and choice of food. Because families were reluctant to prepare more than one meal, the whole family had to fit around everyone else’s activities.

Well we have our set days where, like Wednesday nights we have to have Mackie cheese [macaroni cheese] and nuggets, because that’s what the boys want after their swimming lesson, and sometimes I have to go to the supermarket because I haven’t got any left in the fridge, so… pasta is a bit of a staple. (Men, 35–50) Wednesday is late because I’ve got touch football, so I don’t eat dinner before going to play, I don’t want to go on a full stomach, so lunch is always bigger on a Wednesday than any other day… I hate it because one of the touch footie games isn’t till seven thirty, I hate it, because normally eating at six, there is no way I can have tea beforehand, because I’m just going to run around and get sick, so you don’t get home till… eight thirty, quarter to nine, nine if they are running late, and… yeah, pretty much [McDonald’s] or homemade pizza… because you know they only take about eight minutes in the oven.(Women, 18–24) Well whether the boys are going to be home or we know they are going to be home or one of the daughters is playing sport or I’m playing sport, it varies. (Men, 35–50)

Participants talked about a range of other social activities, such as various groups and clubs, which affected when and what they ate. While these activities might not have had the same physiological impact on food preferences and choices as sports activities, they did similarly affect when meals were eaten, which in turn affected what was eaten. For example, some mentioned after work activities, which meant that they would not get a chance to eat until late, and by then the quickest and most convenient thing to do was to buy take-away food on the way home or eat pre-prepared frozen meals when they got home.

My partner plays pool on a Monday and Wednesday night, so we always have tea a lot earlier then and cook the simple things that don’t take as long, so he can have dinner before he goes rather than buying pub meals which cost more money.(Women, 18–24)

Planning and preparation

Throughout the research, it was apparent that different people had different approaches to planning and preparing meals. The approaches tended to depend on factors such as where they lived, how they shopped, and who and how many people they were shopping for. For example, some mentioned that they lived out of town and therefore that they tended to shop less frequently but buy more at a time. Some of those who reported having large families also mentioned that they would shop in bulk. Several of these participants talked about their food shopping being driven by pre-planned meals.

Yeah and as you drift through the town you stop at the supermarket and pick up the required… it’s a half hour drive in and out, so it creates that sense of planning. (Men, 35–50) For our family… my wife actually sits down each fortnight, because we get paid fortnightly, she works full time, I’m studying full time, and working part time, five kids, the budget is not extensive, so she actually sits down each fortnight and works out what we are going to eat for the fortnight, and then goes and gets all the set ingredients for those meals, and so there’s nothing above and beyond that, now and then there might be a treat thrown in or whatever, all the stuff for the school lunches and that sort of thing. So it’s basically dependent, the amount we eat is dependent on that. She works out ok we need so much to make a meal for seven people. (Men, 35–50)

Participants’ approach to planning was also driven by factors such as their work schedules. They reported that these factors meant that they had different amounts of time available on different days of the week, and therefore that the planning and food preparation process varied according to what was possible on each day.

Oh, well, my aspiration is that I eat more healthily and more natural foods but that’s quite often sabotaged by my planning. My husband probably does want to do that as well but, um, I find it’s often, “Oh, my goodness, I’ve got half an hour to make something and there’s nothing for them, there’s nothing in the fridge, so what are we going to have. So, occasionally it’s fish and chips instead or, um, yeah, just quickly putting something together which isn’t really what I’d want to do but if I’ve done more planning in advance then…(Women, 35–45)

It was also apparent that some participants simply preferred to have a set structure to their diet, and this meant set meals and set shopping patterns.

I guess going back to the getting groceries, I tend to map my weeks out from the Sunday, buy everything for the weekend and that’s it, but I stick to the same recipe every day, so usually lunch is a wrap with ham and a certain amount of grams of tomato and cucumber… it’s just easier to stick to.(Women, 18–24) I pretty much eat at the same time every day…. 9.30 breakfast, twelve lunch, six o’clock dinner. (Women, 18–24)

By contrast, others tended to be a bit more ad hoc in terms of planning, and therefore shopping. These participants reported that they would decide what to eat each day and might quickly visit the supermarket on the way home. It was apparent during these discussions that this approach was more likely in situations in which men were more involved in day-to-day food choices.

And depending on the timing of the day, what’s happened during the day and that sort of thing, what we feel like, necessarily on the day, will be dependent on… well [my wife] either sorts it out in the morning, or puts the slow cooker on or something like that… [depending on] you know who’s going where, that day, because she’s working, at the moment, she’s teaching up at the uni so she’s there till five o’clock most nights of the week… I’ve got subjects or classes, until four or five, I’ve got one on a Monday that finishes at seven, in the evening. (Men, 35–50)

Finally, participants varied in their attitudes regarding whether they liked to have food in the freezer that could be ready to thaw and prepare, or whether they preferred to buy and eat fresh food.

Meal patterns

Timing of meals.

As noted above, participants across these groups reported that their patterns of eating, in particular the time at which they ate, were commonly governed by factors that they felt were external and therefore that they had no control over. Some mentioned that they would eat in the morning because they needed something to get through the start of the day. Even if they did not feel hungry at this time, they were aware that they would feel hungry before there was another chance to eat. From this perspective, for some people and some meals, food was about fuel. They would stock up to prevent themselves running low later on, even if they did not really feel like eating at the time. As noted above, participants in each of the groups talked about the routines and structures of their day-to-day existence determining when they could eat, and that this affected what they would eat. To some extent, they did not feel that this was an ideal approach but felt that they had limited capacity to do otherwise. Hence, in some situations, timing of eating was based on the desire to prevent later hunger, rather than as a response to current hunger.

I think, I mostly eat because, well I’m hungry and you have to, rather than oh my god that’s fantastic, and I’d love to cook it and eat it and enjoy it, I think it’s just more of a…. (Men, 35–50) You’ve got to eat, it’s fuel. (Men, 35–50) Yeah, like breakfast I wouldn’t normally eat, well I don’t enjoy breakfast, but I eat because I know, come nine o’clock, ten o’clock I’m going to be hungry I’m going to be lethargic, so I’ll force Wheeties in or some toast or… I do enjoy food but I don’t deliberately go out because I enjoy the taste or the texture or whatever, it’s more, well you have to eat. (Men, 35–50) If I know I’m travelling and I have to skip lunch or something, I’ll probably have a bigger, breakfast than normal, but if I know I’m going to have access to lunch, then no problem, I’ll just have something to keep me, just to get me there, rather than, cook up the big pancakes and the bacon and eggs, you’ve got to taste nice, I’ll be just a couple of bits of toast just to keep the hunger away. (Men, 35–50)

Standard and variable meals

Participants were prompted to talk about which meals were standard and which were more variable. For most participants, breakfast, lunch, and dinner were each affected by different factors, as were weekday and weekend meals.

Weekday vs. Weekend

Across the groups, weekdays tended to involve more structure, and therefore the weekday meals also tended to involve more structure. This appeared to be most obviously true for those with younger (primary school age) children but was also the case for those with older children and those who did not have or live with children. In other words, the typical weekday involved a degree of externally imposed structure (e.g., working hours: travel times: sporting activities), and for those who lived with others, this was further impacted by the need to coordinate times. For some, food choices tended to be group choices rather than individual choices, especially during the week. By contrast, weekends tended to involve more flexibility of schedules, and as a consequence, more time could be spent in food preparation and decisions about meals were less time and convenience based.

I cook…during the week is when I have…we have set meals and then weekends when I don’t cook… [during the week] we have a meal together every night…at the moment they’re all young so no-one’s out doing things. Yeah, I’m cooking a meal every night, but on the weekend it’s more relaxed, it’s like, “get your own". (Women, 35–45)

Breakfast, lunch, and dinner

While there were some exceptions across these groups, breakfast tended to be a more standard and regular meal. To a large degree, this was because time was a major issue, as breakfast needed to be consumed at a set time and in a brief period of time, typically while the family was getting ready for the day’s activities. Interestingly, some participants suggested that they did not experience the same need for variety when it came to breakfast as they did with other meals, commenting that they were happy to have the same thing day after day. As noted above, weekend breakfasts were commonly quite different from weekday breakfasts, being more about choice, enjoyment, and variety than time and convenience. Weekend breakfasts also tended to be more of a family event than simply eating something before the day’s activities.

However, some participants in each of the groups reported that they did not always eat breakfast, typically feeling that it was too early to eat. Amongst this group, some reported having breakfast some days and not others. These people reported they would wake up and decide whether they felt hungry, and if so, what they felt like eating.

It was also common for some to talk about breakfast being a time when they were more in touch with what they felt like eating, or whether they felt like eating at all, although the breakfast choices tended to be quite narrow (e.g., toast: cereal: fruit). Similarly, some reported that they had two or more standard breakfasts, and that they would choose on the day what they “feel like".

I just wake up and whatever I feel like… like if I wake up hungry, then I’ll go and have some, if I feel like cereal, then I’ll have cereal… and if I do sport in the morning, then I usually have toast… I just feel like toast after a run. (Women, 18–24) It can range from cereal or toast in the morning, my wife makes her own sourdough, so we have that in the morning, which is really good… depends on the mood, because what happens, if the kids wake up, it’s cereal, and I’ll do three bowls at the same time, one, two, three… If everyone is still sleeping, I’ll make my toast and wrap it up and eat it on the way to work so… it just depends on how you feel. (Men, 35–50)

As discussed earlier, lunches tended to vary according to where people were and what they were doing. Convenience was also a key driver for lunch time choices. For those not working during the day, lunches were commonly leftovers from the night before or simple snacks. The mothers talked about not really putting aside time or food for lunch, and often skipping it or simply not getting around to it. If they were not at home, lunch would depend on where they were and what they were doing. For those who were working, there was also the issue of choice being affected by the group, as was previously documented.

Dinner was generally regarded as the most important meal of the day and was afforded more effort and planning. All of the factors discussed previously as influencing food choices tended to be applied to dinners. Most obviously, weekday dinners tended to follow somewhat more of a routine, while there was greater variation and potentially a broader choice on the weekends.

Perceptions of own eating

Participants were asked to comment on how they felt about their diets and their approach to eating. The typical response was to say that it was mostly okay but could be improved. There was a tendency for participants to comment that they ate too much of some foods that they perceived as not good foods, and/or not enough of other foods that they perceived as good foods. Interestingly though, participants commonly responded to these questions with a range of justifications for the shortcomings that they perceived in their diets. For example, some would claim that it was okay that they ate so much high fat foods because they did a lot of exercise; others would report that it was okay because they had a “good metabolism".

Yeah I’m pretty happy with mine [diet], I think I drink too much Coke, I’m really addicted to Coke, but apart from that I’m pretty happy with it. I really love my vegetables, so we eat a lot of vegies… maybe I do justify it, but I really do think that I eat alright. (Women, 18–24) I’m so lucky I’ve got a really good metabolism, and also people will be like, I’ve got a block of chocolate down to fifteen minutes, because if I’ve got a five-hour shift, I only get a few minutes, and they are like but that’s so bad for you, yeah but it’s like calcium… and then if I’m at uni and I want to be healthy, I’ll have like steamed dim sims instead of fried dim sims… so I can justify it all in my head, and I know that it’s not right.(Women, 18–24)

Amongst the younger women in particular, some felt that as long as they were happy with their weight, their diet was all right.

Yeah that’s right, I’ll go for a run, and I do exercise, I don’t put on weight, I don’t, but I do exercise, but I think I do justify my bad eating because I don’t put on weight. (Women, 18–24)

Participants were prompted to discuss whether they ever ate too much, and if so, in what circumstances. Generally, participants felt that they were aware when they were eating too much, but as with comments about their diets in general, they tended to have reasons for doing so that made it acceptable in the circumstances. Commonly, participants reported that when they went out for a meal they would clean their plates even if they were full. They reported that serving sizes tended to be large and that they did not want to leave food if they had paid for it. A specific example of this was the ‘All you can eat’ deals. In the context of these discussions, there was some awareness of the idea of stopping before you feel full, but it was apparent that the actual practice of this idea was less than the knowledge. In essence, participants experienced far more benefits to eating till they were full than disadvantages.

A [chicken parmigiana] and a steak and it’s huge, I’ll, because it’s there, I’ll just keep going until it’s finished… half way through I’ve probably had enough, I’ll be thinking I’m not hungry anymore, but I’ll just keep going. (Men, 35–50). And because you’ve paid for it. (Men, 35–50).

Overall, these findings support Sobal and Bisogni’s [ 31 ] contention that food choice is multifaceted, situational, dynamic, and complexx. However, some components of their model received more affirmation than others. A key overarching theme from the findings was the strong and pervasive impact of external forces, or at least the perception of these forces, on what and when food is eaten. Although taste and preferences for particular foods, as well as health considerations, were mentioned, often as competing considerations [ 57 ], most of the discussion was about the impact of outside forces on food choice. These included family, work, and social structures, and the expectations (or perceived expectations) of family members, colleagues, friends, and others. According to Chen and Antonelli’s [ 32 ] food choice framework, these largely fall into the category, Food-external factors and, in particular, the Social environment sub-category.

The knowledge that one should be practicing healthy eating, which falls under the Framework’s Cognitive factor category, while seen as an aspiration by most participants, was often viewed as unrealistic, trumped by the need and/or desire for convenience, which might be considered a combination of Food-external factor: Social environment and Personal-state factor: Psychological components, in the Framework. Mete et al. [ 58 ], in a qualitative study with adults aged 25–58, also concluded that healthy food choices were important but not a daily priority, and that healthy eating information was known but viewed as difficult to apply to everyday life. Other research has noted the importance of convenience in food choice [ 59 – 60 ]. Jabs et al. [ 61 ], for example, in a study with low-wage employed mothers, found that most expressed feelings of time scarcity and that, while they prioritised feeding their children, they also wanted to complete meals quickly to move on to other tasks. Bava et al. [ 62 ] found that, while the working women in their study said they would ideally choose healthier food, the reality of their lives demanded convenience in food provision to minimise time and cognitive effort.

Other categories and sub-categories of Chen and Antonelli’s [ 32 ] framework, while less discussed by participants, were mentioned. Dearth of food choices when travelling for work, for example, might be categorised under Food-external factor: Physical environment. Personal-state factor: Habits and experiences was demonstrated by discussions around eating the same breakfast every day [ 63 ]. Personal-state factor: Physiological needs came up in discussions around needing to eat even if one didn’t feel like it in order to not go hungry later in the day, or with men's and boys' needs to eat bulky food to fill up. Desires or cravings for less healthy foods (Food-internal factor) were also perceived as working against the ideal of healthy eating.

Although our study did not seek to explore gender or life stage differences in food choice, several tendencies were observed, which future research may want to further explore. In particular, the women with children discussed food choice largely in terms of what others in the family– i.e., their partner and children– liked and which fit in with their schedules. The men, on the other hand, all of whom had children, more often spoke of eating to fill themselves up, or ‘food as fuel.’ Newcome et al. [ 64 ], in a study with partnered men, concluded that men in families displayed unease at expressing enjoyment in food (‘Men downplayed their hedonic consumption’), and instead spoke about food as being largely functional as fuel for their bodies. If these gender and life stage differences prove to be robust, this may suggest quite different public health messaging targeted to women with children, men with children, and those without partners or children. Much of the literature on food choice focuses on women, who continue to be more involved with family food decisions than do their male partners [ 65 ], and thus more is known about women’s food choices.

The findings from this study suggest that public health efforts aimed at educating and encouraging individuals to eat more healthfully are, on their own, insufficient to significantly improve healthy eating at a population level. These public health efforts need to be delivered in conjunction with legislation that removes structural barriers to promote healthy eating.

The vast majority of our participants knew they should be eating more healthfully but felt largely unable to do so. Instead, some of these identified structural barriers must be addressed. In particular, improvements to the food environment are needed, particularly in rural areas where distances are greater [ 66 ]. Greater provision of quickly preparable, accessible, and reasonably priced food, for example, would assist with some of the time barriers. More workplaces could consider providing free and accessible fruit or other healthy snacks for their employees [ 67 ]. Children’s sporting facilities could ensure that healthy foods are available [ 68 ].

As with any study, this one has several limitations. First, the focus groups were conducted in 2010; since then, various changes have occurred in the food environment that are potentially relevant to food choice and the findings from this study. These include the rapid proliferation of online food delivery services. There is evidence, for example, that such services increase the geographic access to foods prepared away from home and that these foods tend not to meet healthy eating recommendations [ 69 ]. There has also been a significant increase in the production and promotion of convenience and ultra-processed foods over this time [ 70 ]. In addition, the marketing of fast food, beverage, and snack brands has expanded via social media [ 71 ], with evidence that digital food marketing and social media can influence food choices, preferences, and consumption [ 72 ]. Therefore, our findings should be interpreted within this context. Future studies are needed to determine the extent to which the various barriers and enablers to healthy eating identified in this study continue to hold.

Second, the findings of this study are based on only three groups of people with a total of 23 participants, all of whom live in or near a rural region in Victoria, Australia. However, one would assume that many of the discussions around personal, family, and workplace factors would translate beyond this specific group of people, and particularly to other people living in Western countries in non-metropolitan areas. A third limitation of this study is that neither actual dietary intake data nor measures of nutritional knowledge was collected from participants, which would have allowed comparison of what participants discussed against more objective data. However, the focus of this study was on understanding how people think about their eating behaviours and perceptions of motivations and barriers to eating more healthily, rather than on whether their self-reports are factually correct. Moreover, we know that food diary data is often inaccurate [ 73 – 74 ]. Fourth, a single researcher conducted the focus groups and analysed the data. However, with thematic analysis, coding quality is not dependent on multiple coders [ 75 ]. The results were discussed with the other co-authors and the first author also read the transcripts. All three authors agreed with the findings.

Despite a plethora of information regarding how people should eat, surprisingly little research explores how and why people eat the way they do– particularly in a general population. Based on findings from focus groups with a range of participants from a rural region of Victoria, Australia, we found that, although decisions regarding when, what, and how much to eat are determined in part by taste preferences and health considerations, they are heavily influenced by a host of other factors. Moreover, many of these factors exist outside the control of the individual, including other household members’ preferences, family activities, and workplace and time constraints, as well as convenience and price. It appears, therefore, that education alone will not solve the problem of unhealthy eating. People want to eat healthier, or at least know they should eat healthier, but it’s all just too hard. It would seem, then, that a key to improving people’s eating behaviours is to make it easy to eat more healthfully, or at least not much harder than eating poorly.

Data availability

De-identified transcripts will be considered by the corresponding author upon request.Due to the nature of the data (i.e.,dSAZX a small number of focus group participants from a single geographic area), it is very difficult to anonymize the data. In addition, the participants did not provide explicit consent for the transcripts to be shared publicly.

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Acknowledgements

We would like to thank the Social Research Centre for conducting the focus groups at cost. We would also like to acknowledge the focus group participants, who generously shared information and insights about themselves and their families.

This study was funded in part by a Research Development Fund from Charles Sturt University. In addition, The Social Research Centre provided an in lieu contribution of four hours per week of author Van Dyke’s time to work on this project.

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NV conceived the project and wrote the main manuscript text other than the Results section. MM conducted the analysis of data and wrote the Results section. All authors reviewed the manuscript.

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Van Dyke, N., Murphy, M. & Drinkwater, E.J. “We know what we should be eating, but we don’t always do that.” How and why people eat the way they do: a qualitative study with rural australians. BMC Public Health 24 , 1240 (2024). https://doi.org/10.1186/s12889-024-18432-x

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