How to Write a Literature Review That Identifies Genuine Research Gaps

What Is a Literature Review?

A literature review is a critical evaluation of existing research related to your topic. It goes beyond summarising studies and instead builds an argument that leads to your research problem.

Doctoral-level literature reviews demonstrate your understanding of theoretical foundations, methodologies, and ongoing scholarly debates within your discipline.

Purpose of a Literature Review

The purpose of a literature review is to establish context for your research and identify gaps that justify your study. It also demonstrates that you are familiar with key scholars and debates.

Developing a Search Strategy

Begin with academic databases such as Scopus, Web of Science, and Google Scholar. Use keywords related to your research topic and refine them iteratively.

Document your search process. This ensures transparency and helps you revisit sources efficiently.

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A systematic search strategy is the backbone of a credible literature review.

Synthesising the Literature

Synthesising involves comparing and contrasting studies rather than listing them individually. Group literature by themes, methodologies, or theoretical approaches.

Your synthesis should show how research evolves and where inconsistencies exist.

Identifying Research Gaps

Research gaps emerge when you critically evaluate limitations, contradictions, or unexplored areas in existing studies.

You may identify gaps in population, context, methodology, theory, or timeframe.

Common Mistakes

Avoid these common literature review mistakes to strengthen your research foundation.

Final Checklist

Use this checklist before finalising your literature review.

• Includes recent and seminal studies
• Literature grouped into logical themes
• Critical analysis present
• Research gap clearly identified
• Proper citation format used
• Logical flow between sections