How to structure a PhD thesis

Start from the regulations, not from a template

Every university publishes rules for the format of a thesis: required sections, word or page limits, declarations, and the order of the front matter. Those rules override any general guide, including this one. Read them first, then look at recent theses from your own department to see how your discipline applies them.

The conventional structure

Humanities and law theses often replace the methodology, findings and discussion chapters with several thematic chapters, each developing one part of the argument. The logic is the same: the introduction sets a question, the middle chapters build the answer, and the conclusion states it.

What each chapter must contain

Introduction

Background, the research problem, the research questions or hypotheses, the objectives, the scope, a short statement of the method, the contribution, and an outline of the chapters. A reader should finish it knowing what the thesis claims.

Literature review

A synthesis organised by theme or debate, not a list of summaries. It ends by stating the gap your research fills. See how to write a literature review.

Methodology

The design, the data or sources, how they were selected, how they were analysed, ethical considerations and limitations. Justify each choice. See choosing a research methodology.

Findings

Results reported in an order that follows the research questions. Keep interpretation for the discussion unless your discipline combines the two.

Discussion

What the findings mean, how they agree or disagree with earlier work, and what explains the difference.

Conclusion

The answer to each research question, the contribution to knowledge, limitations, and recommendations for practice or further research. No new evidence belongs here.

Front and back matter

Title page, declaration, certificate, acknowledgements, abstract, table of contents, lists of tables, figures and abbreviations come before the chapters. References and appendices come after. The order and wording of the declaration and certificate are set by your university.

Test the structure with one table

Before writing in full, draw a table with one row for each research question and four columns: the literature that motivates it, the data or sources that address it, the chapter and section where it is answered, and the answer in one sentence. An empty cell shows a hole in the thesis while it is still cheap to fix. Examiners make the same check in their heads.

Common structural problems

• Research questions in the introduction that the conclusion never answers.
• A literature review that summarises sources one by one and never states the gap.
• A methodology chapter that describes what was done without saying why.
• Findings and discussion mixed so that readers cannot tell evidence from interpretation.
• A conclusion that repeats the chapter summaries instead of stating the contribution.

Sources and further reading

Your own university's research degree regulations are the authority on format. For reporting standards by study type, see the EQUATOR Network.