Dissertation structure: the standard chapters

By Dr. Rafiq Muhammad, MD, PhD · Updated June 2026

Almost every dissertation, in almost every field, is built on the same skeleton — five core chapters, each answering one question, wrapped in front and back matter. Learn the skeleton and the blank page stops being terrifying: you’re no longer “writing a dissertation,” you’re filling in five well-defined chapters in turn.

The five core chapters

1. Introduction. The problem, your aim and questions, and why it matters — the proposal’s argument, matured.
2. Literature Review. Where your work sits in the field and the gap it fills — synthesised, not listed (see how to structure a review).
3. Methodology. How you did it, reproducibly, with every choice justified (see the methodology chapter).
4. Results. What you found — factual, organised, no interpretation.
5. Discussion / Conclusion. What it means, how it relates to prior work, the limitations, and where it goes next (see the discussion chapter).

This is the IMRaD logic, expanded — the literature review gets its own chapter, and each section becomes a chapter in its own right.

Front and back matter

The common variations

The five-chapter model is the default, not a law. Two frequent variants: some fields merge results and discussion into one chapter (common in qualitative work); and many sciences use a thesis by publication, where the core chapters are published or submitted papers bookended by an introduction and a synthesis. Always follow your department’s convention and word limit — those override any general template.