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Home » Blog » How to Write a PhD Thesis | EasyMarks

Academic Writing Tips

How to Write a PhD Thesis

Produce an original contribution to knowledge over the long haul.

8 min read · Written by UK academic writers

Quick Answer

A PhD thesis presents an original contribution to knowledge, developed over several years of independent research. It is far longer and more demanding than a dissertation, requiring a sustained argument across many chapters, rigorous methodology and a defence at the viva.

A PhD thesis is the most substantial piece of academic writing most people ever attempt. Its scale demands strategy and stamina as much as intelligence. This guide outlines how to approach it.

Aim for an Original Contribution

The defining feature of a PhD is an original contribution to knowledge. Everything in the thesis should build towards and demonstrate that contribution.

Plan a Long, Multi-Chapter Structure

A thesis typically includes an introduction, extensive literature review, methodology, several results or analysis chapters, a discussion and a conclusion. Plan this structure early.

Write Steadily Over Time

A thesis cannot be rushed at the end. Write regularly throughout your research, treat each chapter as a project, and accept that early drafts will be revised heavily.

  • Write while you research, not only after
  • Set chapter milestones across the years
  • Expect and welcome supervisor feedback

Maintain a Sustained Argument

Across hundreds of pages, the thesis must hold together as one argument. Use clear signposting and link each chapter back to your central contribution.

Prepare for Examination

A PhD ends with examination and a viva. Write with examiners in mind, ensure your contribution and originality are explicit, and prepare to defend your work in detail.

Key Takeaways
  • A PhD must make an original contribution
  • Plan a long, multi-chapter structure early
  • Write steadily throughout your research
  • Hold the whole thesis together as one argument
  • Prepare for examination and the viva

Frequently Asked Questions

How long is a PhD thesis?

It varies by field, but doctoral theses are typically far longer than dissertations, often running to many tens of thousands of words.

What makes a PhD thesis different from a dissertation?

A PhD requires an original contribution to knowledge and is far larger and more rigorous than a taught dissertation.

How long does a PhD take to write?

The thesis is written over the course of a multi-year research programme, ideally drafted steadily rather than at the end.

What happens after I submit my thesis?

It is examined and you defend it in a viva, after which corrections are usually required before final approval.

Related Guides & Services

Preparing for the VivaHow to Write a DissertationLiterature ReviewThesis Writing ServiceDissertation Writing Service

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