What Is a Dissertation? | Guide, Examples, & Template
A dissertation is a long-form piece of academic writing based on original research conducted by you. It is usually submitted as the final step in order to finish a PhD program.
Your dissertation is probably the longest piece of writing you’ve ever completed. It requires solid research, writing, and analysis skills, and it can be intimidating to know where to begin.
Your department likely has guidelines related to how your dissertation should be structured. When in doubt, consult with your supervisor.
You can also download our full dissertation template in the format of your choice below. The template includes a ready-made table of contents with notes on what to include in each chapter, easily adaptable to your department’s requirements.
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- In the US, a dissertation generally refers to the collection of research you conducted to obtain a PhD.
- In other countries (such as the UK), a dissertation often refers to the research you conduct to obtain your bachelor’s or master’s degree.
Table of contents
- Dissertation committee and prospectus process
- How to write and structure a dissertation
- Title page
- Acknowledgements or preface
- Abstract
- Table of contents
- List of figures and tables
- List of abbreviations
- Glossary
- Introduction
- Literature review
- Methodology
- Results
- Discussion
- Conclusion
- Reference list
- Appendices
- Proofreading and editing
- Defending your dissertation
- Free checklist and lecture slides
Dissertation committee and prospectus process
When you’ve finished your coursework, as well as any comprehensive exams or other requirements, you advance to “ABD” (All But Dissertation) status. This means you’ve completed everything except your dissertation.
Prior to starting to write, you must form your committee and write your prospectus or proposal. Your committee comprises your adviser and a few other faculty members. They can be from your own department, or, if your work is more interdisciplinary, from other departments. Your committee will guide you through the dissertation process, and ultimately decide whether you pass your dissertation defense and receive your PhD.
Your prospectus is a formal document presented to your committee, usually orally in a defense, outlining your research aims and objectives and showing why your topic is relevant. After passing your prospectus defense, you’re ready to start your research and writing.
How to write and structure a dissertation
The structure of your dissertation depends on a variety of factors, such as your discipline, topic, and approach. Dissertations in the humanities are often structured more like a long essay, building an overall argument to support a central thesis, with chapters organized around different themes or case studies.
However, hard science and social science dissertations typically include a review of existing works, a methodology section, an analysis of your original research, and a presentation of your results, presented in different chapters.
Dissertation examples
We’ve compiled a list of dissertation examples to help you get started.
- Example dissertation #1: Heat, Wildfire and Energy Demand: An Examination of Residential Buildings and Community Equity (a dissertation by C. A. Antonopoulos about the impact of extreme heat and wildfire on residential buildings and occupant exposure risks).
- Example dissertation #2: Exploring Income Volatility and Financial Health Among Middle-Income Households (a dissertation by M. Addo about income volatility and declining economic security among middle-income households).
- Example dissertation #3: The Use of Mindfulness Meditation to Increase the Efficacy of Mirror Visual Feedback for Reducing Phantom Limb Pain in Amputees (a dissertation by N. S. Mills about the effect of mindfulness-based interventions on the relationship between mirror visual feedback and the pain level in amputees with phantom limb pain).
Title page
The very first page of your document contains your dissertation title, your name, department, institution, degree program, and submission date. Sometimes it also includes your student number, your supervisor’s name, and the university’s logo.
Acknowledgements or preface
The acknowledgements section is usually optional and gives space for you to thank everyone who helped you in writing your dissertation. This might include your supervisors, participants in your research, and friends or family who supported you. In some cases, your acknowledgements are part of a preface.
Read more about acknowledgementsRead more about prefaces
Abstract
The abstract is a short summary of your dissertation, usually about 150 to 300 words long. Though this may seem very short, it’s one of the most important parts of your dissertation, because it introduces your work to your audience.
Your abstract should:
- State your main topic and the aims of your research
- Describe your methods
- Summarize your main results
- State your conclusions
Table of contents
The table of contents lists all of your chapters, along with corresponding subheadings and page numbers. This gives your reader an overview of your structure and helps them easily navigate your document.
Remember to include all main parts of your dissertation in your table of contents, even the appendices. It’s easy to generate a table automatically in Word if you used heading styles. Generally speaking, you only include level 2 and level 3 headings, not every subheading you included in your finished work.
Read more about tables of contents
List of figures and tables
While not usually mandatory, it’s nice to include a list of figures and tables to help guide your reader if you have used a lot of these in your dissertation. It’s easy to generate one of these in Word using the Insert Caption feature.
Read more about lists of figures and tables
List of abbreviations
Similarly, if you have used a lot of abbreviations (especially industry-specific ones) in your dissertation, you can include them in an alphabetized list of abbreviations so that the reader can easily look up their meanings.
Read more about lists of abbreviations
Glossary
In addition to the list of abbreviations, if you find yourself using a lot of highly specialized terms that you worry will not be familiar to your reader, consider including a glossary. Here, alphabetize the terms and include a brief description or definition.
Introduction
The introduction serves to set up your dissertation’s topic, purpose, and relevance. It tells the reader what to expect in the rest of your dissertation. The introduction should:
- Establish your research topic, giving the background information needed to contextualize your work
- Narrow down the focus and define the scope of your research
- Discuss the state of existing research on the topic, showing your work’s relevance to a broader problem or debate
- Clearly state your research questions and objectives
- Outline the flow of the rest of your work
Everything in the introduction should be clear, engaging, and relevant. By the end, the reader should understand the what, why, and how of your research.
Literature review
A formative part of your research is your literature review. This helps you gain a thorough understanding of the academic work that already exists on your topic.
Literature reviews encompass:
- Finding relevant sources (e.g., books and journal articles)
- Assessing the credibility of your sources
- Critically analyzing and evaluating each source
- Drawing connections between them (e.g., themes, patterns, conflicts, or gaps) to strengthen your overall point
A literature review is not merely a summary of existing sources. Your literature review should have a coherent structure and argument that leads to a clear justification for your own research. It may aim to:
- Address a gap in the literature or build on existing knowledge
- Take a new theoretical or methodological approach to your topic
- Propose a solution to an unresolved problem or advance one side of a theoretical debate
Read more about literature reviews
Theoretical framework
Your literature review can often form the basis for your theoretical framework. Here, you define and analyze the key theories, concepts, and models that frame your research.
Read more about theoretical frameworks
Methodology
Your methodology chapter describes how you conducted your research, allowing your reader to critically assess its credibility. Your methodology section should accurately report what you did, as well as convince your reader that this was the best way to answer your research question.
A methodology section should generally include:
- The overall research approach (quantitative vs. qualitative) and research methods (e.g., a longitudinal study)
- Your data collection methods (e.g., interviews or a controlled experiment)
- Details of where, when, and with whom the research took place
- Any tools and materials you used (e.g., computer programs, lab equipment)
- Your data analysis methods (e.g., statistical analysis, discourse analysis)
- An evaluation or justification of your methods
Read more about methodology sections
Results
Your results section should highlight what your methodology discovered. You can structure this section around sub-questions, hypotheses, or themes, but avoid including any subjective or speculative interpretation here.
Your results section should:
- Concisely state each relevant result together with relevant descriptive statistics (e.g., mean, standard deviation) and inferential statistics (e.g., test statistics, p values)
- Briefly state how the result relates to the question or whether the hypothesis was supported
- Report all results that are relevant to your research questions, including any that did not meet your expectations.
Additional data (including raw numbers, full questionnaires, or interview transcripts) can be included as an appendix. You can include tables and figures, but only if they help the reader better understand your results.
Read more about results sections
Discussion
Your discussion section is your opportunity to explore the meaning and implications of your results in relation to your research question. Here, interpret your results in detail, discussing whether they met your expectations and how well they fit with the framework that you built in earlier chapters. Refer back to relevant source material to show how your results fit within existing research in your field.
Some guiding questions include:
- What do your results mean?
- Why do your results matter?
- What limitations do the results have?
If any of the results were unexpected, offer explanations for why this might be. It’s a good idea to consider alternative interpretations of your data.
Read more about discussion sections
Conclusion
Your dissertation’s conclusion should concisely answer your main research question, leaving your reader with a clear understanding of your central argument and emphasizing what your research has contributed to the field.
In some disciplines, the conclusion is just a short section preceding the discussion section, but in other contexts, it is the final chapter of your work. Here, you wrap up your dissertation with a final reflection on what you found, with recommendations for future research and concluding remarks.
It’s important to leave the reader with a clear impression of why your research matters. What have you added to what was already known? Why is your research necessary for the future of your field?
Reference list
It is crucial to include a reference list or list of works cited with the full details of all the sources that you used, in order to avoid plagiarism. Be sure to choose one citation style and follow it consistently throughout your dissertation. Each style has strict and specific formatting requirements.
Common styles include MLA, Chicago, and APA, but which style you use is often set by your department or your field.
Create APA citationsCreate MLA citations
Appendices
Your dissertation should contain only essential information that directly contributes to answering your research question. Documents such as interview transcripts or survey questions can be added as appendices, rather than adding them to the main body.
Proofreading and editing
Making sure that all of your sections are in the right place is only the first step to a well-written dissertation. Don’t forget to leave plenty of time for editing and proofreading, as grammar mistakes and sloppy spelling errors can really negatively impact your work.
Dissertations can take up to five years to write, so you will definitely want to make sure that everything is perfect before submitting. You may want to consider using a professional dissertation editing service, AI proofreader or grammar checker to make sure your final project is perfect prior to submitting.
Defending your dissertation
After your written dissertation is approved, your committee will schedule a defense. Similarly to defending your prospectus, dissertation defenses are oral presentations of your work. You’ll present your dissertation, and your committee will ask you questions. Many departments allow family members, friends, and other people who are interested to join as well.
After your defense, your committee will meet, and then inform you whether you have passed. Keep in mind that defenses are usually just a formality; most committees will have resolved any serious issues with your work with you far prior to your defense, giving you ample time to fix any problems.
Free checklist and lecture slides
As you write your dissertation, you can use this simple checklist to make sure you’ve included all the essentials.
Checklist: Dissertation
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Learn more about dissertation editing services Return to checklistIf you’re an educator, feel free to download and adapt these slides to teach your students about structuring a dissertation.