What is the Difference Between a Dissertation and a Thesis?
Major Differences Between Thesis vs Dissertation
Difference Between Thesis and Dissertation in the US vs UK
Similarities Between Thesis and Dissertation
Common Challenges While Writing Thesis and Dissertation
FAQs About Difference Between Thesis vs Dissertation
What is a Thesis?
A thesis is an academic document that reports the in-depth investigation you conducted on a research problem, often marking the culmination of a master’s graduate program. Writing a thesis can be an intensive exercise, one that’s meant to prepare you for a rich career in academic research.
Purpose of a Thesis
The main purpose of a thesis is to test a student’s ability to execute a research project independently. From identifying the research problem and framing an effective thesis statement to reporting the findings objectively and drawing relevant conclusions—preparing a thesis allows you to show your mastery of the chosen subject area.
Thesis is also meant to evaluate your critical thinking skills, train you in academic writing, and determine whether you can contribute something original to existing literature (e.g., exploring a new aspect of an existing methodology or interpreting known findings in a different way).
Structure of a Thesis
The structure of a thesis varies across disciplines and universities. However, a typical thesis structure can be as follows: Title page, Abstract, Introduction, Literature review, Methodology, Results, Discussion, Conclusion, References, Appendices (if applicable).
The title page provides information about you, your university, your supervisor, and the thesis title. The rest of the thesis is then divided into sections logically to take your evaluator through the research work.
- Abstract: brief overview of the study
- Introduction: research background, objective, hypothesis, thesis statement
- Literature review: detailed review of existing literature to highlight the research gap
- Methodology: research design, details of the experiment, materials and methods used, data collection and analysis, ethical considerations
- Results: present your findings without making interpretations; use figures, graphs, tables, and other display items to showcase results effectively
- Discussion: interpret the results, compare findings with existing literature, answer the research question posed in the Introduction
- Conclusion: summarize the study implications and highlight future scope
- References: list the works you referred in the required format
- Appendices: supplementary materials and files, if any
What is a Dissertation?
A dissertation is much more rigorous than a thesis and is often the capstone of a doctoral program that involves intense research work. In comparison to a thesis, a dissertation requires you to make significant contribution to further the research in your discipline.
Purpose of a Dissertation
A doctoral dissertation showcases how well you have mastered the theoretical concepts and whether you can practically apply those learnings by conceiving, designing, and executing original research. Preparing a dissertation warrants highly advanced knowledge of the field, which enables you to make substantial novel contribution to scholarly practices in your subject area.
A dissertation can also be considered a starting point of a journal article. Defending a dissertation successfully helps establish yourself as an independent researcher.
Structure of a Dissertation
The overall structure of a dissertation is similar to that of a thesis. The difference would be in the depth of content presented in each section:
- Introduction: After the abstract, introduce the problem statement of your research. List the research questions you intend to answer, highlight the significance of the study, and briefly explain the theoretical or conceptual framework the research will follow.
- Literature review: Provide a comprehensive and critical review of existing knowledge, identify the key research gaps that your dissertation addresses.
- Methodology: Detailed description of the methods, justifying why the research design was selected. Also include information of study participants, data sources, experimental equipment, procedures, data collection/analysis, and research ethics.
- Results: Present all outcomes systemically; both qualitative and quantitative findings must be summarized.
- Discussion & Conclusion: Outline your interpretations by comparing the findings with previously reported results. Specify study limitations, broader implications, and future recommendations.
Major Differences Between Thesis vs Dissertation
| Feature | Thesis | Dissertation |
| Academic level | Master’s degree | Doctoral (PhD) degree |
| Research depth | Shows mastery of a topic in the subject area | Extensive, original research to make substantial scientific contribution |
| Document length | Approximately 100 pages or fewer | Can range from 200 to 300 pages (or more) |
| Editing complexity | Moderate; validate thoroughness of analysis and compliance | High; check for compliance, verify accuracy of reported findings, ensure alignment of results with methods |
| Literature review | Synthesizes existing knowledge and identifies areas of potential research | Critical and comprehensive review of literature to identity key research gaps |
| Methodology review | Explores new avenues from published literature | In-depth explanation of research design with justification of why that approach was selected |
| Time required | 6 to 12 months (depending on semester and university) | 2 to 5 years (or more) |
| Results/findings | Builds on previously reported work | Reports novel, original findings |
Difference Between Thesis and Dissertation in the US vs UK
The English language in the UK and US differs significantly. We’ve addressed this in our article on American English vs British English. So naturally, the terminology of thesis and dissertation also differs in the two countries.
Dissertation vs Thesis in US
In the US, a thesis is what you prepare at the end of your master’s (or, at times, bachelor’s) program. It is not as extensive as a dissertation, which is what you submit to obtain your doctoral (PhD) degree.
Dissertation vs Thesis in UK
In the UK and other European countries, the definitions are swapped. A thesis is a scholarly work that’s presented as part of your doctoral program—to successfully obtain your PhD degree. Whereas a dissertation is a shorter, less intensive academic piece that is submitted at the end of your master’s or bachelor’s program.
Similarities Between Thesis and Dissertation
Despite the difference, thesis and dissertation share several common characteristics:
- Both works are mandatory to graduate from an academic program, be it at a master’s level or a doctorate level.
- Theses and dissertations test a student’s ability to execute research work, their critical analysis skills, and their approach to addressing a research problem.
- They also evaluate how well students understand the academic landscape and whether they are prepared for a career in research.
Finally, both thesis and dissertation help build one of the crucial traits for a researcher: maintaining research integrity. There is absolutely no scope for misconduct of any type (e.g., plagiarism, AI misuse, non-compliance with ethical requirements, etc.), making you aware of what the scientific community expects.
Common Challenges While Writing Thesis and Dissertation
1. Selecting the Right Research Topic
The topic of your thesis or dissertation forms the crux for the entire research project. Often, students make the mistake of selecting a research topic that’s either too broad to be effectively covered or that’s too narrow to find sufficient literature to explore and investigate. If this happens, you are likely to lose interest midway through your thesis/dissertation preparation due to the growing challenges.
What you should do: Spend time to finalize the topic. You can brainstorm 2 to 3 related ideas, broadly examine the potential of existing knowledge, and then formulate a specific research problem within a feasible scope.
2. Developing a Strong Research Methodology
How you collect and analyze the research data matters just as much as the problem being addressed.
- Is your research methodology justifiable?
- Can you convince your evaluators that the chosen investigation method was the best option available?
- Have you mindlessly adopted an existing technique without proper scientific rationale?
All these are questions you should ask before building your analytical approach.
What you should do: Keep your personal preferences aside. Align the research methodology, be it quantitative, qualitative, or mixed methods, with the research question so that you find the solution to the identified problem in a justifiable manner.
3. Structuring the Thesis or Dissertation Properly
It’s not enough for you to “know” the typical structure expected from a thesis or dissertation. There should be proper logical progression throughout the document. Yes, the IMRaD (Introduction, Methods, Results, and Discussion) format works well. But does the content within each of these sections flow well? Is your research argument clearly highlighted and thoroughly addressed? Does the literature review provide a critical analysis of existing knowledge rather than a summarized list of existing works? These are some common mistakes that should be avoided.
What you should do: Create an organizational roadmap, a proper outline of the chapters and sub-chapters, before beginning to write the thesis/dissertation. Ensure a seamless transition between paragraphs, sub-chapters, and chapters alike. The thesis/dissertation must feel like a single, unified scholarly document instead of independent sections forcefully strung together.
4. Editing and Proofreading the Final Draft
The final submitted thesis or dissertation should be professional. Examiners are often put off by spelling errors, formatting inconsistencies, grammatical mistakes, and punctuation and styling errors.
What you should do: Make sure that you’ve followed all the required formatting guidelines set forth by your university. After completing your own checks, have an external pair of eyes do a final proofread of your thesis/dissertation. You may use expert thesis editing services or request your peers to review the document.
FAQs About Difference Between Thesis vs Dissertation
1. What is the main difference between a thesis and a dissertation?
A thesis is typically prepared to mark the end of a master’s program. It is deemed to be less rigorous in terms of research depth, execution, and complexity compared to a dissertation.
A dissertation is typically presented to culminate your doctoral program. You are expected to explore an original research topic in significant depth to make substantial contribution to furthering existing knowledge in the subject area.
2. Do PhDs have a thesis or dissertation?
It depends on the country and your university. Most universities in the US confer the PhD degree after you have completed your dissertation. But in the UK and other parts of Europe, PhDs are offered after you have successfully defended your thesis.
The difference is only in the terminology. To obtain your PhD, you need to provide an in-depth investigation of original research work and present your defense to a committee of examiners and evaluators.
3. How long does it take to complete a thesis or dissertation?
The duration to complete a thesis or dissertation is often decided by the academic level.
- A thesis at a bachelor’s level can be completed within three months for a short research project.
- At the master’s level, your thesis can take anywhere between six to twelve months to research, write, and present.
- A doctoral dissertation or thesis could take from two years to five (or more) years, depending on whether you are successfully able to defend your thesis.
4. Can a dissertation or thesis be professionally edited before submission?
Yes! Universities often set guidelines on thesis/dissertation submissions, and a professionally edited thesis is well-received. You need to disclose in your submission that you have used thesis editing services, how they supported your work (language editing, formatting checks, etc.), and include an editing certificate if needed.
5. How long does professional thesis or dissertation editing typically take?
The time required for editing your thesis professionally depends on the length of your document, the level of writing, and the extent of changes needed. Editage’s thesis editing service can deliver your assignment within 3 days of submission after a thorough two-level subject expert evaluation.
