How to write a research question
What separates a strong dissertation research question from a weak one, with tests you can run on your own question before you commit to it.
9 min read · Reviewed 2026 · Written and reviewed by Chris McGarrigle
Your research question is the single most load-bearing sentence in your dissertation. Every chapter is downstream of it: the literature you review, the method you choose, the data you collect and the argument you defend in your viva.
A good question is narrow, answerable with the evidence you can realistically gather, and open enough that the answer is not already obvious.
The four properties of a strong question
Test any candidate question against these four properties before you commit to it.
- Specific: a reader can tell exactly what will be studied and where.
- Answerable: the evidence needed exists and you can access it.
- Non-trivial: the answer is not already settled in the literature.
- Bounded: it can be answered within your word count and timescale.
Choose the question type deliberately
'What' and 'how' questions usually lead to descriptive or exploratory qualitative work. 'To what extent' and 'what is the relationship between' questions imply measurement and quantitative analysis. 'Why' questions are the most demanding because they require you to rule out alternative explanations.
Pick the stem that matches the method you are able to run, not the one that sounds most academic.
Sub-questions do the structural work
Two to four sub-questions break the main question into chapters and analytical steps. Each sub-question should map to an objective, and each objective should map to something you actually do — an interview set, a dataset, a document analysis.
Stress test it
Ask: if my data came back the opposite way, would that still be a legitimate answer? If the only possible result is the one you already believe, the question is closed and you are heading for a descriptive dissertation.
Common mistakes
- Two questions welded together with 'and'.
- A question that can be answered yes or no in a sentence.
- Loaded wording that assumes the conclusion.
- A question requiring data you have no route to.
Try this: Rewrite it three ways
- Write your question as a 'what' question.
- Rewrite it as a 'to what extent' question.
- Rewrite it as a 'how do participants describe' question.
- Choose the version whose method you can actually deliver, and say why in one sentence.
Do it in SuperDiss
Build the question, then stress test it against the four properties.
Open the Research Question builderStudents also ask
- What makes a good dissertation research question?
- A good research question is answerable with evidence you can actually collect, specific about population, phenomenon and context, and open enough to require analysis rather than a yes/no answer. It should also point clearly at a method.
- How many research questions should a dissertation have?
- One main research question, supported by two to four objectives. Multiple competing main questions is the most common reason a dissertation loses its golden thread.
- Can I change my research question later?
- Yes, and most students do — but change it before data collection, and record the reason in your research journal so your methodology chapter can justify the shift.
Related research: plan and question
Turn the topic into a defensible research question, aims, objectives and a proposal.
Research aims and objectives: what they are and how to write them
The difference between a research aim and research objectives, with a method for writing objectives that are specific, achievable and assessable.
How to write a dissertation proposal
What a dissertation proposal must contain, how long each section should be, and how supervisors decide whether to approve it.
Building a realistic dissertation timeline
How to plan a dissertation timeline backwards from your deadline, with realistic time allocations for each stage and buffer for setbacks.
Continue your dissertation journey
- What is a research gap?
- Research aims and objectives: what they are and how to write them
- How to choose a methodology
- How to write a literature review
- How to choose a dissertation topic
Browse every guide in dissertation planning.
Read next
How to choose a dissertation topic
A practical method for choosing a dissertation topic you can actually research: start from curiosity, test feasibility, and narrow until the topic is doable.
How to choose a methodology
A decision path from research question to methodology, plus how to write the justification examiners are looking for.
This guide is general educational content. Your institution's regulations, handbook and supervisor's instructions always take precedence. Where a named framework is mentioned, consult the original source text rather than relying on this summary.