The scope of a dissertation is what you chose to study and the boundaries you set around it. The limitations are the constraints on what your findings can support, whether you chose them or not. Scope is stated in the introduction as a decision; limitations are stated in the discussion as a qualification. Confusing the two is the commonest version of this mistake.
This guide separates the three terms UK markers distinguish, gives you worked sentences for each of the six limitation types, and shows you the difference between a limitation that earns marks and one that reads as an apology.
What is the difference between scope, delimitations and limitations?
| Term | What it is | Chosen by you? | Where it goes |
|---|---|---|---|
| Scope | What the study covers — population, setting, period, variables | Yes | Introduction |
| Delimitations | The boundaries you deliberately set, and why | Yes | Introduction, sometimes methodology |
| Limitations | Constraints on what the findings can support | Often not | Discussion |
The practical test is a single question: could I have done otherwise? If yes, it is a delimitation and belongs in the introduction as a decision you justify. If no, it is a limitation and belongs in the discussion as a qualification you acknowledge.
“I studied only nursing students” is a delimitation if you chose that population for a reason, and a limitation only in so far as it restricts generalisation. Both statements can be true about the same fact, which is why the two sections are not redundant.
How do you write the scope statement?
Four sentences at the end of your introduction, in this order: what the study covers, what it deliberately excludes, why that boundary, and what the boundary means for the claims you will make. It sits as move six of the standard introduction structure — our guide to the dissertation introduction chapter shows where.
This study examines hybrid working arrangements and retention intention among employees of English SMEs with fewer than 250 staff. It does not address public-sector organisations, firms outside England, or actual turnover as distinct from stated intention. The restriction to SMEs is deliberate: the mechanism under examination is theorised to operate through informal social ties, which formal HR policy in larger firms may substitute for. Findings therefore speak to organisations without formal HR functions and should not be read as applying to large employers.
That last sentence is the one students omit, and it is the one that converts a list of exclusions into an argument. A scope statement that does not say what the boundary does to your claims is only half written.
How do you decide what to leave out?
Most undergraduate projects are too broad in the first draft, and narrowing them is the single most reliable improvement available. Three principles do the work.
- Cut whatever your research question does not require. Read the question aloud and list the things you must measure to answer it. Anything not on that list is a candidate for exclusion, however interesting.
- Keep what the mechanism needs. If your explanation depends on a distinction — junior versus senior staff, primary versus secondary settings — you cannot exclude the thing that makes the distinction visible, even to save time.
- Exclude what you cannot do well. A second data source you will collect badly weakens the dissertation more than its absence would. Narrow and thorough beats broad and thin at every classification boundary.
Then write the reason down at the moment you decide, because you will need it twice: once in the scope statement, and once in the discussion when a reader asks why you did not look at the thing you deliberately did not look at.
What are the six types of limitation?
Nearly every undergraduate limitation is one of these. Naming the type makes the paragraph easier to write and easier for a marker to credit.
| Type | Worked sentence |
|---|---|
| Sample | “The sample was drawn from a single institution and was predominantly female, so the findings may not transfer to more mixed populations.” |
| Design | “Because the design was cross-sectional, the association observed cannot establish the direction of causation.” |
| Measurement | “Retention intention was self-reported at a single time point, and stated intention is an imperfect proxy for subsequent behaviour.” |
| Scope | “Only English SMEs were studied, so sector and regional variation could not be examined.” |
| Analysis | “The achieved sample size gave limited power to detect a small interaction effect, so the null result for the moderator should be read cautiously.” |
| Researcher | “As a current employee of one participating organisation, the researcher’s position may have influenced what participants were willing to say.” |
The researcher row is required rather than optional in several subjects. Education and social work dissertations are expected to include a positionality statement, and our guide to the education methodology chapter covers the paragraph markers look for.
What makes a limitation earn marks rather than lose them?
Three things, and students usually supply only the first.
- Name it precisely. “The sample was small” is a confession. “The achieved sample of 48 gives limited power to detect effects below a medium size” is an analysis.
- State the consequence for your specific claim. Which of your findings is weakened, and how? A limitation with no stated consequence is decoration.
- Say what would fix it. One clause, pointing at a future design. This is what turns the limitations section into the recommendations section.
A fully worked example of all three in one paragraph:
The design was cross-sectional, with autonomy and retention intention measured at the same moment. This means the association reported in section 5.2 is consistent with either causal direction — greater autonomy may increase intention to stay, or employees already intending to stay may negotiate more autonomy. The finding should therefore be read as establishing a relationship rather than an effect. A longitudinal design measuring autonomy before a subsequent retention outcome would separate the two, and is the obvious next step for this question.
What should you not apologise for?
Three things that undergraduates routinely list as limitations and should not.
- Being an undergraduate. Time and resources are the conditions of the assessment, not a flaw in the study. “Due to time constraints” adds nothing a marker does not already know.
- A deliberate delimitation. If you chose the boundary and justified it in the introduction, do not re-present it in the discussion as a failing.
- A null result. A well-designed study that found no effect has found something. Report it as a finding, then discuss power honestly — and if your statistical assumptions caused the problem instead, our guide to what to do when your assumptions fail covers the options.
What you should never do is conceal a real limitation. Markers reward the student who names the weakness in their own work before the examiner does, and the calibre of the limitations section is one of the clearest signals of critical judgement available in the whole dissertation — which is exactly what the published UK marking criteria reward at the upper band boundaries.
Where do they go in the dissertation?
Scope and delimitations: the end of the introduction, with a sentence or two repeated in the methodology where a specific boundary was a design choice. Limitations: the discussion chapter, after you have interpreted your findings and before your recommendations, so that each recommendation answers a limitation you have just named.
Some departments ask for a separate short “Limitations” section; others want them woven into the discussion. Both are common in the UK, and your handbook decides. Where the section sits relative to everything else depends on your project’s shape — see our guide to undergraduate dissertation structure by subject.
If the analysis is done and the discussion is what remains, Tesify drafts your discussion and limitations from the findings you actually have. Everything stays 100% written by you, and it is free to start.
Frequently asked questions
What are the scope and limitations of a dissertation?
The scope is what the study covers and the boundaries you set around it, stated in the introduction. The limitations are the constraints on what your findings can support, stated in the discussion. Scope is a decision; limitations are a qualification.
What is the difference between limitations and delimitations?
Delimitations are boundaries you chose and can justify. Limitations are constraints you did not choose, or could not avoid, that restrict what your findings mean. The test is whether you could have done otherwise.
How long should the limitations section be?
Usually 300–500 words in an undergraduate dissertation, covering three or four real limitations properly rather than eight superficially.
How many limitations should I include?
Three to five, each with a stated consequence. A longer list reads as padding, and a list of one reads as insufficient self-criticism.
Does admitting limitations lose me marks?
No. It is one of the clearest ways to demonstrate critical judgement, which is what separates the upper degree classifications. Concealing a limitation a marker can see is what costs marks.
Should limitations go in the abstract?
Usually not in an undergraduate abstract, where space is tight and the findings take priority. Check your handbook — our guide to writing the abstract covers what has to fit.
Is “small sample size” a good limitation?
Only when quantified and connected to a consequence. State the achieved number, what it means for statistical power, and which of your specific findings it qualifies. Our guide to sample size for an undergraduate dissertation covers how to justify the number you got.
Do qualitative dissertations have limitations too?
Yes, but framed differently — transferability rather than generalisability, and researcher positionality rather than sampling error. The obligation to state what the findings can and cannot support is identical.
Can I write the limitations before I finish the analysis?
You can draft the design and scope limitations as soon as the methodology is fixed, because they follow from choices you have already made. The analysis and measurement limitations have to wait for results.