Scope and delimitations in a nursing dissertation explain what your study covers and the boundaries you deliberately choose. A clear section identifies the population, setting, topic and evidence included, then explains why those decisions fit the research question.
Without these boundaries, a project can drift from one group or clinical problem to another. Conversely, a narrow study may appear arbitrary if the reader cannot see the reason for its focus. This guide shows how to describe and justify the boundaries using original nursing examples.
Use your programme handbook and approved proposal as the starting point. This article develops a specific subsection of the introduction or methodology; it does not replace our Chapter 1 framing guide.
What is the scope of a dissertation?
The scope describes the extent of the enquiry. It tells the reader what phenomenon is being investigated, whose experiences or outcomes matter, where the research is situated and what evidence is used. Depending on the design, it may also identify a time period or particular variables.
A title alone rarely establishes all these details. A project about medication adherence could involve older adults living at home, young adults attending outpatient services or patients following hospital discharge. Each option creates a different study and different evidence needs.
Write the scope as a clear account of the enquiry rather than a list of unrelated labels. Connect the population, setting and phenomenon with the question. A qualitative exploration of experiences requires different wording from an analysis of associations between measured variables.
The scope should remain proportionate to your resources and academic level. However, manageable size is only one consideration. The boundaries must also make methodological sense and allow the study to address its approved aim.
What are delimitations?
Delimitations are boundaries deliberately selected by the researcher. Saint Peter’s University’s dissertation guidance describes them as choices that help focus an enquiry and align it with its purpose (Saint Peter’s University, n.d.). Examples include selecting a particular age group, clinical setting, evidence type or geographical context.
The scope states what the project covers. Delimitations explain the chosen edges of that coverage, including relevant exclusions and their rationale. You may present them together if your handbook uses a combined heading.
For instance, a dissertation may examine newly registered nurses’ experiences of handover on adult inpatient wards. Restricting the participant group to newly registered nurses is a delimitation. The rationale might be that the question concerns transition into professional practice.
However, explain the rationale from the actual study. Do not claim that a population was deliberately excluded if it was originally eligible but could not be recruited. Report the intended boundary and what actually happened separately.
Scope, delimitations, limitations and assumptions
| Term | Main question | Fictional example |
|---|---|---|
| Scope | What does the enquiry cover? | Experiences of discharge education among adults managing a long-term condition. |
| Delimitation | Which boundary was deliberately chosen? | The study focuses on adults receiving education in a community service. |
| Limitation | What constrains the strength or reach of interpretation? | Self-selection may mean some experiences are under-represented. |
| Assumption | Which premise does the study rely on? | Participants can provide meaningful accounts of the education they received. |
A chosen boundary can create a limitation. Selecting one site is a delimitation; the restricted applicability of the findings to other settings may be a limitation. Treating these as connected ideas is more accurate than insisting they are completely unrelated.
Likewise, constraints are not always wholly outside the researcher’s control. A design decision can affect the strength of inference. Explain the decision in the appropriate place and discuss its consequence honestly.
For premises underlying the enquiry, read our separate research assumptions guide. This article concentrates on chosen study boundaries.
Which boundaries should you describe?
Begin with the research question and identify the dimensions necessary to understand it. You do not need to state every conceivable exclusion. Select the boundaries that determine who or what is included and how the findings should be interpreted.
- Population: relevant participants, patients, staff or published study populations.
- Setting: clinical service, community context, organisation or geographical area.
- Phenomenon: the experience, intervention, outcome or issue being examined.
- Time: recruitment period, record coverage or justified publication range.
- Evidence: interviews, questionnaires, records or eligible published studies.
- Variables or concepts: the specific measures or aspects addressed.
Define ambiguous terms. For example, “older adults” needs a clear meaning consistent with the proposal or review criteria. Similarly, “newly registered” should refer to an identified career period rather than whatever interpretation a reader happens to use.
Keep wording consistent across the title, aim, question, eligibility criteria and conclusions. A mismatch among those elements is a more serious problem than the absence of a long delimitations paragraph.
How to justify a delimitation
Use three linked components: the choice, the reason and the implication. First state the selected boundary. Next explain how it fits the question or design. Finally clarify what the boundary means for claims beyond the study.
Weak wording: “The research only includes community nurses because the dissertation cannot cover everything.”
More careful wording: “The enquiry focuses on community nurses because the research question concerns coordination of care in patients’ homes. Hospital-based nursing is excluded because its organisational context differs from the context being investigated. The findings will therefore be interpreted in relation to community practice.”
The improved paragraph explains relevance. Feasibility may still be discussed, but it does not become the sole justification. If the real reason was a restricted access agreement, say so accurately and consider the effect on the scope.
Avoid implying that excluded groups are unimportant. They are outside this particular enquiry. You can acknowledge their relevance without expanding the project to answer a second question.
If your question is still too broad, our research-question guide can help clarify its population and focus.
Example for a qualitative nursing dissertation
The following example is fictional. It illustrates how the boundary, rationale and consequence can be connected. It should be adapted to an approved study rather than copied as a claim about work you have done.
This study explores newly registered nurses’ experiences of communicating concerns during adult inpatient handovers. It focuses on nurses within the career period defined in the approved eligibility criteria. Student nurses and staff working exclusively in children’s services are excluded because the enquiry addresses transition into registered practice within adult care. Interviews examine participants’ experiences rather than independently measuring the frequency of handover errors. Findings will be interpreted within the selected clinical context.
The paragraph establishes participant group, setting and phenomenon. It also defines the type of evidence: experiences reported in interviews. It does not claim that interviews can determine the actual rate of clinical errors.
Specific recruitment arrangements, sample justification and interview procedures belong in methodology. Use this subsection to establish boundaries, then direct the reader to those details rather than repeating the entire method.
Example for a quantitative nursing dissertation
In a quantitative project, scope may concern the population, variables and observation period. The delimitations should fit the measurements actually available and the design’s ability to answer the question.
The study examines the association between self-reported sleep quality and fatigue among adult-care nurses working rotating shifts in the participating service. It includes the measures specified in the approved questionnaire and collects information during the defined survey period. Nurses working fixed daytime schedules are excluded because the question concerns rotating-shift work. The study describes associations within the surveyed group and does not establish that shift patterns caused fatigue.
This example avoids turning a cross-sectional association into a causal conclusion. It also explains why one working pattern is included and another is excluded.
Replace the measures and period with those used in the real project. Do not invent a sample size or collection date to make the scope appear complete. For analysis planning, refer to our methodology chapter checklist.
Example for a literature-based dissertation
A review’s boundaries may include population, context, concept, study design, publication period and language. These choices should be specified in the protocol or eligibility criteria and explained in relation to the review question.
The review examines nurses’ experiences of providing discharge education to adults managing a long-term condition. It includes eligible qualitative studies within the healthcare contexts defined in the protocol. Studies concerned only with children’s services or with professionals outside nursing are excluded because they do not address the specified population and professional perspective. Any language or publication-period restrictions are stated and justified in the search methods, and their possible effect on the evidence base is considered in the discussion.
The example avoids prescribing an arbitrary publication range. A recent date cut-off may fit a question about a newly introduced policy, while a different question may require older evidence. Explain the reason rather than automatically limiting all reviews to five years.
Distinguish planned criteria from retrieval problems. An eligible paper that could not be obtained is not the same as a paper excluded by design. For the procedural detail, use our systematic-review search strategy guide.
Where should scope and delimitations appear?
Follow the structure specified by your university. A brief scope statement may sit in the introduction, with fuller eligibility and design details in methodology. Some templates require an explicit combined heading. Others expect the boundaries to be explained across the relevant subsections.
The University of Portsmouth’s dissertation guidance emphasises that its structural outline is general and that course requirements should be checked with a supervisor (University of Portsmouth, n.d.). That principle applies here: do not rearrange an approved nursing dissertation solely to match another institution’s template.
Where boundaries appear in more than one chapter, each mention should serve a different function. The introduction establishes the focus. The methods explain how the focus was implemented. The discussion considers its consequences.
For the wider arrangement, see our dissertation structure guide.
When the scope changes during the project
Research plans may change because of recruitment, data access, supervisor feedback or a revised question. Do not silently rewrite the original plan to make every change appear deliberate from the beginning. Record the change and obtain any approval required by your programme or research arrangements.
For a completed project, distinguish the intended scope from the evidence actually available. For example, a survey planned across two services may ultimately include responses from one. Report that outcome and explain what it means for interpretation.
Check the whole dissertation after an approved change. Update the title if necessary, the aim, the question, the eligibility criteria and the conclusion. A scope paragraph that describes the new study is insufficient if other chapters still describe the old one.
A narrower evidence base does not automatically invalidate the project. However, the claims must fit the evidence obtained. The discussion should identify what remains unanswered rather than implying that the original wider question was fully resolved.
Scope and delimitations in a nursing dissertation: a planning worksheet
Write the approved research question at the top of a page. Underneath it, create columns for included evidence, excluded evidence and reason. Complete the worksheet before polishing prose. This makes it easier to notice a boundary that appears in the eligibility criteria but has never been justified.
For each decision, ask whether the exclusion follows from the question or merely makes the project easier. Practical constraints can be legitimate, but they should be stated honestly. If a language restriction arises from available resources, explain that reason and consider the possible effect on the review.
Next, compare the worksheet with the data-collection instrument or extraction form. If your question concerns continuity of care but your materials capture only satisfaction, the scope statement cannot resolve that mismatch. Review the alignment before gathering or interpreting evidence.
Use the worksheet as a drafting aid. It does not need to become an appendix unless your programme requires it. Convert its important decisions into connected paragraphs and place detailed procedures in methodology.
Auditing scope and delimitations in a nursing dissertation before submission
Read the title, abstract and conclusion together. These sections should describe the same population and enquiry. If the title concerns all adult nurses but the evidence comes from newly registered staff in one service, consider whether the title and claims need qualification.
Then examine each objective. An objective outside the defined scope may create an unanswered obligation. For example, a study of staff experiences cannot automatically meet an objective to measure patient outcomes unless suitable outcome data were collected.
Check the discussion for statements about excluded groups. You can compare findings with wider literature, but distinguish that comparison from evidence generated by your study. The dissertation’s own results should not be presented as findings about people or settings that were never included.
Finally, ensure that all approved changes are reflected consistently. The scope, methodology and limitations should explain the same completed project. Remove outdated details left behind from earlier versions of the proposal.
How to handle supervisor feedback on study boundaries
A comment that the project is too broad usually requires more than shortening a paragraph. Identify which dimension creates the problem: population, setting, phenomenon, outcomes, time or evidence type. Then discuss an appropriate adjustment that still addresses the central question.
A comment that the project is too narrow calls for a different response. The concern may be insufficient evidence, limited relevance or an exclusion without justification. Investigate the reason before expanding the question. Adding another population can introduce new ethical, recruitment or analytical demands.
When a boundary is challenged, explain the original reasoning and the alternative considered. A revision can retain the boundary if its rationale is defensible. Conversely, a weak choice should not be protected simply because it appears in the first draft.
Keep any change consistent with required approvals. For example, a revised participant group may affect recruitment materials and an ethics application. A changed review population may affect search terms, screening criteria and the extraction framework.
After agreeing the revision, describe the final boundary clearly and record its implications. Strong scope writing tells readers exactly what enquiry they are assessing. It also prevents a narrow, useful project from making broader claims than its evidence supports.
Frequently asked questions
Are scope and delimitations the same?
They are closely connected. Scope describes the coverage of the study; delimitations identify its intentionally chosen boundaries and the reasoning behind them.
Is a single-site study a delimitation or limitation?
Deliberately selecting one site is a delimitation. Its consequences for applying findings elsewhere may be discussed as a limitation. If access failed unexpectedly, report that separately.
How long should this section be?
Follow the handbook and overall word allocation. Include enough detail to explain important boundaries and their rationale. A fixed online word count should not override your brief.
Can a publication date restriction be a delimitation?
Yes, when it is deliberately selected as an eligibility boundary. Explain why it suits the question and consider which evidence it may exclude.
Conclusion and final checklist
Compare the scope with the title, aim, question and methods. Confirm that the chosen exclusions are justified, unexpected constraints are reported honestly and conclusions remain within the evidence. Remove broad claims about populations or settings the dissertation did not examine.
If you need help checking those connections, send your approved question, brief and current draft. A focused methodology or editing review can identify inconsistencies and clarify boundaries within your agreed project.
For personalised feedback on your scope and delimitations, explore our focused nursing dissertation section review and request a quote for the sections you need checked.
About our nursing dissertation support
Explore Nursing Dissertation Service for focused academic guidance. Read our approach and standards, see how support works and review student feedback before choosing assistance. If your scope is clear, submit your project details for review. Support should follow your university’s rules and help you understand and improve your own work.
References
Saint Peter’s University (n.d.) Writing Chapter One: Problem and Procedures. Available at: Crafting the Dissertation (Accessed: 5 October 2026).
University of Portsmouth (n.d.) Structuring a primary research dissertation. Available at: University of Portsmouth Library guidance (Accessed: 5 October 2026).
