What is the difference between delimitations and limitations?

Delimitations are boundaries you choose — decisions like studying only undergraduates or one city. Limitations are constraints you do not choose — weaknesses such as a small sample, self-report bias, or low response rate that affect the results. In short: delimitations are deliberate, limitations are imposed.

How do you write the scope and delimitations?

State plainly what the study covers (population, variables, setting, time frame), then list the boundaries you set and a brief justification for each. Frame delimitations as reasoned design choices that keep the study focused and feasible, not as apologies. Each boundary should connect to your aim and your resources.

Why are delimitations important in a proposal?

They show the reviewer you have made deliberate, defensible choices and that the study is focused and feasible rather than sprawling. Clear delimitations also pre-empt the criticism that you ignored something, by showing you excluded it on purpose and explaining why.

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Scope and delimitations

Q: What are scope and delimitations?

The scope is what your study covers — the topic, population, variables, setting, and time frame it addresses. Delimitations are the boundaries you deliberately set, and the reasons for them: what you chose to include and exclude, such as focusing on one age group or one region. Together they define exactly what the study will and will not do.

By Dr. Rafiq Muhammad, MD, PhD · Updated June 2026

Your scope is what the study covers; your delimitations are the boundaries you deliberately set, and why. Done well, this short section makes a proposal look focused and defensible. The thing that trips people up: delimitations (chosen) are not limitations (imposed) — confusing the two is one of the most common proposal errors.

Three terms, kept straight

Term	Means	Example
Scope	What the study covers	Stress in first-year nurses, one hospital, 2026
Delimitations	Boundaries you chose	Only first-years; only one site — by design
Limitations	Constraints you didn’t choose	Small sample; self-report bias

The one-line test: delimitations are deliberate, limitations are imposed.

How to write the scope

State plainly what the study addresses: the population, the variables, the setting, and the time frame. A reader should finish the paragraph knowing exactly what’s in and what’s out.

How to write the delimitations

List each boundary you set — population, geography, variables, methods, period.
Give a brief reason for each, tied to your aim and resources.
Frame them as reasoned choices, not apologies. “I focused on X to keep the study feasible” — not “unfortunately I could only…”

Good delimitations pre-empt the “but you ignored Y” critique by showing you excluded Y on purpose, and why.

Boundaries usually come from your question being too broad. The free Research Question Validator helps you tighten the question first, so the delimitations follow naturally instead of feeling arbitrary.

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A proposal-section outline, a scope-and-delimitations template, and worked examples from Research Proposal Writing Simplified. We’ll email you the download link.

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Frequently asked questions

What are scope and delimitations?

Scope is what the study covers (population, variables, setting, time); delimitations are the boundaries you deliberately set, and why.

Delimitations vs limitations?

Delimitations are boundaries you choose; limitations are constraints you don’t. Deliberate vs imposed.

How do you write them?

State what the study covers, then list each chosen boundary with a brief, aim-linked justification — as choices, not apologies.

Why do they matter?

They show deliberate, defensible choices and a focused, feasible study — and pre-empt the “you ignored Y” critique.

Significance of the study → Research aims & objectives →