Interpretivism vs positivism: which fits your dissertation?

Core differences at a glance

The two positions differ across ontology, epistemology, typical methods and the researcher's relationship to the data.

• Positivism: objective reality, knowledge through measurement, typically quantitative surveys or experiments, researcher aims for detachment.
• Interpretivism: socially constructed reality, knowledge through understanding meaning, typically qualitative interviews or ethnography, researcher accepts their own interpretation shapes findings.
• Positivism favours large samples and statistical generalisation; interpretivism favours depth, context and transferability rather than statistical generalisation.
• Positivism asks 'what is the relationship between variables'; interpretivism asks 'how do people experience or make sense of this'.

A quick test for your own project

Ask what kind of answer your research question actually needs. If the honest answer is a number, a correlation, or a test of a hypothesis, you are working in a broadly positivist tradition. If the honest answer is a description of how people understand, experience or give meaning to something, you are working in a broadly interpretivist tradition.

Be wary of a mismatch: choosing an interpretivist justification while running a structured questionnaire with closed Likert-scale questions, or vice versa, is one of the most common inconsistencies examiners flag.

What each position means for your write-up

A positivist study typically states hypotheses, reports sample size and statistical tests, and discusses generalisability to a wider population. An interpretivist study typically describes the context richly, discusses reflexivity, and discusses transferability to similar (not statistically representative) settings rather than generalisability.

Where critical realism and pragmatism fit in

Not every project sits neatly at either end. Critical realism accepts an objective reality exists but treats our knowledge of it as always partial and socially mediated, which is often used to justify explanatory qualitative work or mixed methods. Pragmatism sidesteps the ontological debate altogether and simply asks which methods best answer the question, which is a common and defensible justification for combining a survey with follow-up interviews.

Common misuses to avoid

Do not claim positivism simply because you used a survey — some surveys with open-ended qualitative questions are analysed interpretively. Do not claim interpretivism simply because your sample is small — sample size is a design decision, not a philosophical one. The paradigm is about how you understand knowledge and reality, not about your data collection tool alone.

Students also ask

What is the main difference between positivism and interpretivism?

Positivism treats reality as objective and measurable and seeks knowledge through observation and hypothesis testing, typically using quantitative methods. Interpretivism treats reality as socially constructed and seeks knowledge through understanding how people interpret their experience, typically using qualitative methods.

Can a dissertation use both positivism and interpretivism?

Yes, often justified through pragmatism, which prioritises whatever methods best answer the research question over strict adherence to one paradigm, or through critical realism, which accepts an objective reality while treating knowledge of it as partial and socially mediated.

How do I know if my dissertation is positivist or interpretivist?

Check what kind of answer your research question actually needs. If it needs a number, correlation or hypothesis test, you are working in a broadly positivist tradition. If it needs a description of how people experience or make sense of something, you are working in a broadly interpretivist tradition.