Explainer · Plain-language

What is empirical research?

Empirical research draws conclusions from observed or measured evidence — data gathered through systematic observation or experiment — rather than from theory, intuition, or argument alone.

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Grounded in observed evidence

The word empirical means "based on experience or observation". Empirical research therefore answers its question by collecting and analysing real-world data — measurements, survey responses, experimental results, recorded behaviour — rather than relying on logic, authority, or opinion. This evidence is called empirical evidence: information obtained through the senses or instruments and recorded systematically. A study is empirical if its conclusions can, in principle, be checked against the data on which they rest. That accountability to observable evidence is what separates empirical work from theoretical modelling, philosophical argument, or untested intuition.

The shape of an empirical study

Empirical research typically follows a recognisable arc: a research question or hypothesis, a defined method for gathering data, the data collection itself, analysis, and interpretation. Methods may be quantitative (numerical measurement and statistics), qualitative (interviews, observation, textual analysis), or mixed. Variables are usually given operational definitions so the measurements are concrete and repeatable. The journal article reporting such a study first-hand is a primary source. Reporting standards — and the structure of a typical research paper — exist to make each of these steps transparent so that the evidence, not the author’s say-so, carries the argument.

Why empiricism anchors science

Empirical research is the engine of evidence-based knowledge. Because its claims are tied to observable data, they can be tested, challenged, and reproduced — the basis of reproducibility and research integrity. Open data and FAIR principles extend this by making the underlying empirical evidence findable and reusable, so others can verify or build on it. Empiricism does not make findings infallible; bias, flawed measurement, or weak validity can still mislead. Its strength is that it exposes claims to evidence and to the scrutiny of others, which over time corrects error more reliably than argument alone.

Key facts

At a glance

Definition: research that draws conclusions from observed or measured evidence
Evidence: empirical evidence — data gathered by observation or experiment
Methods: quantitative, qualitative or mixed; systematic and documented
Contrast: differs from theoretical, philosophical or anecdotal approaches
Output: a first-hand report of an empirical study is a primary source
Why it matters: claims are testable, reproducible and open to scrutiny

Common misconceptions

What people often get wrong

Often heard: Empirical research means quantitative, statistics-based research only.

Actually: Empirical simply means evidence-based. Qualitative work — interviews, observation, ethnography — is equally empirical when conclusions rest on systematically gathered, analysable data.

Often heard: If research is empirical, its findings must be correct.

Actually: Empirical grounding does not guarantee truth. Bias, measurement error, or poor validity can distort results; empiricism’s value is that it makes claims testable and open to correction.

Often heard: A literature review or theoretical paper is empirical research.

Actually: Those works analyse existing ideas or studies rather than collecting new observed data, so they are not themselves empirical research, though they may inform or synthesise it.

Going deeper