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Observation in Research: Participant, Structured, Overt and Covert

Reviewed by Prof. Dr. Alexander Holtermann · Updated 16 October 2026 · 5 min read

Observation means systematically watching and recording behavior in its setting. Key choices: participant or not, structured or not, overt or covert.

Key takeaways

  • Observation captures what people actually do, not what they say they do, which makes it a strong complement to surveys and interviews.
  • Three key decisions: participant vs non-participant, structured vs unstructured, overt vs covert. Each combination fits different questions.
  • Structured observation uses a coding scheme and yields numbers (quantitative); unstructured observation produces field notes (qualitative, often ethnographic).
  • The observer effect (people change behavior when watched) is the main threat to validity; it usually fades with time and familiarity.
  • Covert observation raises serious ethical issues and needs strong justification and explicit ethics approval.

What is observation as a research method?

Observation is the systematic watching, listening to and recording of behavior, interactions and settings. It differs from everyday watching in three ways: it follows a research question, it is planned, and it is documented in a way others can follow.

Observation is valuable whenever there is a gap between what people say and what they do. Teachers may report giving all students equal attention; an observation of who gets called on may show something different. It is also the method of choice when participants cannot easily report on their behavior, for example young children or routine actions people are not aware of.

Types of observation

Observation designs vary along several dimensions. Describe your choice on each in your methods chapter.

DimensionOption AOption B
Researcher roleParticipant: you take part in the activityNon-participant: you watch from outside
Degree of structureStructured: predefined categories and coding sheetUnstructured: open field notes
OpennessOvert: participants know they are observedCovert: participants do not know
SettingNatural (field): classroom, ward, workplaceArtificial (lab): controlled conditions
Who is observedOthers (external observation)Oneself (self-observation, e.g. diaries)

Observer roles (Gold, 1958)

A classic typology by Raymond Gold distinguishes four roles along a continuum from full participation to pure observation. Most student projects use one of the middle roles.

RoleDescriptionExample
Complete participantFully involved, identity as researcher hiddenWorking as a barista while secretly studying café culture
Participant-as-observerInvolved, research role known to the groupJoining a student society for a term as an open researcher
Observer-as-participantMainly observing, brief interactionsSitting in on team meetings, occasional short chats
Complete observerNo interactionObserving behavior in a library from a distance

Structured observation: building a coding scheme

In structured observation you define in advance what you will record, how and when. A coding scheme lists categories that are mutually exclusive and clearly defined, with examples. Sampling can be by time (e.g. record what happens every 30 seconds) or by event (record every instance of a behavior).

  • Define each category with an inclusion rule and an example.
  • Train observers and pilot the scheme in one or two sessions.
  • Check agreement between observers on a subset.
  • Report frequencies, rates per hour and agreement statistics.

Unstructured observation and field notes

In qualitative and ethnographic observation, you record what you see and experience in detailed field notes. Separate description from interpretation: write what happened, then your reflections in a separate column or marked section.

  • Jotted notes during or right after the observation: key words, quotes, times.
  • Full field notes the same day: detailed description of setting, people, actions, conversations.
  • Analytic memos: first interpretations, questions, ideas for the next session.
  • Reflexive notes: your own feelings, role and possible influence on the situation.

Validity: the observer effect and other problems

People often behave differently when they know they are being watched, an effect sometimes called reactivity. Reduce it by spending time in the field before recording data, being unobtrusive and observing over several sessions. Other threats include selective perception (seeing what you expect), going native in long participant observation (losing critical distance) and fatigue in long sessions. Combine observation with interviews or documents to triangulate.

Ethics: overt vs covert observation

Overt observation requires informed consent from those observed, or at least from gatekeepers and those directly involved, depending on the setting. Covert observation deceives participants and is only acceptable in exceptional cases, for example when open observation would make the research impossible and the topic has high public interest, and only with explicit ethics approval. Observing in public spaces still raises questions about privacy and recording. Never record audio or video without consent. Your university’s research ethics committee, or IRB in the US, will decide; their guidelines and your department’s rules take precedence.

Analysis and tools

Structured observation data are analyzed statistically (frequencies, comparisons, agreement statistics). Field notes are analyzed qualitatively, for example with thematic analysis. At /codieren you can code field notes like interview transcripts and keep your coding scheme with definitions and examples. The methods tool helps you decide whether observation fits your question. Upload your university’s guidelines to Professor Digital and the advice is tailored to them.

Frequently asked questions

What are the main types of observation in research?

Participant vs non-participant, structured vs unstructured, overt vs covert, and natural vs artificial settings. Most studies combine one option from each dimension.

What is participant observation?

A qualitative method in which the researcher takes part in the activities of the group being studied while observing and taking field notes, typical of ethnography.

What is the difference between structured and unstructured observation?

Structured observation records predefined categories with a coding scheme and produces numbers. Unstructured observation records open field notes and produces qualitative data.

Is covert observation ethical?

Only in exceptional, well-justified cases with explicit ethics approval, because participants cannot consent. In student research it is rarely approved.

What is the observer effect?

People change their behavior because they know they are being observed. Longer presence in the field, unobtrusive observation and triangulation reduce it.

Sources and further reading

  • Clark, T., Foster, L., Sloan, L., & Bryman, A. (2021). Bryman’s Social Research Methods (6th ed.). Oxford University Press.
  • Creswell, J. W., & Creswell, J. D. (2023). Research Design: Qualitative, Quantitative, and Mixed Methods Approaches (6th ed.). Sage.

Your university’s examination regulations and style guide always take precedence.

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