Focus groups

A focus group is a moderated qualitative discussion with participants selected because their experience or characteristics are relevant to a research question. The interaction among participants is part of the evidence: people compare, challenge and develop ideas in ways that an individual interview cannot reproduce.

When to use it

Use focus groups to explore language, beliefs, experiences, decision criteria and the range of views surrounding a topic. They are especially useful for developing hypotheses, refining a product or service, interpreting survey results and understanding how opinions are negotiated socially.

A typical session lasts between 90 minutes and 2 hours and covers five or six substantive questions. It can produce insight quickly, but it is not suitable for estimating how common a view is in a population or for subjects that participants cannot discuss safely in a group.

Origins

The modern focus group grew from the “focused interview” developed by sociologists Paul Lazarsfeld, Robert K. Merton and colleagues during mid-twentieth-century research into audience responses to radio and wartime communication. The method combined a group format with open, non-directive probing of participants’ interpretations. Marketing researchers adopted it widely, and it later returned to social science, evaluation, design and organisational research. Contemporary practice emphasises that the discussion is socially produced evidence, not a collection of independent survey answers.

What it is

A moderator introduces the purpose, creates safe discussion norms, asks open questions and probes differences without steering the group toward a preferred conclusion. An observer may manage notes and logistics. Useful formats include:

Two-way group:

one group observes another discussion and then examines what it noticed, with consent from everyone involved.

Dual moderator:

one moderator manages participation and rapport while another tracks the research topics.

Opposing moderator:

moderators introduce contrasting interpretations to test assumptions, while making clear that the positions are prompts rather than hidden agendas.

Respondent moderator:

a participant temporarily proposes or leads a question, which can reveal the group’s own priorities.

Client observation or participation:

a commissioning team observes transparently or joins under a disclosed role. Covert client participation is deceptive and should not be presented as a route to more candid data.

Mini group:

4 or 5 participants allow more individual depth than the more common 8 to 12, and may suit technical or sensitive subjects.

Why it matters

Focus groups reveal how people describe an issue, where views converge or conflict and which social cues shape the conversation. Product, service and change teams can hear needs and objections before committing to a design.

The output is interpretive. Silence does not mean agreement, confident speakers are not necessarily representative and non-verbal behaviour is ambiguous. Strong analysis preserves disagreement and context instead of collapsing the group into one supposed opinion.