Interviews and focus groups

Introduction to Social Research Methodology

Author
Affiliation

Ben Stanley

Department of Social Sciences, SWPS University

Published

December 22, 2026

The qualitative interview

Why interview?

Surveys tell you that something is happening: the percentage dissatisfied, the turnover rate, the mean engagement score. Interviews are how you find out why. They capture meanings, motives, and experiences that resist reduction to numbers — what Babbie treats as the territory of qualitative field research. Unlike the survey researcher, the interviewer rarely arrives with precise hypotheses to be tested; more often the task is to make sense of an ongoing process that cannot be fully predicted in advance, and a skilled interviewer picks up nuances of attitude and behaviour that escape any standardised instrument.

The organisational relevance is direct. Meridian’s exit statistics show turnover doubling from 14% to 27% in two years, but the numbers cannot say whether people leave because of pay, rotas, managers, or something nobody has thought to put on a form. Interviews can. Note that the choice among qualitative approaches was settled in session 7; this session assumes an interview study is the right design and asks how to do it well.

The structure continuum

Interviews are not one method but a continuum, defined by how much is fixed in advance. At one end, structured interviews deliver a predetermined set of questions in a consistent order, identically for every participant. In the middle, semi-structured interviews organise open-ended questions into a guide while leaving the interviewer free to reorder, follow up, and probe. At the far end, unstructured interviews have no fixed questions at all: the interviewer steers a conversation shaped by the participant’s own narrative. The further along the continuum you move, the more depth and discovery you gain — and the more comparability and speed you give up.

Type Character Typical uses Main considerations
Structured Standardised format; same questions, same order; closed or tightly framed responses; quantifiable, easy to code; highly focused on research objectives Market research (e.g. rating a new store layout 1–5), standardised HR assessments Speed and consistency, but little depth; nuances of individual experience are overlooked
Semi-structured Guided flexibility: predetermined open questions as a skeleton, with freedom to diverge and probe; open-ended responses in participants’ own words; adapts to each participant The workhorse of organisational research — e.g. “How would you describe the work culture here?” followed by “Can you tell me about a specific experience that shaped that view?” Yields both comparable coverage and unexpected insight, but demands a skilled interviewer and time-consuming analysis
Unstructured Open and exploratory; no fixed questions; flow directed by the participant’s narrative; each interview distinct Life histories, oral history, crisis and trauma research (“Tell me about your journey,” then follow their lead) Deep exploration and trust, but highly time-consuming, hard to compare, and most exposed to interviewer bias

Fully unstructured interviews are rare in organisational work, but their techniques — following the participant’s lead, tolerating silence — improve every semi-structured interview.

Strengths and weaknesses of interviews

Aspect Strength Weakness
Data Depth — topics can be explored in detail Qualitative data are harder and slower to analyse
Process Flexibility — questions can be modified in light of answers Time-consuming to schedule, conduct, and transcribe
Accuracy Immediate chance to clarify misunderstandings The interviewer’s presence may influence responses
Relationship Personal rapport encourages genuine answers Costly, especially where travel or transcription services are needed

Babbie’s general verdict on qualitative field methods is worth memorising: compared with surveys and experiments, their measurements tend to have more validity but less reliability — a richer grasp of the truth, produced by a less repeatable procedure — and they are generally not appropriate for producing statistical descriptions of large populations.

Building the interview guide

From research questions to interview questions

The single most common beginner’s error is reading the research question out loud to the participant. “Why is turnover at Meridian rising?” is a question for the researcher; no employee experiences their working life as an answer to it. Interview questions must translate the research question into the participant’s own world: concrete experiences, specific events, everyday language. One research question typically generates several interview questions, and every interview question should trace back to a research question — if it does not, it has no business in the guide.

Preparation follows a fixed order: clear objectives first (know what you need to learn), then questions, then a pilot of the guide on a colleague before it is used in earnest. Participants should also be prepared: they must know the purpose, duration, and format of the interview before agreeing to it.

Anatomy of an interview guide

A semi-structured guide has a deliberate shape, not just a list of questions:

Component Purpose Example
Opening question Easy, factual, unthreatening; builds rapport and gets the participant talking “Could you start by telling me about your role and how long you’ve been here?”
Key questions The three to six open questions that carry the research, ordered from general to specific and from comfortable to sensitive “How has your experience of working here changed over the past two years?”
Probes Planned follow-ups written under each key question, used only if needed “Can you give me a specific instance of that?”
Closing question Hands control to the participant and winds the conversation down gently “Is there anything important about this that I haven’t asked?”

Logical flow matters: each question should feel like a natural next step in a conversation, not an item on an interrogation checklist.

Question technique

Open framing. Open questions invite a narrative: how, what, tell me about, walk me through. Closed questions invite a single word — do you, is it, how many — which is useful for establishing facts but fatal for depth.

Avoiding leading questions. A leading question smuggles the answer into the question. “Don’t you think the new rota system caused people to leave?” invites agreement; “How, if at all, did the new rota system feature in people’s decisions to leave?” invites evidence. Ask one question at a time — double-barrelled questions get half-answers — and use the participant’s vocabulary rather than management jargon or your own analytical categories.

Probes and follow-ups. The probe is where interviews earn their keep; it is the difference between a spoken questionnaire and a real interview.

Probe How it works
Silence The simplest probe: count slowly to five before rescuing the participant, and they will usually keep going
Echo probe Repeat their last phrase with a rising tone: “…you felt invisible?”
Elaboration probe “Can you say more about that?” / “What happened next?”
Example probe “Can you give me a specific instance?”
Clarification probe “When you say ‘management’, who do you mean exactly?”

Probes must be as non-leading as the questions they follow.

Active listening. Interviewing is mostly listening: a good ratio is the participant talking for around 80% of the time. Active listening means signalling attention — nods, minimal encouragers — without signalling approval or disapproval of the content, since a visible reaction is itself a leading question. Resist the urge to fill silences, finish sentences, or share your own views. The best follow-ups pick up something the participant said ten minutes earlier, showing that you truly heard it; and the guide should be held lightly — if question four is answered during question one, tick it off and move on rather than asking it again.

Conducting the interview in practice

Practicalities

Recording should be the default — it frees you to listen rather than scribble — but always with consent: ask explicitly before starting, and explain how the recording will be stored and used. No recorder captures everything, so take brief notes as well, recording both what you “know” happened and what you “think” it meant; Babbie’s advice is to keep empirical observation and interpretation distinguishable in your notes.

Practical parameters worth planning in advance:

  • Transcription — budget roughly four to six hours of work per hour of audio; automated transcription helps but must be checked and corrected against the recording.
  • Location — private, quiet, and neutral: a booked meeting room, not the manager’s office and not the open-plan floor.
  • Duration — 45–60 minutes is the sweet spot; tell participants the expected length in advance and honour it.

Interviewer effects

The interviewer is a research instrument, and an imperfect one: your presence shapes what people say. Social desirability leads participants to edit their answers to appear reasonable, loyal, or employable. Visible characteristics — age, gender, dress, apparent status — and invisible ones — your reactions, your organisational role — all colour responses. Interviewer effects cannot be eliminated; they can be reduced and reported: neutral wording, neutral reactions, consistent technique, and honesty in the write-up about who interviewed whom. This is one reason field measurements score high on validity but lower on reliability — a different interviewer would produce a somewhat different conversation.

Interviewing up and down the hierarchy

Organisational interviewing is rarely a conversation between equals, and the power gap causes problems in both directions. Interviewing up — executives and senior managers — tends to produce polished, rehearsed “official” answers; well-prepared specifics and gentle persistence are needed to get behind them. Interviewing down — your own subordinates or junior staff — raises the sharper problem of consent: can a subordinate genuinely say no to a “voluntary” interview requested by their manager? Interviewing your own colleagues brings its own distortions: prior relationships contaminate both what is said and how you hear it, and promises of confidentiality are harder to make credible when you share a corridor.

Recall session 4: consent must be free as well as informed. Where the hierarchy makes freedom doubtful, the remedy is structural — use an external interviewer or an independent researcher rather than relying on reassurances. The Meridian case makes the point concrete: if the HR director conducts the exit interviews personally, there is a long list of things departing employees will simply not say.

Focus groups

What a focus group is — and when to use one

In a focus group, typically five to fifteen people are brought together in a private, comfortable environment for a guided discussion of a topic. The approach is widely used by market researchers asking groups to evaluate products and by organisations exploring how a policy or change will be understood. Participants do not statistically represent any meaningful population; the purpose is to explore rather than to describe or explain in any definitive sense. Precisely because a single group of five to fifteen people may be unrepresentative even of its own kind, studies typically convene more than one group.

The defining asset of the method is interaction. Participants react to, build on, and challenge each other’s views, so the researcher watches opinions being formed, defended, and revised in real time — something no one-to-one interview can show. Group talk also surfaces the shared vocabulary and social norms of a workplace: what can be said openly, what is joked about, what falls silent. Choose a focus group when the research question concerns collective sense-making (how do Meridian store teams collectively interpret the new performance targets?); choose individual interviews for individual experience, sensitive matters, or anything people will not say in front of peers.

Composition and size

Six to eight participants is the practical optimum: large enough for diverse views, small enough that everyone speaks. The guiding principle is homogeneity within groups, variety between them — people talk more freely among peers, so groups should be composed by role or level, and managers should never be mixed with their own subordinates. Diversity across the study is achieved by running several differently composed groups (store staff; supervisors; the e-commerce team), not by forcing it into one room. Strangers usually talk more honestly than close colleagues, though in organisational research some acquaintance is often unavoidable. Plan for 60–90 minutes, and over-recruit slightly, since someone always fails to appear.

The moderator’s craft

The moderator keeps the discussion on topic without leading it — guiding the process, never the content. Three recurring challenges define the craft:

Challenge What happens Moderator’s response
Dominators One or two voices overshadow the rest Break eye contact; thank and redirect: “That’s clear; I’d like to hear how others see it”
Silent participants Some members never enter the discussion Invite by name, gently; use round-robin openers so everyone speaks early — whoever speaks first sets the norm
Groupthink The group converges on a comfortable consensus Probe for difference — “Has anyone had a different experience?” — and legitimise dissent

The moderator must stay neutral in word and in face: a nodding moderator is a leading question in human form. A second researcher taking notes on who says what, and how the group reacts, is worth a great deal at analysis time.

Practical organisation

An effective focus group needs a structured discussion guide — a short list of topics and open questions, fewer than for an individual interview; five or six questions is plenty for ninety minutes. The environment should be comfortable and neutral: a quiet private room, refreshments, and seating arranged so that everyone can see everyone. Recording requires consent from every participant, plus a ground rule agreed by the group that what is said in the room stays in the room. Note that confidentiality is structurally weaker than in interviews: the researcher can promise their own discretion but not that of seven other participants, and recruitment materials should say so honestly. The ethical basics from session 4 carry over: informed consent, no deception about the purpose, and feedback of findings where appropriate.

Strengths and weaknesses of focus groups

Aspect Strength Weakness
Perspectives Diverse viewpoints gathered in one setting Dominant voices can overshadow others
Interaction Participants react to each other’s views Conformity pressure; discussions can veer off topic
Data Emotions, opinions, and body language are captured Multiple voices make the data intricate to analyse
Efficiency Data from several participants simultaneously Real logistical effort to coordinate multiple people

The strengths and the weaknesses are the same thing — group dynamics. The method stands or falls on how well the moderator manages them.

A word on observation

Watching as well as asking

Interviews and focus groups share a limit: they capture what people say, and what people say and what they do are not the same. Observational research is the method in which the researcher observes and records behaviour and interactions in natural or controlled settings without manipulating the environment or the people in it. Its key characteristics are natural settings (workplaces, stores, meetings), a non-interventionist stance, and data that can be qualitative or quantitative. It is particularly well suited to studying processes as they unfold, rather than reconstructions after the fact. In observation as in interviewing, full and accurate notes are vital — recording both what you “know” happened and what you “think” it means.

Participant and non-participant observation

Type Character Gains Costs
Participant observation The researcher joins the group and takes part in its activities Insider’s understanding, trust and rapport, rich contextual data Long-term commitment; risk of over-identification and lost critical distance; the researcher’s presence changes behaviour
Non-participant observation The researcher watches from a distance, as unobtrusively as possible Detachment and arguably greater objectivity; natural behaviour documented Limited insight into what behaviour means to those observed; interpretation depends heavily on the observer’s skill

Either form can be structured, with specific behaviours systematically recorded, or unstructured, with a more open-ended and exploratory approach. Common tools include field notes, checklists and coding schemes, audio and video recording where consented, and documents and artefacts from the setting.

Structured observation in organisations

In organisational settings, observation is often structured: a checklist or coding scheme is used to record defined behaviours systematically. The classic application is the service interaction — was the customer greeted within a set time, was a product suggestion made, was the complaint handled by script or judgement, how long was the queue? This produces countable, comparable data about real behaviour that complements what interviews and surveys report. The core threat is reactivity: people who know they are being watched behave better, so multiple visits should be scheduled and the novelty allowed to wear off. Ethics still apply — staff should know that observation occurs and how the data will be used, even if exact times are not announced. For Meridian, falling customer-satisfaction scores could be probed by structured observation of service interactions across a sample of stores: what actually happens at the till?

Covert observation

Covert observation — observing people who do not know they are being studied, including “mystery shopper” designs — has an obvious methodological appeal: behaviour completely unaffected by being watched. Its ethical cost is equally obvious: no informed consent, deception about the researcher’s identity, and intrusion on privacy. The framework from session 4 applies with full force: covert designs need exceptional justification, minimal intrusion, strong anonymisation, and independent ethical review — not merely a manager’s sign-off. In workplaces the danger doubles, because covert research conducted by an employer on its own staff slides quickly from research into surveillance. The default position is simple: if a study cannot be done openly, ask hard questions before concluding that it should be done at all.

Conclusion

Interviews sit on a continuum from structured to unstructured, and the semi-structured guide — an opening question, a small set of key questions with planned probes, and a closing question — is the workhorse of organisational research. The technique is learnable: open framing, non-leading wording, deliberate silence, well-chosen probes, and active listening, together with the practicalities of consent, recording, transcription, location, and duration, which are part of the method rather than administrative afterthoughts. The interviewer is an instrument, and who asks whom — especially up and down an organisational hierarchy — shapes what can be said; good designs anticipate this rather than discovering it in the transcripts. Focus groups trade individual depth for the sight of opinions forming through interaction, and stand or fall on the moderator’s management of dominators, silent participants, and groupthink. Observation adds what talk cannot: evidence of what people actually do — with covert designs flagged as ethically fraught. Session 14 takes up the question this session leaves open: what to do with the transcripts and field notes these methods produce.