GLOSSARY

Qualitative Research

Qualitative research explores the why behind behavior via IDIs, focus groups, ethnography, MROCs — ESOMAR and ISO 20252 aligned, saturation-based sampling.

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Quick answer
Qualitative research is a family of methods that captures depth, meaning, and context in small numbers of participants — interviews, focus groups, ethnography, diary studies, online communities. It answers why and how questions that quantitative research alone cannot reach, and is strongest when paired with quantitative follow-up and disciplined synthesis rather than cherry-picked quotes.

WHAT IT IS

Core methods include in-depth interviews (IDIs), focus groups (in-person and online), ethnographic observation, diary studies, digital MROCs, and projective techniques. Analysis uses thematic coding, framework analysis, and increasingly LLM-assisted synthesis — with human judgment still in control.

HOW IT WORKS

Qualitative research is governed by ESOMAR/ICC and ISO 20252 for study design, moderator training, participant consent, and reporting integrity. Sample size is determined by theoretical saturation, not statistical power; credibility depends on purposive sampling, reflexive interpretation, and transparent reporting.

WHEN TO USE

Commission qualitative when the task is to explore a new space, understand language, define hypotheses for quantitative testing, diagnose a customer or employee problem, or pressure-test a product or message before launch.

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Related questions.

What is qualitative research?
Qualitative research is a family of methods that captures depth, meaning, and context in small numbers of participants — interviews, focus groups, ethnography, diary studies, online communities. It answers why and how questions that quantitative research cannot answer with numbers alone.
When should qualitative come before quantitative?
Whenever the right questions are not yet known. Qualitative work surfaces the language, motivations, and constraints that will shape the quantitative instrument; running a survey before discovery leads to surveys that measure the researcher's assumptions, not the respondent's reality.
What are the common pitfalls?
Over-generalizing from small samples, confusing vividness with representativeness, cherry-picking quotes to confirm a hypothesis, and failing to triangulate with other evidence. Qualitative rigor comes from systematic sampling, transparent coding, and disciplined synthesis — not from sheer eloquence.
How many participants are enough?
For most studies, eight to twelve interviews per defined segment produces thematic saturation; twenty-plus adds diminishing returns. Focus groups usually need four to six groups per segment. Ethnography and longitudinal diaries run smaller but deeper. The right answer is: enough to reach saturation, not a fixed number.
How does NUUN Digital run qualitative?
We run moderators certified in the specific method, record and systematically code with modern tools, synthesize into shared artifacts (journey maps, personas, opportunity maps), and triangulate qualitative with panel quant. Qualitative on its own is signal; paired with quant it is evidence.

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