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| Criterion |  UX Research User Interviews |  UX Research Affinity Diagramming |  Operations 8D Problem Solving |  UX Research Empathy Mapping |
|---|---|---|---|---|
Purposedifferent | When teams derive needs only from assumptions and real motives are missing, user interviews give direct access to behavior and meaning. Conversations from the target group's everyday life make patterns, tensions, and open questions solidly visible. | When research notes, feedback, or observations sit unconnected side by side, affinity diagramming sorts the raw material into solid themes. Many individual points turn into patterns that make decisions and opportunities clearer. | For an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. | When a lot is assumed about a target group but little is seen jointly, empathy mapping makes knowledge and gaps directly comparable. The picture also shows which assumptions hold up and where evidence is missing. |
Complexitydifferent | Low | Low | High | Low |
Timedifferent | 30–60 min per interview | 45–90 min | 1-6 Wochen | 30–60 min |
Participantsdifferent | 1 participant per interview | 3-10 | 4-10 | 4-8 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | Interview Notes, Themes, Insight Summary | Theme clusters, Insight statements, Opportunity areas | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Empathy Map, Assumptions List, Research Gaps |
Tagsno overlap | QualitativeResearchCustomerDiscovery | SynthesisQualitativeRoot cause | QualityProblem solvingRoot cause | SynthesisQualitativeWorkshop |