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| Criterion |  Operations 8D Problem Solving |  UX Research Personas |  UX Research Affinity Diagramming |  UX Research Empathy Mapping |
|---|---|---|---|---|
Purposedifferent | 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 target groups stay too vague and teams talk about the same people differently, personas create a shared, solid picture of usage. Condensed profiles make needs, contexts, and differences tangible enough for decisions. | 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. | 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 | High | Medium | Low | Low |
Timedifferent | 1-6 Wochen | 1-3 Tage | 45–90 min | 30–60 min |
Participantsdifferent | 4-10 | Internes Team | 3-10 | 4-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Persona Profiles, Needs Summary, Scenario Notes | Theme clusters, Insight statements, Opportunity areas | Empathy Map, Assumptions List, Research Gaps |
Tagsno overlap | QualityProblem solvingRoot cause | ResearchCustomerSynthesis | SynthesisQualitativeRoot cause | SynthesisQualitativeWorkshop |