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| Criterion |  Operations 8D Problem Solving |  UX Research Empathy Mapping |  UX Research User Interviews |
|---|---|---|---|
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 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. | 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. |
Complexitydifferent | High | Low | Low |
Timedifferent | 1-6 Wochen | 30–60 min | 30–60 min per interview |
Participantsdifferent | 4-10 | 4-8 | 1 participant per interview |
Formatdifferent | Workshop + async | Workshop | Workshop + async |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Empathy Map, Assumptions List, Research Gaps | Interview Notes, Themes, Insight Summary |
Tagsno overlap | QualityProblem solvingRoot cause | SynthesisQualitativeWorkshop | QualitativeResearchCustomerDiscovery |
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