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| Criterion |  UX Research Empathy Mapping |  UX Research Card Sorting |  Operations 8D Problem Solving |
|---|---|---|---|
Purposedifferent | 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 content only makes sense internally and users can't find the structure again, card sorting exposes their mental order. Terms, groups, and naming are then aligned with the target group's expectations. | 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. |
Complexitydifferent | Low | Low | High |
Timedifferent | 30–60 min | 20-45 min | 1-6 Wochen |
Participantsdifferent | 4-8 | Based on research question | 4-10 |
Formatdifferent | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Empathy Map, Assumptions List, Research Gaps | Content groups, Label set, IA hypotheses | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | SynthesisQualitativeWorkshop | Information architectureNavigationStructure | QualityProblem solvingRoot cause |
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