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| Criterion |  Operations 8D Problem Solving |  UX Research Empathy Mapping |  Operations Root Cause Analysis |  UX Research Affinity Diagramming |
|---|---|---|---|---|
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 a problem keeps recurring and the cause stays unclear, the method exposes the underlying mechanism. It separates symptom, guess, and robust explanation from one another. | 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. |
Complexitydifferent | High | Low | Medium | Low |
Timedifferent | 1-6 Wochen | 30–60 min | 1-4 h | 45–90 min |
Participantsdifferent | 4-10 | 4-8 | 3-8 | 3-10 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Empathy Map, Assumptions List, Research Gaps | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan | Theme clusters, Insight statements, Opportunity areas |
Tagsno overlap | QualityProblem solvingRoot cause | SynthesisQualitativeWorkshop | Root causeProblem solvingQualityIncident | SynthesisQualitativeRoot cause |