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| Criterion |  UX Research Affinity Diagramming |  Operations A3 Problem Solving |  Decision Making Trade-off Analysis |  Operations 8D Problem Solving |
|---|---|---|---|---|
Purposedifferent | 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 a complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together. | With limited resources, quality, speed, cost, and risk almost always compete with each other. Trade-off Analysis makes these tensions explicit and prevents decisions from producing hidden side effects. | 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 | Medium | Medium | High |
Timedifferent | 45–90 min | 45-90 min | 45-120 min | 1-6 Wochen |
Participantsdifferent | 3-10 | 2-5 | 2-8 | 4-10 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Theme clusters, Insight statements, Opportunity areas | A3 Report, Action Plan, Root Cause Analysis | Trade-off Matrix, Criteria List, Decision Rationale, Accepted Downsides | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | SynthesisQualitativeRoot cause | LeanProblem solvingCoachingOperations | TradeoffsDecisionCriteriaOptions | QualityProblem solvingRoot cause |