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| Criterion |  UX Research Affinity Diagramming |  UX Research Tree Testing |  Operations Kepner-Tregoe |  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. | When a navigation exists but search paths still fail, tree testing checks findability without visual distraction. The method shows whether labels, levels, and paths really lead to the intended destination. | For a disturbance that's hard to pin down, the method cleanly separates problem, cause, and decision. It reduces mixing when symptoms allow several interpretations. | 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 | High | High |
Timedifferent | 45–90 min | 1-2 Tage | 2-8 h | 1-6 Wochen |
Participantsdifferent | 3-10 | Based on research question | 2-8 | 4-10 |
Formatdifferent | Workshop | Async | Workshop + async | Workshop + async |
Outputdifferent | Theme clusters, Insight statements, Opportunity areas | Findability Metrics, Path Analysis, Revised IA | Problem Analysis, Decision Analysis, Risk Plan | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | SynthesisQualitativeRoot cause | Information architectureNavigationFindability | Problem solvingRoot causeDecisionOperations | QualityProblem solvingRoot cause |