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| Criterion |  UX Research Affinity Diagramming |  UX Research First-click Testing |  Operations Root Cause Analysis |  Operations 5 Whys |
|---|---|---|---|---|
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 users immediately turn the wrong way on a screen or wireframe, first click testing checks initial orientation at high speed. The first click shows early whether expectation, labeling, and wayfinding fit together. | 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. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. |
Complexitydifferent | Low | Low | Medium | Low |
Timedifferent | 45–90 min | 1-2 Tage | 1-4 h | 15-30 min |
Participantsdifferent | 3-10 | 10-30 | 3-8 | 2-6 |
Formatdifferent | Workshop | Async | Workshop + async | Workshop |
Outputdifferent | Theme clusters, Insight statements, Opportunity areas | Click Heatmap, Success Rate, Design Recommendations | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan | Root cause notes, Countermeasures |
Tagsno overlap | SynthesisQualitativeRoot cause | UXNavigationFindabilityValidation | Root causeProblem solvingQualityIncident | Root causeIncidentLeanProblem solving |