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| Criterion |  UX Research First-click Testing |  Operations Failure Mode and Effects Analysis |  Operations Fishbone Diagram |  Operations Fault Tree Analysis |
|---|---|---|---|---|
Purposedifferent | 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. | For a process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability. | When a problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers. | For a critical top event with several possible triggers, the method logically models failure paths. It makes visible which combinations of conditions can lead to damage. |
Complexitydifferent | Low | High | Low | High |
Timedifferent | 1-2 Tage | 2-6 h | 30-60 min | 2-6 h |
Participantsdifferent | 10-30 | 3-10 | 2-8 | 3-8 |
Formatdifferent | Async | Workshop | Workshop | Workshop + async |
Outputdifferent | Click Heatmap, Success Rate, Design Recommendations | FMEA Table, Risk Priority, Mitigation Actions | Fishbone Diagram, Cause Categories, Investigation Backlog | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions |
Tagsno overlap | UXNavigationFindabilityValidation | RiskQualityOperationsRoot cause | Root causeQualityOperations | RiskRoot causeSafety |