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| Criterion |  UX Research Card Sorting |  Operations Fishbone Diagram |  UX Research First-click Testing |  Operations Failure Mode and Effects Analysis |
|---|---|---|---|---|
Purposedifferent | When content only makes sense internally and users can't find the structure again, card sorting exposes their mental order. Terms, groups, and naming are then aligned with the target group's expectations. | 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. | 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. |
Complexitydifferent | Low | Low | Low | High |
Timedifferent | 20-45 min | 30-60 min | 1-2 Tage | 2-6 h |
Participantsdifferent | Based on research question | 2-8 | 10-30 | 3-10 |
Formatdifferent | Workshop + async | Workshop | Async | Workshop |
Outputdifferent | Content groups, Label set, IA hypotheses | Fishbone Diagram, Cause Categories, Investigation Backlog | Click Heatmap, Success Rate, Design Recommendations | FMEA Table, Risk Priority, Mitigation Actions |
Tagsno overlap | Information architectureNavigationStructure | Root causeQualityOperations | UXNavigationFindabilityValidation | RiskQualityOperationsRoot cause |