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| Criterion |  UX Research Diary Study |  Operations Fishbone Diagram |  Product Strategy Impact Mapping |  Operations Failure Mode and Effects Analysis |
|---|---|---|---|---|
Purposedifferent | When experiences build up over days or weeks and a single session cannot capture them, Diary Study records the course of everyday life. Recurring triggers, moods, and habits become visible this way, beyond the sharpness of memory. | 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 a goal needs to be connected to several possible paths, it shows chains of impact instead of feature lists. It connects business goal, behavior change, and measures. | 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 | Medium | Low | Medium | High |
Timedifferent | 1-4 Wochen | 30-60 min | 45-90 min | 2-6 h |
Participantsdifferent | 5-20 | 2-8 | 3-8 | 3-10 |
Formatdifferent | Async | Workshop | Workshop | Workshop |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Fishbone Diagram, Cause Categories, Investigation Backlog | Impact Map, Outcome Hypotheses, Delivery Options | FMEA Table, Risk Priority, Mitigation Actions |
Tagsno overlap | UX researchTrackingBehavior | Root causeQualityOperations | OutcomesStrategyBehaviorPlanning | RiskQualityOperationsRoot cause |