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| Criterion |  UX Research Diary Study |  Operations Failure Mode and Effects Analysis |  Operations MORT Analysis |  Operations Fishbone Diagram |
|---|---|---|---|---|
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. | 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. | For a safety-relevant event or a system with high protection requirements, the method examines where controls failed. It exposes both technical and organizational gaps. | 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. |
Complexitydifferent | Medium | High | High | Low |
Timedifferent | 1-4 Wochen | 2-6 h | Mehrere Tage bis Wochen | 30-60 min |
Participantsdifferent | 5-20 | 3-10 | 2-6 | 2-8 |
Formatdifferent | Async | Workshop | Workshop + async | Workshop |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | FMEA Table, Risk Priority, Mitigation Actions | MORT Worksheets, Findings per Branch, Corrective Actions, Systemic Recommendations | Fishbone Diagram, Cause Categories, Investigation Backlog |
Tagsno overlap | UX researchTrackingBehavior | RiskQualityOperationsRoot cause | Root causeSafetySystemicIncident | Root causeQualityOperations |