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| Criterion |  UX Research Diary Study |  Operations Change Analysis |  Decision Making Assumption Surfacing |  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. | For a deviation after a change, the method isolates the influence of the altered condition. It narrows down which differences are relevant and which are just accompanying noise. | Plans often contain assumptions that were never openly stated and remain dangerous precisely because of that. Assumption Surfacing makes these silent premises visible and prioritizes which of them carry the initiative or could sink it. | 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 | Medium | Low | High |
Timedifferent | 1-4 Wochen | 45-120 min | 45-90 min | 2-6 h |
Participantsdifferent | 5-20 | 2-6 | 2-8 | 3-10 |
Formatdifferent | Async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Change Matrix, Cause Hypotheses, Validation Questions, Action List | Assumption List, Critical Assumptions, Learning Plan | FMEA Table, Risk Priority, Mitigation Actions |
Tagsno overlap | UX researchTrackingBehavior | ChangeRoot causeTroubleshootingComparison | AssumptionsRiskDecisionDiscovery | RiskQualityOperationsRoot cause |