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| Criterion |  UX Research Diary Study |  Operations Kepner-Tregoe |  Decision Making Decision Rights Mapping |  Operations 5 Whys |
|---|---|---|---|---|
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 disturbance that's hard to pin down, the method cleanly separates problem, cause, and decision. It reduces mixing when symptoms allow several interpretations. | In organizations with many stakeholders, it often blurs who actually decides and who is merely consulted. It separates options, evaluation criteria, and open risks. The result is captured as a Decision Rights matrix and an agreement. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. |
Complexitydifferent | Medium | High | Medium | Low |
Timedifferent | 1-4 Wochen | 2-8 h | 90-180 min | 15-30 min |
Participantsdifferent | 5-20 | 2-8 | 4-12 | 2-6 |
Formatdifferent | Async | Workshop + async | Workshop | Workshop |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Problem Analysis, Decision Analysis, Risk Plan | Decision Rights Matrix, Agreement | Root cause notes, Countermeasures |
Tagsno overlap | UX researchTrackingBehavior | Problem solvingRoot causeDecisionOperations | DecisionGovernanceAlignmentResponsibility | Root causeIncidentLeanProblem solving |