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| Criterion |  UX Research Diary Study |  Operations RACI Matrix |  Operations Failure Mode and Effects Analysis |  Decision Making DACI |
|---|---|---|---|---|
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. | With unclear responsibilities across several roles or areas, the method creates unambiguous accountability logic. It reduces friction because decision, execution, contribution, and information become separately visible. | 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. | In cross-functional decisions, responsibilities quickly blur between approval, influence, and execution. DACI arranges these roles so decision pressure, contribution, and information stay cleanly separated. |
Complexitydifferent | Medium | Low | High | Low |
Timedifferent | 1-4 Wochen | 45-90 min | 2-6 h | 30-60 min |
Participantsdifferent | 5-20 | 2-8 | 3-10 | 2-10 |
Formatdifferent | Async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | RACI Matrix, Responsibility Map, Decision Notes | FMEA Table, Risk Priority, Mitigation Actions | DACI Matrix, Decision Owner, Decision Log |
Tagsno overlap | UX researchTrackingBehavior | RolesResponsibilityGovernanceOperations | RiskQualityOperationsRoot cause | DecisionRolesGovernanceAlignment |