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| Criterion |  UX Research Diary Study |  Growth A/B Testing |  Architecture Architecture Decision Record |
|---|---|---|---|
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 two variants compete, discussions quickly decide by taste rather than effect. A/B Testing checks behavior under controlled conditions and separates real improvement from chance or expectation effects. | An ADR permanently records an architecture decision with context, trade-offs, and consequence. It creates continuity for later changes because the decision path stays traceable. |
Complexitydifferent | Medium | High | Low |
Timedifferent | 1-4 Wochen | 1-4 Wochen | 15-45 min |
Participantsdifferent | 5-20 | 1-6 | 1-3 |
Formatsame | Async | Async | Async |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Experiment results, Decision log, Learning summary | ADR File, Decision Log, Rationale |
Tagsno overlap | UX researchTrackingBehavior | ExperimentsGrowthAnalyticsValidation | ArchitectureRationaleDocumentationGovernance |
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