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| Criterion |  UX Research Diary Study |  Growth Flywheel |  Product Discovery Fake Door Test |
|---|---|---|---|
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. | Growth often breaks down where a reinforcing mechanism builds up too much friction. A Flywheel shows the cycle of value, repetition, and reinforcement meant to sustain growth. | When demand is still unclear, it measures interest in a feature before it is built. It separates real behavior from polite agreement and deliberately keeps build effort small. |
Complexitysame | Medium | Medium | Medium |
Timedifferent | 1-4 Wochen | 60-120 min | 1-5 Tage |
Participantsdifferent | 5-20 | 3-8 | Nutzertraffic |
Formatdifferent | Async | Workshop | Async |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Flywheel Map, Friction Points, Growth Levers, Experiment Backlog | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | UX researchTrackingBehavior | GrowthRetentionConversion | ValidationExperimentsDemandDiscovery |
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