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| Criterion | ![]() UX Research Diary Study | ![]() Product Discovery Learning Card | ![]() Growth Growth Experiment | ![]() 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. | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. | When growth ideas surface quickly, the temptation to build immediately instead of learning is high. A Growth Experiment frames an assumption so target group, lever, and measurement are clear before the first deployment. | 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. |
Complexitydifferent | Medium | Low | Medium | Medium |
Timedifferent | 1-4 Wochen | 25-40 min | 1-2 Wochen | 1-5 Tage |
Participantsdifferent | 5-20 | 1-5 | 1-6 | Nutzertraffic |
Formatdifferent | Async | Workshop + async | Workshop + async | Async |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Learning Card with evidence and next action | Experiment card, Result summary, Next bet | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | UX researchTrackingBehavior | ExperimentsValidationDiscoveryLearning | MarketingGrowthExperimentsLearning | ValidationExperimentsDemandDiscovery |



