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| Criterion |  UX Research Tree Testing |  Product Discovery Problem Interview |  Product Discovery Learning Card |  Product Discovery Fake Door Test |
|---|---|---|---|---|
Purposedifferent | When a navigation exists but search paths still fail, tree testing checks findability without visual distraction. The method shows whether labels, levels, and paths really lead to the intended destination. | When the picture of the problem still needs to become solid, it asks about real situations and consequences. It separates genuine suffering from mere interest in a solution. | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. | 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 | Medium | Low | Medium |
Timedifferent | 1-2 Tage | 30-60 min je Interview | 25-40 min | 1-5 Tage |
Participantsdifferent | Based on research question | 5-12 Interviews | 1-5 | Nutzertraffic |
Formatdifferent | Async | Workshop + async | Workshop + async | Async |
Outputdifferent | Findability Metrics, Path Analysis, Revised IA | Problem Evidence, Risk Notes, Customer Segments | Learning Card with evidence and next action | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | Information architectureNavigationFindability | DiscoveryInterviewsValidation | ExperimentsValidationDiscoveryLearning | ValidationExperimentsDemandDiscovery |