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| Criterion |  UX Research Surveys |  Product Discovery Problem Interview |  Product Discovery Test Card |  Product Discovery Fake Door Test |
|---|---|---|---|---|
Purposedifferent | When a topic needs to be validated broadly and many people can answer the same question, surveys gather structured feedback in a scalable form. Answers become comparable and segmentable instead of remaining merely anecdotal. | 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 Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. | 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 | 3-14 Tage | 30-60 min je Interview | 20-35 min | 1-5 Tage |
Participantsdifferent | 50+ | 5-12 Interviews | 1-5 | Nutzertraffic |
Formatdifferent | Async | Workshop + async | Workshop + async | Async |
Outputdifferent | Survey Results, Charts, Segment Insights | Problem Evidence, Risk Notes, Customer Segments | Test Card with a pre-set threshold | Click Data, Interest Signal, Learning Decision |
Tags1 shared | QuantitativeResearchValidation | DiscoveryInterviewsValidation | ExperimentsValidationDiscoveryHypothesis | ValidationExperimentsDemandDiscovery |