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| Criterion |  Product Discovery Solution Interview |  UX Research Card Sorting |  Product Discovery Fake Door Test |  Product Discovery Learning Card |
|---|---|---|---|---|
Purposedifferent | When a solution idea is already on the table, it checks how it is understood and evaluated. It looks for resonance, objections, and missing fit early in the conversation. | When content only makes sense internally and users can't find the structure again, card sorting exposes their mental order. Terms, groups, and naming are then aligned with the target group's expectations. | 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. | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. |
Complexitydifferent | Medium | Low | Medium | Low |
Timedifferent | 30-60 min je Interview | 20-45 min | 1-5 Tage | 25-40 min |
Participantsdifferent | 5-10 Interviews | Based on research question | Nutzertraffic | 1-5 |
Formatdifferent | Workshop + async | Workshop + async | Async | Workshop + async |
Outputdifferent | Solution Feedback, Objection List, Validation Notes | Content groups, Label set, IA hypotheses | Click Data, Interest Signal, Learning Decision | Learning Card with evidence and next action |
Tagsno overlap | ValidationInterviewsPrototype | Information architectureNavigationStructure | ValidationExperimentsDemandDiscovery | ExperimentsValidationDiscoveryLearning |