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| Criterion |  UX Research Usability Testing |  UX Research Card Sorting |  Product Discovery Fake Door Test |
|---|---|---|---|
Purposedifferent | When a product is built but people get stuck on tasks, usability testing shows the friction at concrete points. Observed use instead of self-report makes visible where orientation, understanding, or interaction breaks down. | 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. |
Complexitydifferent | Medium | Low | Medium |
Timedifferent | 1-2 h je Session | 20-45 min | 1-5 Tage |
Participantsdifferent | Based on research question | Based on research question | Nutzertraffic |
Formatdifferent | Workshop + async | Workshop + async | Async |
Outputdifferent | Usability Issues, Severity List, Recommendations | Content groups, Label set, IA hypotheses | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | ValidationUXPrototype | Information architectureNavigationStructure | ValidationExperimentsDemandDiscovery |
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