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| Criterion |  UX Research User Interviews |  Product Discovery Fake Door Test |  UX Research First-click Testing |  Product Discovery MVP Test Matrix |
|---|---|---|---|---|
Purposedifferent | When teams derive needs only from assumptions and real motives are missing, user interviews give direct access to behavior and meaning. Conversations from the target group's everyday life make patterns, tensions, and open questions solidly 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. | When users immediately turn the wrong way on a screen or wireframe, first click testing checks initial orientation at high speed. The first click shows early whether expectation, labeling, and wayfinding fit together. | When several minimal variants compete to answer the same question, it makes comparing and choosing between them cleaner. It separates problem, assumption, solution, and evidence. The result is captured as a Test Matrix and a Test Plan. |
Complexitydifferent | Low | Medium | Low | Medium |
Timedifferent | 30–60 min per interview | 1-5 Tage | 1-2 Tage | 45-75 min |
Participantsdifferent | 1 participant per interview | Nutzertraffic | 10-30 | 2-8 |
Formatdifferent | Workshop + async | Async | Async | Workshop |
Outputdifferent | Interview Notes, Themes, Insight Summary | Click Data, Interest Signal, Learning Decision | Click Heatmap, Success Rate, Design Recommendations | Test Matrix, Test Plan |
Tagsno overlap | QualitativeResearchCustomerDiscovery | ValidationExperimentsDemandDiscovery | UXNavigationFindabilityValidation | ExperimentsValidationDiscoveryOptions |