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| Criterion |  UX Research Usability Testing |  Innovation Design Thinking |  Product Discovery MVP Test Matrix |  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. | For complex user problems with an uncertain cause, the method connects observation, interpretation, and experiment into a learning cycle. It keeps the focus on real needs and avoids premature solution language. This produces robust decisions for product and service. | 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. | 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 | High | Medium | Medium |
Timedifferent | 1-2 h je Session | 1 Tag bis mehrere Wochen | 45-75 min | 1-5 Tage |
Participantsdifferent | Based on research question | 4-10 | 2-8 | Nutzertraffic |
Formatdifferent | Workshop + async | Workshop | Workshop | Async |
Outputdifferent | Usability Issues, Severity List, Recommendations | Problem Statement, Prototype, Test Learnings | Test Matrix, Test Plan | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | ValidationUXPrototype | InnovationPrototypeResearch | ExperimentsValidationDiscoveryOptions | ValidationExperimentsDemandDiscovery |