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| Criterion |  Product Discovery Problem Interview |  UX Research Usability Testing |  Innovation Design Thinking |
|---|---|---|---|
Purposedifferent | 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. | 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. |
Complexitydifferent | Medium | Medium | High |
Timedifferent | 30-60 min je Interview | 1-2 h je Session | 1 Tag bis mehrere Wochen |
Participantsdifferent | 5-12 Interviews | Based on research question | 4-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Problem Evidence, Risk Notes, Customer Segments | Usability Issues, Severity List, Recommendations | Problem Statement, Prototype, Test Learnings |
Tagsno overlap | DiscoveryInterviewsValidation | ValidationUXPrototype | InnovationPrototypeResearch |
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