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