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| Criterion |  UX Research Usability Testing |  Product Discovery Solution Interview |  Product Discovery Wizard of Oz Test |  Product Discovery Problem Interview |
|---|---|---|---|---|
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 a solution idea is already on the table, it checks how it is understood and evaluated. It looks for resonance, objections, and missing fit early in the conversation. | When a new experience would still be too expensive to automate for real, it simulates the outcome behind the scenes. It checks user reaction and value before the technology disappears. | 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. |
Complexitydifferent | Medium | Medium | High | Medium |
Timedifferent | 1-2 h je Session | 30-60 min je Interview | 2-10 Tage | 30-60 min je Interview |
Participantsdifferent | Based on research question | 5-10 Interviews | 5-20 Nutzer | 5-12 Interviews |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Usability Issues, Severity List, Recommendations | Solution Feedback, Objection List, Validation Notes | Prototype Learnings, Manual Effort Notes, Risk List | Problem Evidence, Risk Notes, Customer Segments |
Tags1 shared | ValidationUXPrototype | ValidationInterviewsPrototype | PrototypeValidationMVP | DiscoveryInterviewsValidation |