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| Criterion |  UX Research Usability Testing |  Product Discovery Solution Interview |  Product Discovery Learning Card |  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. | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. | 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 | Low | Medium |
Timedifferent | 1-2 h je Session | 30-60 min je Interview | 25-40 min | 30-60 min je Interview |
Participantsdifferent | Based on research question | 5-10 Interviews | 1-5 | 5-12 Interviews |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Usability Issues, Severity List, Recommendations | Solution Feedback, Objection List, Validation Notes | Learning Card with evidence and next action | Problem Evidence, Risk Notes, Customer Segments |
Tags1 shared | ValidationUXPrototype | ValidationInterviewsPrototype | ExperimentsValidationDiscoveryLearning | DiscoveryInterviewsValidation |