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| Criterion |  UX Research Usability Testing |  Product Discovery Solution Interview |  UX Research Empathy Mapping |  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 lot is assumed about a target group but little is seen jointly, empathy mapping makes knowledge and gaps directly comparable. The picture also shows which assumptions hold up and where evidence is missing. | 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 | 30–60 min | 30-60 min je Interview |
Participantsdifferent | Based on research question | 5-10 Interviews | 4-8 | 5-12 Interviews |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Usability Issues, Severity List, Recommendations | Solution Feedback, Objection List, Validation Notes | Empathy Map, Assumptions List, Research Gaps | Problem Evidence, Risk Notes, Customer Segments |
Tagsno overlap | ValidationUXPrototype | ValidationInterviewsPrototype | SynthesisQualitativeWorkshop | DiscoveryInterviewsValidation |