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| Criterion |  UX Research Usability Testing |  UX Research User Interviews |  Product Discovery Solution 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 teams derive needs only from assumptions and real motives are missing, user interviews give direct access to behavior and meaning. Conversations from the target group's everyday life make patterns, tensions, and open questions solidly visible. | 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. |
Complexitydifferent | Medium | Low | Medium |
Timedifferent | 1-2 h je Session | 30–60 min per interview | 30-60 min je Interview |
Participantsdifferent | Based on research question | 1 participant per interview | 5-10 Interviews |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Usability Issues, Severity List, Recommendations | Interview Notes, Themes, Insight Summary | Solution Feedback, Objection List, Validation Notes |
Tagsno overlap | ValidationUXPrototype | QualitativeResearchCustomerDiscovery | ValidationInterviewsPrototype |
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