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| Criterion |  Product Discovery Solution Interview |  UX Research First-click Testing |  Decision Making Assumption Surfacing |  UX Research Usability Testing |
|---|---|---|---|---|
Purposedifferent | 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 users immediately turn the wrong way on a screen or wireframe, first click testing checks initial orientation at high speed. The first click shows early whether expectation, labeling, and wayfinding fit together. | Plans often contain assumptions that were never openly stated and remain dangerous precisely because of that. Assumption Surfacing makes these silent premises visible and prioritizes which of them carry the initiative or could sink it. | 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 | Medium | Low | Low | Medium |
Timedifferent | 30-60 min je Interview | 1-2 Tage | 45-90 min | 1-2 h je Session |
Participantsdifferent | 5-10 Interviews | 10-30 | 2-8 | Based on research question |
Formatdifferent | Workshop + async | Async | Workshop + async | Workshop + async |
Outputdifferent | Solution Feedback, Objection List, Validation Notes | Click Heatmap, Success Rate, Design Recommendations | Assumption List, Critical Assumptions, Learning Plan | Usability Issues, Severity List, Recommendations |
Tagsno overlap | ValidationInterviewsPrototype | UXNavigationFindabilityValidation | AssumptionsRiskDecisionDiscovery | ValidationUXPrototype |