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| Criterion |  Product Discovery Solution Interview |  UX Research Card Sorting |  UX Research First-click Testing |  Product Discovery Problem Interview |
|---|---|---|---|---|
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 content only makes sense internally and users can't find the structure again, card sorting exposes their mental order. Terms, groups, and naming are then aligned with the target group's expectations. | 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. | 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 | Low | Low | Medium |
Timedifferent | 30-60 min je Interview | 20-45 min | 1-2 Tage | 30-60 min je Interview |
Participantsdifferent | 5-10 Interviews | Based on research question | 10-30 | 5-12 Interviews |
Formatdifferent | Workshop + async | Workshop + async | Async | Workshop + async |
Outputdifferent | Solution Feedback, Objection List, Validation Notes | Content groups, Label set, IA hypotheses | Click Heatmap, Success Rate, Design Recommendations | Problem Evidence, Risk Notes, Customer Segments |
Tagsno overlap | ValidationInterviewsPrototype | Information architectureNavigationStructure | UXNavigationFindabilityValidation | DiscoveryInterviewsValidation |