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| Criterion |  UX Research Usability Testing |  UX Research Card Sorting |  Product Discovery Problem Interview |  UX Research First-click Testing |
|---|---|---|---|---|
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 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 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. | 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. |
Complexitydifferent | Medium | Low | Medium | Low |
Timedifferent | 1-2 h je Session | 20-45 min | 30-60 min je Interview | 1-2 Tage |
Participantsdifferent | Based on research question | Based on research question | 5-12 Interviews | 10-30 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Async |
Outputdifferent | Usability Issues, Severity List, Recommendations | Content groups, Label set, IA hypotheses | Problem Evidence, Risk Notes, Customer Segments | Click Heatmap, Success Rate, Design Recommendations |
Tagsno overlap | ValidationUXPrototype | Information architectureNavigationStructure | DiscoveryInterviewsValidation | UXNavigationFindabilityValidation |