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| Criterion |  UX Research Tree Testing |  Product Discovery Solution Interview |  UX Research Card Sorting |  Product Discovery Problem Interview |
|---|---|---|---|---|
Purposedifferent | When a navigation exists but search paths still fail, tree testing checks findability without visual distraction. The method shows whether labels, levels, and paths really lead to the intended destination. | 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 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 Tage | 30-60 min je Interview | 20-45 min | 30-60 min je Interview |
Participantsdifferent | Based on research question | 5-10 Interviews | Based on research question | 5-12 Interviews |
Formatdifferent | Async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Findability Metrics, Path Analysis, Revised IA | Solution Feedback, Objection List, Validation Notes | Content groups, Label set, IA hypotheses | Problem Evidence, Risk Notes, Customer Segments |
Tagsno overlap | Information architectureNavigationFindability | ValidationInterviewsPrototype | Information architectureNavigationStructure | DiscoveryInterviewsValidation |