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| Criterion |  UX Research Card Sorting |  UX Research Tree Testing |  UX Research User Interviews |  Product Discovery Opportunity Interview |
|---|---|---|---|---|
Purposedifferent | 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 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 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 opportunities are still hidden behind signals of need, it structures conversations around needs and obstacles. It looks for patterns that lead to new product opportunities. |
Complexitydifferent | Low | Medium | Low | Medium |
Timedifferent | 20-45 min | 1-2 Tage | 30–60 min per interview | 30-60 min je Interview |
Participantsdifferent | Based on research question | Based on research question | 1 participant per interview | 5-12 Interviews |
Formatdifferent | Workshop + async | Async | Workshop + async | Workshop + async |
Outputdifferent | Content groups, Label set, IA hypotheses | Findability Metrics, Path Analysis, Revised IA | Interview Notes, Themes, Insight Summary | Interview Notes, Opportunity Themes, Customer Quotes |
Tagsno overlap | Information architectureNavigationStructure | Information architectureNavigationFindability | QualitativeResearchCustomerDiscovery | DiscoveryInterviewsOpportunityCustomer |