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| Criterion |  UX Research User Interviews |  UX Research Card Sorting |  UX Research Affinity Diagramming |  UX Research Tree Testing |
|---|---|---|---|---|
Purposedifferent | 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 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 research notes, feedback, or observations sit unconnected side by side, affinity diagramming sorts the raw material into solid themes. Many individual points turn into patterns that make decisions and opportunities clearer. | 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. |
Complexitydifferent | Low | Low | Low | Medium |
Timedifferent | 30–60 min per interview | 20-45 min | 45–90 min | 1-2 Tage |
Participantsdifferent | 1 participant per interview | Based on research question | 3-10 | Based on research question |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Async |
Outputdifferent | Interview Notes, Themes, Insight Summary | Content groups, Label set, IA hypotheses | Theme clusters, Insight statements, Opportunity areas | Findability Metrics, Path Analysis, Revised IA |
Tagsno overlap | QualitativeResearchCustomerDiscovery | Information architectureNavigationStructure | SynthesisQualitativeRoot cause | Information architectureNavigationFindability |