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| Criterion |  UX Research Affinity Diagramming |  UX Research Card Sorting |  UX Research Usability Testing |  Product Discovery Solution Interview |
|---|---|---|---|---|
Purposedifferent | 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 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 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 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. |
Complexitydifferent | Low | Low | Medium | Medium |
Timedifferent | 45–90 min | 20-45 min | 1-2 h je Session | 30-60 min je Interview |
Participantsdifferent | 3-10 | Based on research question | Based on research question | 5-10 Interviews |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Theme clusters, Insight statements, Opportunity areas | Content groups, Label set, IA hypotheses | Usability Issues, Severity List, Recommendations | Solution Feedback, Objection List, Validation Notes |
Tagsno overlap | SynthesisQualitativeRoot cause | Information architectureNavigationStructure | ValidationUXPrototype | ValidationInterviewsPrototype |