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