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| Criterion |  UX Research Usability Testing |  UX Research Card Sorting |  Product Discovery Test Card |
|---|---|---|---|
Purposedifferent | 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 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. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. |
Complexitydifferent | Medium | Low | Low |
Timedifferent | 1-2 h je Session | 20-45 min | 20-35 min |
Participantsdifferent | Based on research question | Based on research question | 1-5 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Usability Issues, Severity List, Recommendations | Content groups, Label set, IA hypotheses | Test Card with a pre-set threshold |
Tagsno overlap | ValidationUXPrototype | Information architectureNavigationStructure | ExperimentsValidationDiscoveryHypothesis |
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