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| Criterion |  Operations Change Analysis |  UX Research Usability Testing |  UX Research Card Sorting |  Product Discovery Solution Interview |
|---|---|---|---|---|
Purposedifferent | For a deviation after a change, the method isolates the influence of the altered condition. It narrows down which differences are relevant and which are just accompanying noise. | 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. | 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 | Medium | Medium | Low | Medium |
Timedifferent | 45-120 min | 1-2 h je Session | 20-45 min | 30-60 min je Interview |
Participantsdifferent | 2-6 | Based on research question | Based on research question | 5-10 Interviews |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Change Matrix, Cause Hypotheses, Validation Questions, Action List | Usability Issues, Severity List, Recommendations | Content groups, Label set, IA hypotheses | Solution Feedback, Objection List, Validation Notes |
Tagsno overlap | ChangeRoot causeTroubleshootingComparison | ValidationUXPrototype | Information architectureNavigationStructure | ValidationInterviewsPrototype |