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| Criterion |  Product Discovery Solution Interview |  UX Research Empathy Mapping |  UX Research Affinity Diagramming |  UX Research Usability Testing |
|---|---|---|---|---|
Purposedifferent | 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. | When a lot is assumed about a target group but little is seen jointly, empathy mapping makes knowledge and gaps directly comparable. The picture also shows which assumptions hold up and where evidence is missing. | 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 | Medium | Low | Low | Medium |
Timedifferent | 30-60 min je Interview | 30–60 min | 45–90 min | 1-2 h je Session |
Participantsdifferent | 5-10 Interviews | 4-8 | 3-10 | Based on research question |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop + async |
Outputdifferent | Solution Feedback, Objection List, Validation Notes | Empathy Map, Assumptions List, Research Gaps | Theme clusters, Insight statements, Opportunity areas | Usability Issues, Severity List, Recommendations |
Tagsno overlap | ValidationInterviewsPrototype | SynthesisQualitativeWorkshop | SynthesisQualitativeRoot cause | ValidationUXPrototype |