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| Criterion |  Product Discovery Solution Interview |  Product Discovery Problem Interview |  UX Research Card Sorting |
|---|---|---|---|
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 the picture of the problem still needs to become solid, it asks about real situations and consequences. It separates genuine suffering from mere interest in a solution. | 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. |
Complexitydifferent | Medium | Medium | Low |
Timedifferent | 30-60 min je Interview | 30-60 min je Interview | 20-45 min |
Participantsdifferent | 5-10 Interviews | 5-12 Interviews | Based on research question |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Solution Feedback, Objection List, Validation Notes | Problem Evidence, Risk Notes, Customer Segments | Content groups, Label set, IA hypotheses |
Tagsno overlap | ValidationInterviewsPrototype | DiscoveryInterviewsValidation | Information architectureNavigationStructure |
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