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| Criterion |  Product Discovery Problem Interview |  Product Discovery Solution Interview |  UX Research Card Sorting |
|---|---|---|---|
Purposedifferent | 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 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 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 | 5-12 Interviews | 5-10 Interviews | Based on research question |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Problem Evidence, Risk Notes, Customer Segments | Solution Feedback, Objection List, Validation Notes | Content groups, Label set, IA hypotheses |
Tagsno overlap | DiscoveryInterviewsValidation | ValidationInterviewsPrototype | Information architectureNavigationStructure |
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