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| Criterion |  Product Discovery Problem Interview |  UX Research Card Sorting |  Product Discovery Solution Interview |  Product Discovery Experiment Canvas |
|---|---|---|---|---|
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 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. | When experiments become unreadable after the fact, it arranges hypothesis, signal, and learning goal on a single canvas. It separates problem, assumption, solution, and evidence. The result is captured as a Completed Experiment Canvas and a Success Metric. |
Complexitydifferent | Medium | Low | Medium | Low |
Timedifferent | 30-60 min je Interview | 20-45 min | 30-60 min je Interview | 30-60 min |
Participantsdifferent | 5-12 Interviews | Based on research question | 5-10 Interviews | 1-5 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Problem Evidence, Risk Notes, Customer Segments | Content groups, Label set, IA hypotheses | Solution Feedback, Objection List, Validation Notes | Completed Experiment Canvas, Success Metric |
Tagsno overlap | DiscoveryInterviewsValidation | Information architectureNavigationStructure | ValidationInterviewsPrototype | ExperimentsValidationDiscoveryHypothesis |