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| Criterion |  UX Research Card Sorting |  Product Discovery Problem Interview |  Product Discovery Hypothesis Prioritization Canvas |  Product Discovery Test Card |
|---|---|---|---|---|
Purposedifferent | 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 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 many hypotheses compete for attention, it brings order to their learning sequence and importance. It separates problem, assumption, solution, and evidence. The result is captured as a prioritization canvas and a hypothesis backlog. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. |
Complexitydifferent | Low | Medium | Medium | Low |
Timedifferent | 20-45 min | 30-60 min je Interview | 60-90 min | 20-35 min |
Participantsdifferent | Based on research question | 5-12 Interviews | 3-8 | 1-5 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Content groups, Label set, IA hypotheses | Problem Evidence, Risk Notes, Customer Segments | Prioritization Canvas, Hypothesis Backlog | Test Card with a pre-set threshold |
Tagsno overlap | Information architectureNavigationStructure | DiscoveryInterviewsValidation | ExperimentsPrioritizationDiscoveryHypothesis | ExperimentsValidationDiscoveryHypothesis |