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| Criterion |  UX Research Card Sorting |  Product Discovery MVP Test Matrix |  Product Discovery Problem Interview |  Product Discovery Learning 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 several minimal variants compete to answer the same question, it makes comparing and choosing between them cleaner. It separates problem, assumption, solution, and evidence. The result is captured as a Test Matrix and a Test Plan. | 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. | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. |
Complexitydifferent | Low | Medium | Medium | Low |
Timedifferent | 20-45 min | 45-75 min | 30-60 min je Interview | 25-40 min |
Participantsdifferent | Based on research question | 2-8 | 5-12 Interviews | 1-5 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Content groups, Label set, IA hypotheses | Test Matrix, Test Plan | Problem Evidence, Risk Notes, Customer Segments | Learning Card with evidence and next action |
Tagsno overlap | Information architectureNavigationStructure | ExperimentsValidationDiscoveryOptions | DiscoveryInterviewsValidation | ExperimentsValidationDiscoveryLearning |