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| Criterion |  UX Research Usability Testing |  Product Strategy DIBB |  Product Discovery Test Card |  Decision Making Assumption Surfacing |
|---|---|---|---|---|
Purposedifferent | When a product is built but people get stuck on tasks, usability testing shows the friction at concrete points. Observed use instead of self-report makes visible where orientation, understanding, or interaction breaks down. | DIBB helps clarify target groups, value, goals, and priorities by making the logic behind a decision explicit. It captures results as a DIBB document, belief list, bet list, and learning report. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. | Plans often contain assumptions that were never openly stated and remain dangerous precisely because of that. Assumption Surfacing makes these silent premises visible and prioritizes which of them carry the initiative or could sink it. |
Complexitydifferent | Medium | Low | Low | Low |
Timedifferent | 1-2 h je Session | 1-2 h | 20-35 min | 45-90 min |
Participantsdifferent | Based on research question | 2-8 | 1-5 | 2-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Usability Issues, Severity List, Recommendations | DIBB document, Belief list, Bet list, Learning report | Test Card with a pre-set threshold | Assumption List, Critical Assumptions, Learning Plan |
Tagsno overlap | ValidationUXPrototype | StrategyDecisionAssumptionsHypothesis | ExperimentsValidationDiscoveryHypothesis | AssumptionsRiskDecisionDiscovery |