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| Criterion |  UX Research Card Sorting |  Product Discovery Assumption Mapping |  Decision Making Pre-Mortem |
|---|---|---|---|
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 assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. | In early initiatives with many uncertainties, planning quickly turns too optimistic. A pre-mortem makes the expected failure visible in advance and sharpens the view of causes, gaps, and countermeasures. |
Complexitydifferent | Low | Medium | Low |
Timedifferent | 20-45 min | 45-60 min | 20–45 min |
Participantsdifferent | Based on research question | 2-8 | Small cross-functional group |
Formatdifferent | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Content groups, Label set, IA hypotheses | Assumption map, Test backlog, Risk ranking | Risk list, Mitigation plan, Assumption log |
Tagsno overlap | Information architectureNavigationStructure | AssumptionsRiskExperimentsValidation | RiskDecisionFailurePlanning |
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