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| Criterion |  Decision Making Decision Tree |  UX Research User Interviews |  Product Discovery Assumption Mapping |
|---|---|---|---|
Purposedifferent | For decisions with follow-on paths and dependencies, a linear comparison is often not enough. A Decision Tree shows how options branch under conditions and which consequences hang on each branch. | When teams derive needs only from assumptions and real motives are missing, user interviews give direct access to behavior and meaning. Conversations from the target group's everyday life make patterns, tensions, and open questions solidly visible. | When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. |
Complexitydifferent | Medium | Low | Medium |
Timedifferent | 30-90 min | 30–60 min per interview | 45-60 min |
Participantsdifferent | 1-6 | 1 participant per interview | 2-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Decision Tree, Option Map, Assumption List | Interview Notes, Themes, Insight Summary | Assumption map, Test backlog, Risk ranking |
Tagsno overlap | DecisionTreeOptions | QualitativeResearchCustomerDiscovery | AssumptionsRiskExperimentsValidation |
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