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| Criterion |  UX Research User Interviews |  Decision Making Decision Tree |  Product Discovery Test Card |
|---|---|---|---|
Purposedifferent | 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. | 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. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. |
Complexitydifferent | Low | Medium | Low |
Timedifferent | 30–60 min per interview | 30-90 min | 20-35 min |
Participantsdifferent | 1 participant per interview | 1-6 | 1-5 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Interview Notes, Themes, Insight Summary | Decision Tree, Option Map, Assumption List | Test Card with a pre-set threshold |
Tagsno overlap | QualitativeResearchCustomerDiscovery | DecisionTreeOptions | ExperimentsValidationDiscoveryHypothesis |
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