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| Criterion |  Decision Making DACI |  UX Research User Interviews |  UX Research Affinity Diagramming |
|---|---|---|---|
Purposedifferent | In cross-functional decisions, responsibilities quickly blur between approval, influence, and execution. DACI arranges these roles so decision pressure, contribution, and information stay cleanly separated. | 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 research notes, feedback, or observations sit unconnected side by side, affinity diagramming sorts the raw material into solid themes. Many individual points turn into patterns that make decisions and opportunities clearer. |
Complexitysame | Low | Low | Low |
Timedifferent | 30-60 min | 30–60 min per interview | 45–90 min |
Participantsdifferent | 2-10 | 1 participant per interview | 3-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop |
Outputdifferent | DACI Matrix, Decision Owner, Decision Log | Interview Notes, Themes, Insight Summary | Theme clusters, Insight statements, Opportunity areas |
Tagsno overlap | DecisionRolesGovernanceAlignment | QualitativeResearchCustomerDiscovery | SynthesisQualitativeRoot cause |
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