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| Criterion |  UX Research Personas |  Decision Making Decision Tree |  Decision Making Assumption Surfacing |  UX Research User Interviews |
|---|---|---|---|---|
Purposedifferent | When target groups stay too vague and teams talk about the same people differently, personas create a shared, solid picture of usage. Condensed profiles make needs, contexts, and differences tangible enough for decisions. | 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. | 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. | 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. |
Complexitydifferent | Medium | Medium | Low | Low |
Timedifferent | 1-3 Tage | 30-90 min | 45-90 min | 30–60 min per interview |
Participantsdifferent | Internes Team | 1-6 | 2-8 | 1 participant per interview |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Persona Profiles, Needs Summary, Scenario Notes | Decision Tree, Option Map, Assumption List | Assumption List, Critical Assumptions, Learning Plan | Interview Notes, Themes, Insight Summary |
Tagsno overlap | ResearchCustomerSynthesis | DecisionTreeOptions | AssumptionsRiskDecisionDiscovery | QualitativeResearchCustomerDiscovery |