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| Criterion |  UX Research Personas |  Operations Root Cause Analysis |  UX Research Affinity Diagramming |  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. | When a problem keeps recurring and the cause stays unclear, the method exposes the underlying mechanism. It separates symptom, guess, and robust explanation from one another. | 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. | 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 | 1-4 h | 45–90 min | 30–60 min per interview |
Participantsdifferent | Internes Team | 3-8 | 3-10 | 1 participant per interview |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Persona Profiles, Needs Summary, Scenario Notes | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan | Theme clusters, Insight statements, Opportunity areas | Interview Notes, Themes, Insight Summary |
Tagsno overlap | ResearchCustomerSynthesis | Root causeProblem solvingQualityIncident | SynthesisQualitativeRoot cause | QualitativeResearchCustomerDiscovery |