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| Criterion |  UX Research Personas |  UX Research User Interviews |  Systems Thinking Current Reality Tree |  Operations Causal Factor Analysis |
|---|---|---|---|---|
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 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. | A Current Reality Tree condenses many symptoms into a few causal chains. The method makes visible which core problems drive several negative effects at once. | For an event with a complicated course, the method breaks down the contributing factors along the timeline. It shows how conditions, decisions, and reactions together produce a course of events. |
Complexitydifferent | Medium | Low | High | High |
Timedifferent | 1-3 Tage | 30–60 min per interview | 2-6 h | 2-6 h |
Participantsdifferent | Internes Team | 1 participant per interview | 3-8 | 3-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Persona Profiles, Needs Summary, Scenario Notes | Interview Notes, Themes, Insight Summary | Current Reality Tree, Core Problems, Intervention Ideas | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions |
Tagsno overlap | ResearchCustomerSynthesis | QualitativeResearchCustomerDiscovery | Systems thinkingRoot causeConstraintsCausality | CausalityIncidentRoot causeTimeline |