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| Criterion |  UX Research Personas |  Architecture ARID (Active Reviews for Intermediate Designs) |  Growth A/B Testing |  Product Discovery Fake Door Test |
|---|---|---|---|---|
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. | ARID examines how well developers can work with a technical design. It focuses on a part of the system that can still be revised, between the architecture overview and the detailed specification. | When two variants compete, discussions quickly decide by taste rather than effect. A/B Testing checks behavior under controlled conditions and separates real improvement from chance or expectation effects. | When demand is still unclear, it measures interest in a feature before it is built. It separates real behavior from polite agreement and deliberately keeps build effort small. |
Complexitydifferent | Medium | Medium | High | Medium |
Timedifferent | 1-3 Tage | 2–4 h review as a planning range; preparation and evaluation additional | 1-4 Wochen | 1-5 Tage |
Participantsdifferent | Internes Team | Designers, developers as users, and facilitation | 1-6 | Nutzertraffic |
Formatdifferent | Workshop + async | Workshop + async | Async | Async |
Outputdifferent | Persona Profiles, Needs Summary, Scenario Notes | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions | Experiment results, Decision log, Learning summary | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | ResearchCustomerSynthesis | ArchitectureEngineeringFeedbackValidationTasks | ExperimentsGrowthAnalyticsValidation | ValidationExperimentsDemandDiscovery |