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| Criterion |  UX Research Diary Study |  Product Strategy Lean Canvas |  UX Research Contextual Inquiry |  Innovation Lean Startup |
|---|---|---|---|---|
Purposedifferent | When experiences build up over days or weeks and a single session cannot capture them, Diary Study records the course of everyday life. Recurring triggers, moods, and habits become visible this way, beyond the sharpness of memory. | When an early product bet still has too many open points, it brings target group, problem, and assumptions into a single view. It condenses the idea so core risks become nameable. | When work processes are known only from accounts and the real context stays hidden, Contextual Inquiry makes behavior at the workplace visible. Observation and follow-up questions together show how people actually work, get interrupted, and improvise. | For uncertain business assumptions, the method forces the idea into contact with real market reactions early. It separates wishful picture, assumption, and observable behavior, so that learning becomes faster than planning. This translates uncertainty into measurable insight. |
Complexitysame | Medium | Medium | Medium | Medium |
Timedifferent | 1-4 Wochen | 45-90 min | 1-3 Wochen | Wochen bis Monate je Lernzyklus |
Participantsdifferent | 5-20 | 1-6 | 4-12 Beobachtungen | 2-8 |
Formatdifferent | Async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Lean Canvas, Core Assumptions, Experiment Backlog | Field Notes, Workflow Insights, Pain Points | Hypothesis list, MVPs, Learning reports, Pivot or persevere decision |
Tagsno overlap | UX researchTrackingBehavior | StartupLeanAssumptionsBusiness model | UX researchObservationContext | LeanStartupValidationMVP |