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| Criterion |  UX Research Diary Study |  Innovation Lean Startup |  Business Strategy 5-Minuten VC-Check |  Operations 5 Whys |
|---|---|---|---|---|
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. | 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. | The 5-Minute VC Check clarifies opportunities and strategic options at the earliest idea stage. It compares problem quality, customer willingness to pay, alternatives, differentiation, and market potential, and captures the result as a VC-check note, go/sharpen/park decision, and risk list. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. |
Complexitydifferent | Medium | Medium | Low | Low |
Timedifferent | 1-4 Wochen | Wochen bis Monate je Lernzyklus | 5-15 min | 15-30 min |
Participantsdifferent | 5-20 | 2-8 | 1-5 | 2-6 |
Formatdifferent | Async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Hypothesis list, MVPs, Learning reports, Pivot or persevere decision | VC-check note, Go/sharpen/park decision, Risk and assumption list, Next validation step | Root cause notes, Countermeasures |
Tagsno overlap | UX researchTrackingBehavior | LeanStartupValidationMVP | StartupValidationCompetition | Root causeIncidentLeanProblem solving |