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| Criterion | ![]() UX Research Diary Study | ![]() Operations Kaizen Event | ![]() Product Strategy Lean Canvas | ![]() Operations PDCA Cycle |
|---|---|---|---|---|
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 a tightly scoped process segment with noticeable waste, the method bundles shared energy for change. It suits situations that call for fast learning loops and visible adjustments. | 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. | For an improvement that still has to prove itself in everyday work, the method runs it through small learning loops. It connects planning, checking, and standardization into a repeatable learning mode. |
Complexitydifferent | Medium | Medium | Medium | Low |
Timedifferent | 1-4 Wochen | 0.5-5 Tage | 45-90 min | 1 h bis mehrere Wochen |
Participantsdifferent | 5-20 | 4-10 | 1-6 | 1-8 |
Formatdifferent | Async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Kaizen Charter, Waste List, Improvement Experiments, Standard Work Update | Lean Canvas, Core Assumptions, Experiment Backlog | PDCA Log, Experiment Plan, Learning Outcome, Standard Change |
Tagsno overlap | UX researchTrackingBehavior | LeanContinuous improvementOperations | StartupLeanAssumptionsBusiness model | Continuous improvementLeanExperiments |



