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| Criterion |  UX Research Diary Study |  Operations PDCA Cycle |  Operations DMAIC |
|---|---|---|---|
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 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. | For a process problem with fluctuating performance, the method brings analysis and improvement into a disciplined sequence. It creates a framework in which numbers, causes, and control come together. |
Complexitydifferent | Medium | Low | High |
Timedifferent | 1-4 Wochen | 1 h bis mehrere Wochen | 2-12 Wochen |
Participantsdifferent | 5-20 | 1-8 | 3-10 |
Formatdifferent | Async | Workshop + async | Workshop + async |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | PDCA Log, Experiment Plan, Learning Outcome, Standard Change | Project Charter, Measurement Plan, Cause Analysis, Control Plan |
Tagsno overlap | UX researchTrackingBehavior | Continuous improvementLeanExperiments | Continuous improvementQualityProcess improvement |
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Methods with strong topical overlap with the current selection, not yet in the comparison.
