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| Criterion |  UX Research Tree Testing |  Operations PDCA Cycle |  Operations Kaizen Event |  UX Research Card Sorting |
|---|---|---|---|---|
Purposedifferent | When a navigation exists but search paths still fail, tree testing checks findability without visual distraction. The method shows whether labels, levels, and paths really lead to the intended destination. | 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 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 content only makes sense internally and users can't find the structure again, card sorting exposes their mental order. Terms, groups, and naming are then aligned with the target group's expectations. |
Complexitydifferent | Medium | Low | Medium | Low |
Timedifferent | 1-2 Tage | 1 h bis mehrere Wochen | 0.5-5 Tage | 20-45 min |
Participantsdifferent | Based on research question | 1-8 | 4-10 | Based on research question |
Formatdifferent | Async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Findability Metrics, Path Analysis, Revised IA | PDCA Log, Experiment Plan, Learning Outcome, Standard Change | Kaizen Charter, Waste List, Improvement Experiments, Standard Work Update | Content groups, Label set, IA hypotheses |
Tagsno overlap | Information architectureNavigationFindability | Continuous improvementLeanExperiments | LeanContinuous improvementOperations | Information architectureNavigationStructure |