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| Criterion |  UX Research User Interviews |  Operations Kaizen Event |  UX Research Affinity Diagramming |  Operations A3 Problem Solving |
|---|---|---|---|---|
Purposedifferent | When teams derive needs only from assumptions and real motives are missing, user interviews give direct access to behavior and meaning. Conversations from the target group's everyday life make patterns, tensions, and open questions solidly visible. | 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 research notes, feedback, or observations sit unconnected side by side, affinity diagramming sorts the raw material into solid themes. Many individual points turn into patterns that make decisions and opportunities clearer. | For a complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together. |
Complexitydifferent | Low | Medium | Low | Medium |
Timedifferent | 30–60 min per interview | 0.5-5 Tage | 45–90 min | 45-90 min |
Participantsdifferent | 1 participant per interview | 4-10 | 3-10 | 2-5 |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop + async |
Outputdifferent | Interview Notes, Themes, Insight Summary | Kaizen Charter, Waste List, Improvement Experiments, Standard Work Update | Theme clusters, Insight statements, Opportunity areas | A3 Report, Action Plan, Root Cause Analysis |
Tagsno overlap | QualitativeResearchCustomerDiscovery | LeanContinuous improvementOperations | SynthesisQualitativeRoot cause | LeanProblem solvingCoachingOperations |