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| Criterion |  UX Research Customer Journey Mapping |  Operations 5 Whys |  Operations 8D Problem Solving |  Operations Root Cause Tree Analysis |
|---|---|---|---|---|
Purposedifferent | When a user journey falls apart across many touchpoints, customer journey mapping makes the experience visible as a coherent arc. Phases, emotions, and breaks become legible enough to prioritize critical moments deliberately. | 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. | For an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. | For a problem with several suspected causes, the method builds a causal structure instead of a mere list. It makes visible how causes connect and where the strongest points of leverage lie. |
Complexitydifferent | Medium | Low | High | Medium |
Timedifferent | 2-4 h | 15-30 min | 1-6 Wochen | 1-3 h |
Participantsdifferent | 4-10 | 2-6 | 4-10 | 2-8 |
Formatdifferent | Workshop | Workshop | Workshop + async | Workshop |
Outputdifferent | Journey Map, Pain-point List, Opportunity Backlog | Root cause notes, Countermeasures | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Cause Tree, Evidence Notes, Countermeasures |
Tagsno overlap | JourneyServiceService design | Root causeIncidentLeanProblem solving | QualityProblem solvingRoot cause | Root causeTreeIncidentQuality |