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| Criterion |  Decision Making Delphi Method |  Operations 5 Whys |  UX Research Affinity Diagramming |
|---|---|---|---|
Purposedifferent | When knowledge is distributed and direct dominance should be avoided, groups quickly fall under the sway of their opinion leaders. The Delphi Method gathers assessments iteratively and gradually brings expert judgments closer together. | 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. | 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. |
Complexitydifferent | High | Low | Low |
Timedifferent | 1-4 Wochen | 15-30 min | 45–90 min |
Participantsdifferent | 6-30 Experten | 2-6 | 3-10 |
Formatdifferent | Async | Workshop | Workshop |
Outputdifferent | Expert Forecast, Consensus Range, Assumption Notes | Root cause notes, Countermeasures | Theme clusters, Insight statements, Opportunity areas |
Tagsno overlap | ForecastingExpertsDecisionStrategy | Root causeIncidentLeanProblem solving | SynthesisQualitativeRoot cause |
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