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| Criterion |  UX Research User Interviews |  UX Research Customer Journey Mapping |  Decision Making Delphi Method |  Decision Making Assumption Surfacing |
|---|---|---|---|---|
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. | 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. | 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. | Plans often contain assumptions that were never openly stated and remain dangerous precisely because of that. Assumption Surfacing makes these silent premises visible and prioritizes which of them carry the initiative or could sink it. |
Complexitydifferent | Low | Medium | High | Low |
Timedifferent | 30–60 min per interview | 2-4 h | 1-4 Wochen | 45-90 min |
Participantsdifferent | 1 participant per interview | 4-10 | 6-30 Experten | 2-8 |
Formatdifferent | Workshop + async | Workshop | Async | Workshop + async |
Outputdifferent | Interview Notes, Themes, Insight Summary | Journey Map, Pain-point List, Opportunity Backlog | Expert Forecast, Consensus Range, Assumption Notes | Assumption List, Critical Assumptions, Learning Plan |
Tagsno overlap | QualitativeResearchCustomerDiscovery | JourneyServiceService design | ForecastingExpertsDecisionStrategy | AssumptionsRiskDecisionDiscovery |