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| Criterion |  UX Research User Interviews |  Decision Making Decision Matrix |  Decision Making Argument Mapping |  Knowledge Modeling IBIS |
|---|---|---|---|---|
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 several options collide with several criteria, comparison quickly becomes subjective. A Decision Matrix makes the trade-off visible and brings weighting, criteria, and options into a shared logic. | When statements, evidence, and counterarguments get mixed up, a debate quickly loses its structure. Argument Mapping breaks a thesis down into its reasoning and makes visible what it really rests on. | IBIS structures thinking about complex questions as a sequence of issues, ideas, and arguments. The method keeps discussions open without forcing them into premature consensus. |
Complexitydifferent | Low | Medium | Medium | Medium |
Timedifferent | 30–60 min per interview | 45-90 min | 1-3 h | 1-3 h |
Participantsdifferent | 1 participant per interview | 2-8 | 1-8 | 2-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Interview Notes, Themes, Insight Summary | Decision Matrix, Scoring Rationale, Selected Option | Argument Map, Evidence Gaps, Decision Rationale | Issue Map, Positions, Argument Notes |
Tagsno overlap | QualitativeResearchCustomerDiscovery | DecisionCriteriaScoringTradeoffs | SensemakingDecisionRationale | RationaleKnowledgeDecision |