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| Criterion |  UX Research User Interviews |  Systems Thinking Causal Loop Diagram |  Product Discovery Opportunity Interview |  Systems Thinking Current Reality Tree |
|---|---|---|---|---|
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. | A Causal Loop Diagram makes feedback, reinforcement, and balance in a system legible. It uncovers side effects and self-reinforcement that stay hidden in linear explanations. | When opportunities are still hidden behind signals of need, it structures conversations around needs and obstacles. It looks for patterns that lead to new product opportunities. | A Current Reality Tree condenses many symptoms into a few causal chains. The method makes visible which core problems drive several negative effects at once. |
Complexitydifferent | Low | Medium | Medium | High |
Timedifferent | 30–60 min per interview | 1-3 h | 30-60 min je Interview | 2-6 h |
Participantsdifferent | 1 participant per interview | 2-8 | 5-12 Interviews | 3-8 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | Interview Notes, Themes, Insight Summary | Causal Loop Diagram, Feedback Notes, Leverage Points | Interview Notes, Opportunity Themes, Customer Quotes | Current Reality Tree, Core Problems, Intervention Ideas |
Tagsno overlap | QualitativeResearchCustomerDiscovery | FeedbackSystems thinkingCausalityDynamics | DiscoveryInterviewsOpportunityCustomer | Systems thinkingRoot causeConstraintsCausality |