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| Criterion |  UX Research User Interviews |  Operations Family Tree Analysis |  Operations Barrier Analysis |
|---|---|---|---|
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. | For a series of incidents with a similar pattern, the method arranges individual events as branches of a common origin. It makes visible which conditions keep recurring. | For a risk that can only be managed through multiple layers of protection, the method examines the effectiveness of each barrier. It shows where safeguards are missing, too weak, or fail under real conditions. |
Complexitydifferent | Low | Medium | Medium |
Timedifferent | 30–60 min per interview | 2-4 h | 2-4 h |
Participantsdifferent | 1 participant per interview | 2-6 | 2-6 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Interview Notes, Themes, Insight Summary | Family Tree Diagram, Pattern Notes, Systemic Measures | Barrier Inventory, Failure Analysis per Barrier, Action Backlog |
Tagsno overlap | QualitativeResearchCustomerDiscovery | Root causePatternsIncidentSystemic | Root causeSafetyIncident |
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