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| Criterion |  UX Research Card Sorting |  Operations Failure Mode and Effects Analysis |  Operations Scatter Diagram |  Operations Fault Tree Analysis |
|---|---|---|---|---|
Purposedifferent | When content only makes sense internally and users can't find the structure again, card sorting exposes their mental order. Terms, groups, and naming are then aligned with the target group's expectations. | For a process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability. | When the question is whether two measures are related, the method makes patterns in the data picture visible. It separates felt correlations from relationships that actually show up in the data. | For a critical top event with several possible triggers, the method logically models failure paths. It makes visible which combinations of conditions can lead to damage. |
Complexitydifferent | Low | High | Low | High |
Timedifferent | 20-45 min | 2-6 h | 30-90 min | 2-6 h |
Participantsdifferent | Based on research question | 3-10 | 1-4 | 3-8 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Content groups, Label set, IA hypotheses | FMEA Table, Risk Priority, Mitigation Actions | Scatter Plot, Korrelationsnotiz, Hypothesenliste | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions |
Tagsno overlap | Information architectureNavigationStructure | RiskQualityOperationsRoot cause | Root causeQualityVisualization | RiskRoot causeSafety |