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| Criterion |  Operations Fishbone Diagram |  Operations Failure Mode and Effects Analysis |  UX Research Card Sorting |
|---|---|---|---|
Purposedifferent | When a problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers. | 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 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. |
Complexitydifferent | Low | High | Low |
Timedifferent | 30-60 min | 2-6 h | 20-45 min |
Participantsdifferent | 2-8 | 3-10 | Based on research question |
Formatdifferent | Workshop | Workshop | Workshop + async |
Outputdifferent | Fishbone Diagram, Cause Categories, Investigation Backlog | FMEA Table, Risk Priority, Mitigation Actions | Content groups, Label set, IA hypotheses |
Tagsno overlap | Root causeQualityOperations | RiskQualityOperationsRoot cause | Information architectureNavigationStructure |
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Methods with strong topical overlap with the current selection, not yet in the comparison.
