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| Criterion |  UX Research Card Sorting |  Delivery RAID Log |  Operations 8D Problem Solving |  Operations 5 Whys |
|---|---|---|---|---|
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. | Helps clarify scope, sequence, and delivery flow in concrete terms. It makes work, boundaries, and order steerable. The result is captured as a RAID Log and a source for status reporting. | For an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. |
Complexitydifferent | Low | Low | High | Low |
Timedifferent | 20-45 min | 30 min Setup, dann laufend | 1-6 Wochen | 15-30 min |
Participantsdifferent | Based on research question | 1-3 maintaining, briefing for everyone | 4-10 | 2-6 |
Formatdifferent | Workshop + async | Async | Workshop + async | Workshop |
Outputdifferent | Content groups, Label set, IA hypotheses | RAID Log, Status Report Source | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Root cause notes, Countermeasures |
Tagsno overlap | Information architectureNavigationStructure | RiskTrackingStakeholdersGovernance | QualityProblem solvingRoot cause | Root causeIncidentLeanProblem solving |