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| Criterion |  UX Research Diary Study |  Architecture C4 Model |  Operations 8D Problem Solving |  Operations Scatter Diagram |
|---|---|---|---|---|
Purposedifferent | When experiences build up over days or weeks and a single session cannot capture them, Diary Study records the course of everyday life. Recurring triggers, moods, and habits become visible this way, beyond the sharpness of memory. | The C4 Model makes a system legible across several resolution levels, from context down to code. It suits situations where different audiences need to understand the same architecture from different altitudes. | 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. | 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. |
Complexitydifferent | Medium | Low | High | Low |
Timedifferent | 1-4 Wochen | 1-4 h | 1-6 Wochen | 30-90 min |
Participantsdifferent | 5-20 | 1-5 | 4-10 | 1-4 |
Formatdifferent | Async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Context Diagram, Container Diagram, Component Diagram | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Scatter Plot, Korrelationsnotiz, Hypothesenliste |
Tagsno overlap | UX researchTrackingBehavior | ArchitectureCommunicationVisualization | QualityProblem solvingRoot cause | Root causeQualityVisualization |