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Selected:Card SortingAffinity DiagrammingFailure Mode and Effects AnalysisATAM (Architecture Tradeoff Analysis Method)
| Criterion |  UX Research Card Sorting |  UX Research Affinity Diagramming |  Operations Failure Mode and Effects Analysis |  Architecture ATAM (Architecture Tradeoff Analysis Method) |
|---|---|---|---|---|
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. | When research notes, feedback, or observations sit unconnected side by side, affinity diagramming sorts the raw material into solid themes. Many individual points turn into patterns that make decisions and opportunities clearer. | 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. | ATAM helps teams weigh architecture decisions when quality goals compete. The team considers business goals, stakeholder expectations, and technical decisions together. The evaluation shows which risks need further investigation. |
Complexitydifferent | Low | Low | High | High |
Timedifferent | 20-45 min | 45–90 min | 2-6 h | Several meetings plus preparation and analysis; total effort depends on scope |
Participantsdifferent | Based on research question | 3-10 | 3-10 | Evaluation team, architects, and relevant stakeholders |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop + async |
Outputdifferent | Content groups, Label set, IA hypotheses | Theme clusters, Insight statements, Opportunity areas | FMEA Table, Risk Priority, Mitigation Actions | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations |
Tagsno overlap | Information architectureNavigationStructure | SynthesisQualitativeRoot cause | RiskQualityOperationsRoot cause | ArchitectureQualityRiskTradeoffsStakeholders |