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| Criterion |  Facilitation Timeline |  UX Research User Interviews |  Operations Causal Factor Analysis |  UX Research Affinity Diagramming |
|---|---|---|---|---|
Purposedifferent | When a project, incident, or change process is only remembered in fragments, Timeline brings the sequence back into a readable form. It makes turning points, precursors, and after-effects recognizable over the course of time. | When teams derive needs only from assumptions and real motives are missing, user interviews give direct access to behavior and meaning. Conversations from the target group's everyday life make patterns, tensions, and open questions solidly visible. | For an event with a complicated course, the method breaks down the contributing factors along the timeline. It shows how conditions, decisions, and reactions together produce a course of events. | 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. |
Complexitydifferent | Low | Low | High | Low |
Timedifferent | 30-90 min | 30–60 min per interview | 2-6 h | 45–90 min |
Participantsdifferent | 2-12 | 1 participant per interview | 3-10 | 3-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Timeline, Milestones, Insight Notes | Interview Notes, Themes, Insight Summary | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions | Theme clusters, Insight statements, Opportunity areas |
Tagsno overlap | TimelineFacilitationSequence | QualitativeResearchCustomerDiscovery | CausalityIncidentRoot causeTimeline | SynthesisQualitativeRoot cause |