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| Criterion |  UX Research Diary Study |  Innovation Design Thinking |  UX Research Surveys |  UX Research Usability Testing |
|---|---|---|---|---|
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. | For complex user problems with an uncertain cause, the method connects observation, interpretation, and experiment into a learning cycle. It keeps the focus on real needs and avoids premature solution language. This produces robust decisions for product and service. | When a topic needs to be validated broadly and many people can answer the same question, surveys gather structured feedback in a scalable form. Answers become comparable and segmentable instead of remaining merely anecdotal. | When a product is built but people get stuck on tasks, usability testing shows the friction at concrete points. Observed use instead of self-report makes visible where orientation, understanding, or interaction breaks down. |
Complexitydifferent | Medium | High | Medium | Medium |
Timedifferent | 1-4 Wochen | 1 Tag bis mehrere Wochen | 3-14 Tage | 1-2 h je Session |
Participantsdifferent | 5-20 | 4-10 | 50+ | Based on research question |
Formatdifferent | Async | Workshop | Async | Workshop + async |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Problem Statement, Prototype, Test Learnings | Survey Results, Charts, Segment Insights | Usability Issues, Severity List, Recommendations |
Tagsno overlap | UX researchTrackingBehavior | InnovationPrototypeResearch | QuantitativeResearchValidation | ValidationUXPrototype |