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| Criterion |  UX Research Usability Testing |  Product Discovery Solution Interview |  Innovation TRIZ |  Innovation Design Thinking |
|---|---|---|---|---|
Purposedifferent | 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. | When a solution idea is already on the table, it checks how it is understood and evaluated. It looks for resonance, objections, and missing fit early in the conversation. | For technical contradictions or trade-offs, the method looks for solutions that resolve opposing requirements at the same time. It translates limits into an explicit picture of conflict that becomes workable. This produces not just compromises but more elegant principles. | 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. |
Complexitydifferent | Medium | Medium | High | High |
Timedifferent | 1-2 h je Session | 30-60 min je Interview | 1-4 h | 1 Tag bis mehrere Wochen |
Participantsdifferent | Based on research question | 5-10 Interviews | 2-8 | 4-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Usability Issues, Severity List, Recommendations | Solution Feedback, Objection List, Validation Notes | Contradiction Statement, Inventive Principles, Solution Concepts | Problem Statement, Prototype, Test Learnings |
Tagsno overlap | ValidationUXPrototype | ValidationInterviewsPrototype | InnovationProblem solvingContradictionsCreativity | InnovationPrototypeResearch |