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| Criterion |  UX Research Usability Testing |  Product Discovery Problem Interview |  Innovation Design Sprint |  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 the picture of the problem still needs to become solid, it asks about real situations and consequences. It separates genuine suffering from mere interest in a solution. | When the product question is unclear and time pressure is high, the method takes a team from an open idea to a testable solution. It connects problem understanding, decision, and learning in one compact format, lowering the risk of spending a lot of energy on a mere guess. | 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 | 4-5 Tage | 1 Tag bis mehrere Wochen |
Participantsdifferent | Based on research question | 5-12 Interviews | 5-8 | 4-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop |
Outputdifferent | Usability Issues, Severity List, Recommendations | Problem Evidence, Risk Notes, Customer Segments | Prototype, Test Findings, Decision Rationale | Problem Statement, Prototype, Test Learnings |
Tagsno overlap | ValidationUXPrototype | DiscoveryInterviewsValidation | Design sprintPrototypeValidationInnovation | InnovationPrototypeResearch |