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| Criterion | ![]() UX Research Usability Testing | ![]() UX Research User Interviews | ![]() Product Discovery Opportunity Interview | ![]() Innovation Design Sprint |
|---|---|---|---|---|
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 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. | When opportunities are still hidden behind signals of need, it structures conversations around needs and obstacles. It looks for patterns that lead to new product opportunities. | 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. |
Complexitydifferent | Medium | Low | Medium | High |
Timedifferent | 1-2 h je Session | 30–60 min per interview | 30-60 min je Interview | 4-5 Tage |
Participantsdifferent | Based on research question | 1 participant per interview | 5-12 Interviews | 5-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Usability Issues, Severity List, Recommendations | Interview Notes, Themes, Insight Summary | Interview Notes, Opportunity Themes, Customer Quotes | Prototype, Test Findings, Decision Rationale |
Tagsno overlap | ValidationUXPrototype | QualitativeResearchCustomerDiscovery | DiscoveryInterviewsOpportunityCustomer | Design sprintPrototypeValidationInnovation |



