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| Criterion |  UX Research User Interviews |  Product Discovery Test Card |  Innovation Design Sprint |
|---|---|---|---|
Purposedifferent | 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. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. | 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 | Low | Low | High |
Timedifferent | 30–60 min per interview | 20-35 min | 4-5 Tage |
Participantsdifferent | 1 participant per interview | 1-5 | 5-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Interview Notes, Themes, Insight Summary | Test Card with a pre-set threshold | Prototype, Test Findings, Decision Rationale |
Tagsno overlap | QualitativeResearchCustomerDiscovery | ExperimentsValidationDiscoveryHypothesis | Design sprintPrototypeValidationInnovation |
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