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| Criterion |  UX Research User Interviews |  Operations Gemba Walk |  Product Discovery Kano Model |
|---|---|---|---|
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. | When there is uncertainty about the real course of a process, the method brings observation to the place where work happens. It combines perception, follow-up questions, and process knowledge so decisions rest on actual workflows instead of assumptions. | When features need to be distinguished by their effect on satisfaction, it makes expectations and surprises comparable. It separates basic needs, performance contribution, and delight. |
Complexitydifferent | Low | Low | Medium |
Timedifferent | 30–60 min per interview | 30-120 min | 1-2 Tage |
Participantsdifferent | 1 participant per interview | 2-6 | 10-50 |
Formatdifferent | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Interview Notes, Themes, Insight Summary | Observation Notes, Improvement Ideas | Kano Matrix, Feature Classes, Priority Themes |
Tagsno overlap | QualitativeResearchCustomerDiscovery | LeanObservationProcessOperations | SatisfactionPrioritizationCustomer |
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