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| Criterion |  UX Research User Interviews |  Operations Ivy Lee Method |  Product Discovery Kano Model |  Operations Getting Things Done |
|---|---|---|---|---|
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. | With a restless workday full of too many open items, the method creates radical simplicity. It directs attention to a short sequence instead of a broad, still-open field. | 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. | With many open commitments and ideas in daily life, a reliable external storage system emerges. The method relieves the mind so priority and context don't have to compete in memory. |
Complexitydifferent | Low | Low | Medium | Medium |
Timedifferent | 30–60 min per interview | 5-10 min daily | 1-2 Tage | 1-2 h Setup, laufend |
Participantsdifferent | 1 participant per interview | 1 | 10-50 | 1 |
Formatdifferent | Workshop + async | Async | Workshop + async | Async |
Outputdifferent | Interview Notes, Themes, Insight Summary | Daily Priority List, Completion Notes | Kano Matrix, Feature Classes, Priority Themes | Action Lists, Project List, Review Routine |
Tagsno overlap | QualitativeResearchCustomerDiscovery | PrioritizationProductivityExecution | SatisfactionPrioritizationCustomer | ProductivityPlanningTasksExecution |