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| Criterion |  Product Discovery Kano Model |  Operations Ivy Lee Method |  UX Research User Interviews |  Operations Eat the Frog |
|---|---|---|---|---|
Purposedifferent | 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 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 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 method protects energy and attention for the task that creates the largest progress and is often postponed. |
Complexitydifferent | Medium | Low | Low | Low |
Timedifferent | 1-2 Tage | 5-10 min daily | 30–60 min per interview | 15-90 min daily |
Participantsdifferent | 10-50 | 1 | 1 participant per interview | 1 |
Formatdifferent | Workshop + async | Async | Workshop + async | Async |
Outputdifferent | Kano Matrix, Feature Classes, Priority Themes | Daily Priority List, Completion Notes | Interview Notes, Themes, Insight Summary | Priority Task, Completion Note, Daily Focus |
Tagsno overlap | SatisfactionPrioritizationCustomer | PrioritizationProductivityExecution | QualitativeResearchCustomerDiscovery | PrioritizationProductivityFocusExecution |