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| Criterion |  Operations 8D Problem Solving |  Innovation Design Sprint |  UX Research Surveys |  Innovation Design Thinking |
|---|---|---|---|---|
Purposedifferent | For an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. | 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. | When a topic needs to be validated broadly and many people can answer the same question, surveys gather structured feedback in a scalable form. Answers become comparable and segmentable instead of remaining merely anecdotal. | For complex user problems with an uncertain cause, the method connects observation, interpretation, and experiment into a learning cycle. It keeps the focus on real needs and avoids premature solution language. This produces robust decisions for product and service. |
Complexitydifferent | High | High | Medium | High |
Timedifferent | 1-6 Wochen | 4-5 Tage | 3-14 Tage | 1 Tag bis mehrere Wochen |
Participantsdifferent | 4-10 | 5-8 | 50+ | 4-10 |
Formatdifferent | Workshop + async | Workshop | Async | Workshop |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Prototype, Test Findings, Decision Rationale | Survey Results, Charts, Segment Insights | Problem Statement, Prototype, Test Learnings |
Tagsno overlap | QualityProblem solvingRoot cause | Design sprintPrototypeValidationInnovation | QuantitativeResearchValidation | InnovationPrototypeResearch |