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| Criterion |  UX Research Card Sorting |  Innovation Brainstorming |  Innovation Rapid Ideation |  Innovation Reverse Brainstorming |
|---|---|---|---|---|
Purposedifferent | When content only makes sense internally and users can't find the structure again, card sorting exposes their mental order. Terms, groups, and naming are then aligned with the target group's expectations. | When a team faces an open question with many obvious directions, the method first creates breadth instead of premature commitment. It separates idea flow from evaluation and makes lines of thought visible, creating a pool for selection and further development. | When a decision needs to be prepared quickly, the method generates many solution-close variants in a short time. It deliberately relies on pace to undercut self-censorship and perfectionism. This quickly produces a usable field for prioritization and further work. | For persistent errors or blockages, the method shifts the view to the opposite of the desired effect. It exposes the mechanics of failure and makes hidden causes easier to grasp. This makes improvement more concrete and the problem clearer. |
Complexitysame | Low | Low | Low | Low |
Timedifferent | 20-45 min | 30-60 min | 5-20 min | 30-60 min |
Participantsdifferent | Based on research question | 4-12 | 1-20 | 3-12 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | Content groups, Label set, IA hypotheses | Idea pool, Theme clusters, Shortlist | Ideenpool, Roh-Shortlist, Cluster | Reverse Ideas, Risk Themes, Solution Ideas |
Tagsno overlap | Information architectureNavigationStructure | BrainstormingIdeationCreativityWorkshopDivergence | BrainstormingIdeationDivergenceSpeed | BrainstormingIdeationCreativityRisk |