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Criterion
Paper illustration of a branching category tree with a highlighted search path and possible dead ends.
UX Research
Tree Testing
Paper illustration for Contradiction Analysis.
Innovation
Contradiction Analysis
Paper illustration of a participant using a prototype while an observer takes notes beside a highlighted usability issue.
UX Research
Usability Testing
Purposedifferent
When a navigation exists but search paths still fail, tree testing checks findability without visual distraction. The method shows whether labels, levels, and paths really lead to the intended destination.When a system should improve while another measure suffers as a result, the method makes the underlying conflict precisely formulable. It separates the desired effect from its side effect. This makes solutions possible that address the contradiction deliberately instead of half-heartedly.When a product is built but people get stuck on tasks, usability testing shows the friction at concrete points. Observed use instead of self-report makes visible where orientation, understanding, or interaction breaks down.
Complexitysame
MediumMediumMedium
Timedifferent
1-2 Tage60-120 min1-2 h je Session
Participantsdifferent
Based on research question2-8Based on research question
Formatdifferent
AsyncWorkshopWorkshop + async
Outputdifferent
Findability Metrics, Path Analysis, Revised IAContradiction Statement, Abstraction Notes, Solution Principles, Concept IdeasUsability Issues, Severity List, Recommendations
Tagsno overlap
Information architectureNavigationFindability
ContradictionsInnovationProblem solving
ValidationUXPrototype
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Often compared together

Methods with strong topical overlap with the current selection, not yet in the comparison.

First-click Testing method illustration showing its working structure
UX Research
First-click Testing
A paper-based illustration representing Design Sprint with its core stages and visible working result.
Innovation
Design Sprint
Paper illustration showing three sorted card stacks and an open question about a possible group.
UX Research
Card Sorting