Tree Testing
UX Design
What is Tree Testing
Tree Testing is a usability research method that evaluates the findability of content in a website or application's information architecture. It tests how easily users can locate items within a stripped-down, text-only version of your site's hierarchy.
How Tree Testing works
The process involves:
- Tree Structure: Creating a text-only site hierarchy
- Task Scenarios: Developing realistic finding tasks
- User Testing: Participants locate items in the tree
- Analysis: Evaluating success rates and navigation paths
When to conduct Tree Testing
Perform tree testing when designing new navigation structures, validating existing information architecture, or before implementing major site reorganizations. It's particularly valuable early in the design process before visual design begins.
Benefits of Tree Testing
This method provides clear insights into navigation effectiveness, identifies confusing labels and categories, and validates information architecture decisions. It helps create more intuitive content organization without the influence of visual design or layout.
Generally, 50-100 participants provide reliable results. However, you can get valuable insights with as few as 15-20 participants if you're doing quick iterative testing.
Yes, tree testing works best when combined with card sorting (to establish initial structure) and usability testing (to validate the complete interface). Each method provides different insights.
Write realistic tasks that reflect actual user goals, avoid using the exact words from your navigation labels, and make sure there's only one correct destination for each task.
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