Recipe

Tree Testing

Validate your information architecture by asking users to find items in a stripped-down navigation tree — no visual design, just structure.

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Build the tree

Map your current or proposed IA into a nested label hierarchy. Keep depth under four levels — deeper trees confuse participants.

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Write tasks

Give participants realistic find scenarios. “Where would you look for return policy?” beats “Click the Support node.”

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Measure success

Track directness (first-click accuracy), time on task, and backtracking. Aim for 80%+ direct success before shipping.

When to run

  • 01Before a redesign — benchmark the current IA.
  • 02After card sorting — validate the categories you created.
  • 03When analytics show high search reliance — your nav may be failing.
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