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The tree-testing method was created by well-known information architect Donna Spencer while at Step Two Designs and the Australian Bureau of Statistics. She ran tests manually, using index cards for tree branches and tasks, and compiled the results manually in a spreadsheet.
- For a summary of the original technique, see her Boxes and Arrows article.
- For more details about running a tree test on paper, see Donna's Testing Information Architecture article at UX Mastery.