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Tree testing originated as a paper-based method created by Donna Spencer while at Step Two Designs. It is now mostly done online using commercial tools such as Treejack and UserZoom.

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Acknowledgements

Thanks to Andrew Mayfield at Optimal Workshop for the idea of writing a book about tree testing, and for supporting it along the way.

Thanks to Donna Spencer for her IA wisdom and early outlines for this guide.

Credits

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