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This book is both an examination manual, with directions for giving this new series of "performance" tests of intelligence, and a report of their construction or source and their standardization. Like almost all other groups of performance tests, this one is intended primarily for children. Only one of the tests, a picture arrangement, has been especially devised by the authors; the others are taken over from earlier scales.
A Performance Ability Scale.. Arch NeurPsych. 1935;33(2):452. doi:10.1001/archneurpsyc.1935.02250140208027