Alan S. Kaufman, PhD, is Professor of Psychology at Yale University's Child Study Center in the School of Medicine and the Series Editor with Nadeen L. Kaufman of Wiley's Essentials of Psychological Assessment series. Dr. Kaufman worked closely with David Wechsler in the development and standardization of the WISC®-R, an earlier version of the test; has written numerous books on the Wechsler Scales and intelligence testing; and is the author of several popular assessment instruments used worldwide.

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