Here's an easy-to-follow, visual guide to using the Wechsler Intelligence and Memory Scales to design assessments and make interpretations you can stand by -- assessments and interpretations that are both psychometrically and theoretically defensible. In this guide, Dawn Flanagan, Kevin McGrew, and Samuel Ortiz modernize the interpretation of the Wechsler Intelligence Scales by applying Gf-Gc theory and the cross-battery approach to intellectual assessment and interpretation. They show you in-depth how to use cross-battery principles and techniques to augment the Wechsler Intelligence Scales (WPPSI-R, WISC-III, WAIS-III) in a psychometrically defensible manner and how to interpret the results of Wechsler-based cross-battery assessments within the context of today's theory and research. In the three comprehensive parts, the guide shows the approach used by the authors: a comprehensive review of the psychometric, theoretical, and qualitative characteristics of all of the individual subtests of the WPPSI-R, WISC-III, WAIS-III, WMS-III, and CMS; and a thorough understanding of the product of grounding cognitive ability assessment and interpretation, with the Wechsler Scales, in strong theory and research -- the Wechsler-based Gf-Gc cross-battery approach. What's more, The Wechsler-based cross-battery approach presented here narrows the theory-practice gap in the field of intellectual assessment and includes well-articulated theory and research based guidelines for conducting Wechsler cross-battery assessments with culturally and linguistically diverse individuals. For practicing clinicians.