Essentials of WISC-IV Assessment
Chapter One
INTRODUCTION AND OVERVIEW
There are more individually administered tests of intelligence and IQ available
today than were available at any other time in the history of psychological
assessment and applied measurement. Despite all the innovations
and exemplary quantitative and qualitative characteristics of new and recently revised
intelligence tests, the Wechsler scales continue to reign supreme. In fact, the
Wechsler Intelligence Scale for Children-Fourth Edition (WISC-IV), like its
predecessor-the WISC-III-will very likely become the most widely used measure
of intelligence the world over. Because the latest edition of the WISC represents
the most substantial revision of any Wechsler scale to date, our task of developing
an interpretive system for the WISC-IV that is both psychometrically
and theoretically defensible was made more difficult as compared to past endeavors
(e.g., Flanagan, McGrew, & Ortiz, 2000; Kaufman & Lichtenberger,
2002). More specifically, the elimination of the Verbal and Performance IQs required
us to reconceptualize previous systems completely. Also, the proliferation
of anti-profile research and writing, primarily by Glutting, Watkins, and colleagues,
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