The Pros and Cons of the Wechsler Adult Intelligence Scale

The Pros and Cons of the Wechsler Adult Intelligence Scale (WAIS-III) Introduction This paper discusses the pros and cons of the Wechsler Adult Intelligence Scale (WAIS-III). First, important definitional, theoretical issues, including the nature of intelligence, a brief history, and pros and cons are discussed. Next, the development, reliability, validity, and assets and limitations of the WAIS-III are examined. This is followed by discussion of the meaning of IQ scores, use of successive level interpretation and cautions and guidelines for administration. Last, subtests, assessing special population groups, short forms, profile forms, and what a report on intellectual assessment should contain are briefly discussed, followed by summary and conclusion.
The Nature of Intelligence Intelligence is an intrapersonal phenomenon, that is inside a person and it is generally agreed that the nature of this energy is unknown. Nevertheless, it may be known by its mental products (Groth-Marnet, 1997; Wechsler, 1939). Because there are many different ways to be intelligent there have also been many different definitions proposed (see Neiser, et al., 1996 for summary). A consensus on what constitutes intelligence is generally lacking. Alfred Binet (1908), the author of one of the first modern intelligence tests, defined intelligence as the inclination to take and maintain a specific direction, and capacity to adapt to achieve a goal outcome, and the power of autocriticism (Kaplan, & Saccuzzo, 2005). In contrast, David Wechsler, the developer of the Wechsler scales, defined intelligence as the aggregate capacity to act purposefully, think rationally, and deal effectively with the environment (Wechsler, 1958 as cited in Kaplin, & Saccuzzo). A review by Sternberg, (2005) of intelligence literature over the past century by psychologists and intelligence experts reveals two

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