Wechsler Adult Intelligence Scales (WAIS)

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  • One of the most widely used and researched intelligence tests. The WAIS was created by David Wechsler in 1955. It was adapted from an early measure developed by Wechsler in 1939, the Wechsler-Bellevue Intelligence Scale. The WAIS has since undergone a number of revi sions and is currently in its third edition (WAIS-III, 1997), with plans for a fourth edition under way. The WAIS-III is composed of 14 subtests that produce raw scores, which are later converted into scaled scores based on comparison with an age-based normative sample. Subtests are divided into two main areas of cognitive functioning: verbal and performance. An overall full-scale intelligence quotient (IQ) score as well as both performance and verbal IQ scores are calculated. In addition, there are four main ...

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