The Wechsler Intelligence Scales

The Wechsler Adult Intelligence Scale-Third Edition, Revised (WAIS-IIIR) was developed by David Wechsler especially for adults. The test measures both verbal and performance abilities. The Wechsler Adult Intelligence Scale (WAIS-IIIR) is the most current Wechsler test for adults. All items of a type are grouped into subtests and arranged in order of increasing difficulty. Verbal, performance, and full scale IQ are determined by the use of separate standardized tables for seven age groups from 16 to 74 years of age.

Wechsler also created the Wechsler Intelligence Scale for Children-Third Edition (WISC-III), which was meant to be used with school-aged children. It was revised in 1991 and is used for ages 6-16 years 11 months 30 days. Currently it is the most widely administered IQ test for children in the United States. It measures verbal and performance abilities separately, though it also yields an overall IQ score. The "baby" of the Wechsler series for children is the Wechsler Preschool and Primary Scale of Intelligence (WPPSI) for children ages three to seven years.

 

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