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Individual differences |
Methods | Statistics | Clinical | Educational | Industrial | Professional items | World psychology |
The Wechsler Adult Intelligence Scale - Revised (WAIS-R) was standardised in 1981 on a sample of 1,880 US subjects, ranging from 16 to 74 years of age, broken down into 9 different age groups. It was considered to have very strong reliability. The current version is WAIS-III (1997).