AP PSYCHOLOGY

Detailed explanation-1: -The original WAIS (Form I) was published in February 1955 by David Wechsler, as a revision of the Wechsler–Bellevue Intelligence Scale, released in 1939. It is currently in its fourth edition (WAIS-IV) released in 2008 by Pearson, and is the most widely used IQ test, for both adults and older adolescents, in the world.

Detailed explanation-2: -He developed the Wechsler-Bellevue Intelligence Scale, which quickly became the most widely used adult intelligence test in the United States.

Detailed explanation-3: -Used as a general test the intelligence, the Wechsler Adult Intelligence Scale –Fourth Edition (WAIS-IV) was developed to assess cognitive ability for adults. This instruments aids in examining the relationship between intellectual functional and memory.

Detailed explanation-4: -David Wechsler was a psychologist who became well known for his inventions of intelligence tests that evaluate cognitive abilities in adults and children. The theory he had regarding intelligence was that it is an effect rather than a cause and that non-intellectual factors contribute to its development.

Detailed explanation-5: -The history of David Wechsler’s intelligence scales is reviewed by tracing the origins of the subtests in the 1939 Wechsler-Bellevue Intelligence Scale.