The Pros and Cons of the Wechsler Adult Intelligence Scale

4135 Words Mar 7th, 2011 17 Pages
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 …show more content…
Sir Francis Galton (1869, 1883) quantified traits that were assumed to be correlated, and developed the first comprehensive test of intelligence. By the end of the 19th century, the foundation was laid for modern day intelligence testing (Wicket, 1998). In 1905, the French psychologist Alfred Binet published the first modern intelligence test to identify students who needed special help in coping with the school curriculum (Neiser, et al. 1996). Shortly thereafter in 1908 and 1911, Alfred Binet and Theodore Simon published revisions of the Binet intelligence test (Wicket). The mental age concept was adopted to express the results in adequate units. The concept is based on an individual’s performance in comparison to the average performance of individuals in a specific chronological age group (Kaplin, & Saccuzzo). A further refinement of the Stanford-Binet scale and translation (for American culture) was published in 1916 by Lewis M. Terman, who adopted Stern’s proposal that an individual's intelligence level be measured as an intelligence quotient (I. Q.). The IQ score presumably represented an individual’s rate of mental development as a quotient, between "mental age" and actual "chronological age" times 100 (to remove the decimal). Terman's test, known colloquially as the Stanford-Binet test, formed the basis for modern intelligence