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Examples of such situations include: “Remembering where to find things which have been put in a different place from usual” and “Handling money for shopping”. Each situation is rated by the informant for amount of change over the previous 10 years, using the following scale: 1. Much improved, 2. A bit improved, 3. Not much change, 4.
An intelligence quotient (IQ) is a total score derived from a set of standardized tests or subtests designed to assess human intelligence. [1] Originally, IQ was a score obtained by dividing a person's mental age score, obtained by administering an intelligence test, by the person's chronological age, both expressed in terms of years and months.
The WAIS-IV measure is acceptable for use with people who are 16–90 years of age. For people younger than 16, the Wechsler Preschool and Primary Scale of Intelligence (WPPSI, 2½–7 years, 7 months) and the Wechsler Intelligence Scale for Children (WISC, 6–16 years) are used. [14]
IQ tests generally are reliable enough that most people 10 years of age and older have similar IQ scores throughout life. [14] Still, some individuals score very differently when taking the same test at different times or when taking more than one kind of IQ test at the same age. [ 15 ]
Intellectually disabled patients with 1- and 2-year-old mental ages A 78-year-old intellectually disabled woman whose "mental condition has always been that of a child 5 or 6 years of age" Modern intelligence tests, such as the current Stanford-Binet test, no longer compute the IQ using the above "ratio IQ" formula.
The test is currently in its second edition, published in 2015. [2]Both editions are suitable for evaluation of intellectual giftedness, [3] and high scores are accepted as qualifying evidence for high IQ societies such as Intertel (min. IQ ≥ 135) and American Mensa (min. IQ ≥ 130).