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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.
IQ scores can differ to some degree for the same person on different IQ tests, so a person does not always belong to the same IQ score range each time the person is tested (IQ score table data and pupil pseudonyms adapted from description of KABC-II norming study cited in Kaufman 2009). [12] [13] Pupil KABC-II WISC-III WJ-III Asher: 90: 95: 111 ...
The number this calculation produced was the widely known intelligence quotient or IQ. For many people, both testers and tested, this number became a person's precise built-in intelligence. [ 3 ] Théodore Simon criticized this revision of the Binet-Simon test, arguing it to be a betrayal of the test's objective.
A Perceptual Reasoning Index (PRI) can be derived from the raw scores on the Matrix Reasoning and Block Design subtests. A Full Scale IQ-2 (FSIQ-2) can be derived from the raw scores on the Matrix Reasoning and Vocabulary subtests, while a Full Scale IQ-4 (FSIQ-4) can be derived from the raw scores on all 4 subtests. WASI-II Subtests grouped by ...
Terman and Merrill attempted to calculate IQs with a uniform standard deviation while still maintaining the use of the mental age scale by including a formula in the manual to convert the ratio IQs with means varying between age ranges and nonuniform standard deviations to IQs with a mean of 100 and a uniform standard deviation of 16.
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Curiosity quotient is a term put forth by author and journalist Thomas L. Friedman as part of an illustrative formula to explain how individuals can be powerfully motivated to learn about a personally interesting subject, whether or not they possess a particularly high intelligence quotient (IQ). The non-mathematical and fictitious formula is ...
Instead, Stern proposed dividing an individual's mental age by their chronological age to obtain a single ratio. This formula was later improved by Lewis Terman, who multiplied the intelligence quotient by 100 to obtain a whole number. [7] Stern, however, cautioned against the use of this formula as the sole way to categorize intelligence.