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IQ definitions

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WordNet (r) 3.0 (2005)

n
1: a measure of a person's intelligence as indicated by an intelligence test; the ratio of a person's mental age to their chronological age (multiplied by 100) [syn: intelligence quotient, IQ, I.Q.]

Merriam Webster's

abbreviation Etymology: Latin idem quod the same as

Merriam Webster's

noun Etymology: intelligence quotient Date: 1920 1. a number used to express the apparent relative intelligence of a person: as a. the ratio of the mental age (as reported on a standardized test) to the chronological age multiplied by 100 b. a score determined by one's performance on a standardized intelligence test relative to the average performance of others of the same age 2. proficiency in or knowledge of a specified subject <nobody questioned his hockey IQ>

Britannica Concise

Number intended to represent a measure of relative intelligence as determined by the subject's responses to a series of test problems. The IQ was originally computed as the ratio of a person's mental age to his or her chronological (physical) age, multiplied by 100, but use of the concept of mental age has been largely discontinued, and IQ is now generally assessed on the basis of the statistical distribution of scores. The most widely used intelligence tests are the Stanford-Binet test (1916), for children, and the Wechsler test (1939), originally for adults but now also for children. A score above 130 is considered to reflect "giftedness," while a score below 70 is considered to reflect mental impairment or mental retardation. Intelligence tests have provoked great controversy, particularly about what kinds of mental ability constitute intelligence and whether IQ adequately represents these abilities, and about cultural and class bias in test construction and standardization procedures.

Oxford Reference Dictionary

abbr. intelligence quotient.

Collin's Cobuild Dictionary

(IQs) Your IQ is your level of intelligence, as indicated by a special test that you do. IQ is an abbreviation for 'intelligence quotient'. Compare EQ. His IQ is above average. N-VAR: usu with supp

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