intelligence quotient

intel′ligence quo′tient, [Psychol.]

Psychologyan intelligence test score that is obtained by dividing mental age, which reflects the age-graded level of performance as derived from population norms, by chronological age and multiplying by 100: a score of 100 thus indicates a performance at exactly the normal level for that age group. Abbr.: IQ Cf. achievement quotient.

Collins Concise English Dictionary © HarperCollins Publishers::

intelligence quotient n

a measure of the intelligence of an individual derived from results obtained from specially designed tests. The quotient is traditionally derived by dividing an individual's mental age by his or her chronological age and multiplying the result by 100Abbreviation: IQ

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