| an 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. Abbreviation: IQ |
| intelligence quotient n. Abbr. IQ The ratio of tested mental age to chronological age, usually expressed as a quotient multiplied by 100. |
intelligence quotient n.
Abbr. IQ, I.Q.
An index of measured intelligence expressed as the ratio of tested mental age to chronological age, multiplied by 100.