11835 IUPAC Gold Book - intelligence quotient 10.1351/goldbook.11835 11835 current initialism: IQ synonym: IQ test 1 Numeric measure of a person’s cognitive function based on one of several standardized tests of a problem-solving nature. The quotient is expressed as a ratio of the individual’s score to the median raw score of a sufficiently large reference population, the latter score taken as 100. The tests and numeric value are age-specific. Historically, test results have been prone to misuse in drawing invalid conclusions about differences in intelligence based on genetic background, gender or race, ignoring potentially confounding factors such as education, socioeconomic status and other environmental influences on test performance. PAC, 2015, 87, 841. 'IUPAC Glossary of terms used in neurotoxicology (IUPAC Recommendations 2015)' on page 876 (https://doi.org/10.1515/pac-2015-0103) https://goldbook.iupac.org/terms/view/11835/html https://goldbook.iupac.org/terms/view/11835/json https://goldbook.iupac.org/terms/view/11835/plain Citation: 'intelligence quotient' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.11835 The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms. If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org . The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using. 2026-06-28T19:34:10+00:00