IQ
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- Mensa International - What is IQ?
- Campus Manitoba PressbooksEDU Network - Standardization and the Intelligence Quotient
- Simply Psychology - IQ Vs EQ: Why Emotional Intelligence Matters More Than You Think
- MedicineNet - How Do I Know My IQ? IQ Ranges & Average Scores
- Verywell Mind - What's the Average IQ?
- Frontiers - The Role of Intelligence Quotient and Emotional Intelligence in Cognitive Control Processes
- National Center for Biotechnology Information - PubMed Central - IQ and Human Intelligence.
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IQ, (from “intelligence quotient”), a number used to express the relative intelligence of a person. It is one of many intelligence tests.
IQ was originally computed by taking the ratio of mental age to chronological (physical) age and multiplying by 100. Thus, if a 10-year-old child had a mental age of 12 (that is, performed on the test at the level of an average 12-year-old), the child was assigned an IQ of 12/10 × 100, or 120. If the 10-year-old had a mental age of 8, the child’s IQ would be 8/10 × 100, or 80. Based on this calculation, a score of 100—where the mental age equals the chronological age—would be average. Few tests continue to involve the computation of mental ages. See also Lewis Terman; Alfred Binet.