Intelligence quotient (IQ)

Topic | v1 | created by janarez |

An intelligence quotient (IQ) is a total score derived from a set of standardized tests or subtests designed to assess human intelligence. The abbreviation "IQ" was coined by the psychologist William Stern for the German term Intelligenzquotient, his term for a scoring method for intelligence tests at University of Breslau he advocated in a 1912 book. Historically, IQ was a score obtained by dividing a person's mental age score, obtained by administering an intelligence test, by the person's chronological age, both expressed in terms of years and months. The resulting fraction (quotient) was multiplied by 100 to obtain the IQ score. For modern IQ tests, the raw score is transformed to a normal distribution with mean 100 and standard deviation 15. This results in approximately two-thirds of the population scoring between IQ 85 and IQ 115 and about 2.5 percent each above 130 and below 70.


Edit details Edit relations Attach new author Attach new topic Attach new resource

cons given in Bad News for the Highly Intelligent

6.0 rating 1.0 level 9.0 clarity 4.0 background – 1 rating

Superior IQs are associated with mental and physical disorders, research suggests.