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Score distribution chart for sample of 905 children tested on 1916 Stanford–Binet Test. IQ classification is the practice of categorizing human intelligence, as measured by intelligence quotient (IQ) tests, into categories such as "superior" and "average". [1] [2] [3] [4]
An intelligence quotient (IQ) is a total score derived from a set of standardized tests or subtests designed to assess human intelligence. [1] Originally, 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 Bell Curve: Intelligence and Class Structure in American Life is a 1994 book by the psychologist Richard J. Herrnstein and the political scientist Charles Murray in which the authors argue that human intelligence is substantially influenced by both inherited and environmental factors and that it is a better predictor of many personal outcomes, including financial income, job performance ...
A Daily News analysis of vaccination data and IQ averages in each state reveals new patterns among anti- and pro-vaxxers, with five of the 10 states with the lowest IQs landing among the 10 states ...
800-290-4726 more ways to reach us. Sign in. Mail. ... but this study of 250,000 Norwegian 18- and 19-year-olds published in Science magazine revealed they had an average IQ 2.3 points higher than ...
The WAIS-IV was standardized on a sample of 2,200 people in the United States, ranging in age from 16 to 90. [12] The demographic characteristics of the sample were modeled after the proportions of different groups in an analysis of data from the U.S. Census Bureau. An extension of the standardization has been conducted with 688 Canadians in ...
The 1981 article "Average IQ values in various European countries" by Vinko Buj is the only international IQ study that over a short time period has compared IQs using the same IQ test. Rindermann (2007) states that it is of dubious quality with scant information regarding how it was done. [3] [4]
It estimated IQs for all US presidents, and validated the headline of the hoax, which stated Bush's was the lowest of any president in the last 50 years, though it estimates his IQ considerably higher (by nearly two standard deviations) than the 91 suggested in the hoax report. It rated G.W. Bush second to last since 1900, with an estimated IQ ...