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  2. Christopher Langan - Wikipedia

    en.wikipedia.org/wiki/Christopher_Langan

    Christopher Michael Langan (born March 25, 1952) is an American horse rancher and former bar bouncer, known for scoring highly on an IQ test that gained him entry to a high IQ society, and for being formerly listed in the Guinness Book of Records high IQ section under the pseudonym of Eric Hart, alongside Marilyn vos Savant and Keith Raniere ...

  3. Intelligence: Knowns and Unknowns - Wikipedia

    en.wikipedia.org/wiki/Intelligence:_Knowns_and...

    Intelligence quotient (IQ) tests do correlate with one another and that the view that the general intelligence factor (g) is a statistical artifact is a minority one. IQ scores are fairly stable during development in the sense that while a child's reasoning ability increases, the child's relative ranking in comparison to that of other ...

  4. Heritability of IQ - Wikipedia

    en.wikipedia.org/wiki/Heritability_of_IQ

    The amount they improved was directly related to the adopting family's socioeconomic status. "Children adopted by farmers and laborers had average IQ scores of 85.5; those placed with middle-class families had average scores of 92. The average IQ scores of youngsters placed in well-to-do homes climbed more than 20 points, to 98." [41] [49]

  5. 17 unexpected signs you have a high IQ -- even if doesn't ...

    www.aol.com/article/2016/08/04/17-signs-you-have...

    Results showed that the average firstborn had an IQ of 103, compared to 100 for second children and 99 for third children. ... as psychologist Dr. Edward Selby reported in Psychology Today.

  6. Intelligence quotient - Wikipedia

    en.wikipedia.org/wiki/Intelligence_quotient

    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.

  7. Race and intelligence - Wikipedia

    en.wikipedia.org/wiki/Race_and_intelligence

    For example, the average scores of black people on some IQ tests in 1995 were the same as the scores of white people in 1945. [70] As one pair of academics phrased it, "the typical African American today probably has a slightly higher IQ than the grandparents of today's average white American." [71]

  8. IQ classification - Wikipedia

    en.wikipedia.org/wiki/IQ_classification

    IQ scores can differ to some degree for the same person on different IQ tests, so a person does not always belong to the same IQ score range each time the person is tested (IQ score table data and pupil pseudonyms adapted from description of KABC-II norming study cited in Kaufman 2009). [12] [13] Pupil KABC-II WISC-III WJ-III Asher: 90: 95: 111 ...

  9. IQ and the Wealth of Nations - Wikipedia

    en.wikipedia.org/wiki/IQ_and_the_Wealth_of_Nations

    The IQ figures are based on 3 different studies for 17 nations, two studies for 30 nations, and one study for 34 nations. There were actual tests for IQ in the case of 81 countries out of the 185 countries studied. For 104 nations there were no IQ studies at all and IQ was estimated based on the average IQ of surrounding nations. [2]