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  2. Minnesota Transracial Adoption Study - Wikipedia

    en.wikipedia.org/wiki/Minnesota_Transracial...

    On measures of cognitive ability (IQ tests) and school performance, black children in the U.S. have performed worse than white children. At the time of the study, the gap in average performance between the two groups of children was approximately one standard deviation, which is equivalent to about 15 IQ points or 4 grade levels at high school graduation.

  3. IQ classification - Wikipedia

    en.wikipedia.org/wiki/IQ_classification

    Download as PDF; Printable version; In other projects ... but most now report a standard score with a mean score level of 100. When a test-taker scores higher or ...

  4. How Much Can We Boost IQ and Scholastic Achievement?

    en.wikipedia.org/wiki/How_Much_Can_We_Boost_IQ...

    Controversy over the article led to the coining of the term Jensenism, [2] defined as the theory that IQ is largely determined by genes, including racial heritage. [3] It is among the most controversial [ 4 ] [ 5 ] in American psychology , and was largely responsible for initiating the current debate over race and intelligence .

  5. Race and intelligence - Wikipedia

    en.wikipedia.org/wiki/Race_and_intelligence

    Two out of three tests found no significant differences. One test found higher scores for non-white people. Moore (1986) compared black and mixed-race children adopted by either black or white middle-class families in the United States. Moore observed that 23 black and interracial children raised by white parents had a significantly higher mean ...

  6. Eyferth study - Wikipedia

    en.wikipedia.org/wiki/Eyferth_study

    Stressing the similarity of average IQ scores across racial groups in the Eyferth study, James Flynn, Richard E. Nisbett, Nathan Brody, and others have interpreted it as supporting the notion that IQ differences between whites and blacks observed in many other studies are mostly or wholly cultural or environmental in origin. [10]

  7. History of the race and intelligence controversy - Wikipedia

    en.wikipedia.org/wiki/History_of_the_race_and...

    Jensen's own research suggests that IQ tests amalgamate two forms of thinking which are hierarchically related but which become differentially distributed in the population according to SES: level 1 and level 2, associative learning and abstract thinking (g), respectively. Blacks do as well as whites on tests of associative learning, but they ...

  8. 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 ...

  9. Intelligence and public policy - Wikipedia

    en.wikipedia.org/wiki/Intelligence_and_public_policy

    Re-analysis, and subsequent studies, have established that general mental ability (IQ) predicts job performance across all jobs. [9] The validity of IQ varies most notably with job complexity: IQ matters little for simple jobs such as packing, and a great deal in complex jobs such as medicine. These findings have major significance.