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Hans Eysenck defended the hereditarian point of view and the use of intelligence tests in "Race, Intelligence and Education" (1971), a pamphlet presenting Jensenism to a popular audience, and "The Inequality of Man" (1973). He was severely critical of anti-hereditarians whose policies he blamed for many of the problems in society.
Discussions of the issue in the United States, especially in the writings of Madison Grant, influenced German Nazi claims that the "Nordics" were a "master race." [12] As American public sentiment shifted against the Germans, claims of racial differences in intelligence increasingly came to be regarded as problematic. [13]
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]
The debate concerns possible explanations of group differences encountered in the study of race and intelligence. Since the beginning of IQ testing around the time of World War I there have been observed differences between average scores of different population groups, though these differences have fluctuated and in many cases steadily ...
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 ...
The data, corrected for the Flynn effect, was published in 2000 by John Loehlin in the Handbook of Intelligence. [12] The data showed mixed adoptees scoring lower than white adoptees with gaps of 6.1 and 8.3 points at ages 7 and 17, while black adoptees scored 20.1 and 17.8 points below white adoptees at ages 7 and 17.
Ferguson upholding of racial segregation in the United States, American popular and scholarly opinions of scientific racism and its sociologic practice had evolved. [ 134 ] In 1960, the journal Mankind Quarterly was founded, which is commonly described as a venue for scientific racism and white supremacy, [ 135 ] [ 136 ] [ 137 ] and as lacking ...
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. [6] [7]