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The term was coined by Richard Herrnstein and Charles Murray in their 1994 book The Bell Curve. [ 13 ] [ 14 ] [ 15 ] Flynn stated that, if asked, he would have named the effect after Read D. Tuddenham [ 16 ] who "was the first to present convincing evidence of massive gains on mental tests using a nationwide sample" [ 17 ] in a 1948 article.
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 bell curve for whites is centered roughly around IQ 100; the bell curve for American blacks roughly around 85; and those for different subgroups of Hispanics roughly midway between those for whites and blacks. The evidence is less definitive for exactly where above IQ 100 the bell curves for Jews and Asians are centered".
Rogers ' bell curve. The technology adoption lifecycle is a sociological model that describes the adoption or acceptance of a new product or innovation, according to the demographic and psychological characteristics of defined adopter groups. The process of adoption over time is typically illustrated as a classical normal distribution or
In response to the debate on The Bell Curve, the American Psychological Association set up a ten-person taskforce, chaired by Ulrich Neisser, to report on the book and its findings. In its report, " Intelligence: Knowns and Unknowns ", published in February 1996, the committee made the following comments on race differences in intelligence: [ 157 ]
The Global Bell Curve: Race, IQ and Inequality Worldwide is a book by Lynn, originally published Washington Summit Publishers in 2008. The book's stated purpose is to determine whether the racial and socioeconomic differences in the United States in average IQ, as originally claimed by the 1994 book The Bell Curve , also exist in other countries.
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Shifting the Overton window would involve proponents of policies outside the window persuading the public to expand the window while proponents of current policies, or similar ones within the window, attempt to convince people that policies outside the status quo should be deemed unacceptable. According to Lehman, who coined the term: