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Autodidact and abolitionist Frederick Douglass (1817–1895) served as a high-profile counterexample to myths of black intellectual inferiority.. Claims of differences in intelligence between races have been used to justify colonialism, slavery, racism, social Darwinism, and racial eugenics.
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]
Several authors, including Leon Kamin in The Science and Politics of IQ, [24] Angela Saini in Superior: The Return of Race Science, [25] and John P. Jackson, Jr. and Nadine M. Weidman in Race, Racism, and Science, [26] have argued that since the early years of IQ testing comparisons between nations have been used to justify discrimination ...
A section in IQ and human intelligence (1998) by Nicholas Mackintosh discussed ethnic groups and Race and intelligence: separating science from myth (2002) edited by Jefferson Fish presented further commentary on The Bell Curve by anthropologists, psychologists, sociologists, historians, biologists and statisticians. [154]
Race Differences in Intelligence: An Evolutionary Analysis is a 2006 book by controversial race and intelligence writer Richard Lynn.The book reviews selected literature on IQ testing and argues that genetic racial differences exist, with a discussion of the causes and consequences.
Age 7 IQ Age 17 IQ Age 17 GPA Age 17 class rank Age 17 school aptitude Adopting parents tested when children were 7 and 17: 120: 115 — — — Non adopted, with two white biological parents: 117: 109: 3.0: 64: 69 Adopted, with two white biological parents: 112: 106: 2.8: 54: 59 Adopted, with one white and one black biological parent: 109: 99: ...
Norwegian epidemiologists used military records to examine the birth order, health status, and IQ scores of nearly 250,000 18- and 19-year-old men born between 1967 and 1976.
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 ...