Crime measurement and the black-white crime gap

A lot of instant experts have appeared on the black-white crime question. Many of these are somewhat unfamiliar with the quite large literature on the topic. The people who mostly study crime are criminologists and sociologists. However, as we know, these are some of the most left-skewed academics out there: Prior post: Do Republic professors…

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Shuey (1966)

Audrey M. Shuey (who even has a barebones Wikipedia page) is one of the most important female early researchers in intelligence research along with Barbara Burks and Leta Hollingworth. Shuey, Audrey M. (1966). The Testing of Negro Intelligence (2nd ed.). New York: Social Science Press. First edition: Shuey, A. M. (1958). The testing of Negro…

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Magic (American) Racism Theory

Aside from the usual Magic Dirt Theory, there is also the Magic (American) Racism Theory. James Flynn explains the conundrum for environmentalists: There is no doubt that high h² [heritability] estimates force environmentalists to find a factor or factors that are relatively uniform in their presence within the black population – and within the white…

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New paper out: Filling in the Gaps: The Association between Intelligence and Both Color and Parent-Reported Ancestry in the National Longitudinal Survey of Youth 1997

We’ve got a new important paper out in the special issue on race and intelligence in Psych: Hu et al, 2019, Filling in the Gaps: The Association between Intelligence and Both Color and Parent-Reported Ancestry in the National Longitudinal Survey of Youth 1997, Psych Little research has dealt with intragroup ancestry-related differences in intelligence in…

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The original texts of the Eyferth study

Often discussed, occasionally cited, but rarely read — certainly a highly suspicious combo — I post here the original German language final version (we think): Eyferth, K. (1961). Leistungen verschiedener Gruppen von Besatzungskindern in Hamburg-Wechsler Intelligenztest für Kinder (HAWIK). Archiv für die gesamte Psychologie, 113, 224-241. Eyferth, K. (1959). Eine Untersuchung der Neger-Mischlingskinder in Westdeutschland….

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Comments on Fagan and Holland (2007)’s racial equality paper

Someone sent me some questions on this study: Fagan, J. F., & Holland, C. R. (2007). Racial equality in intelligence: Predictions from a theory of intelligence as processing. Intelligence, 35(4), 319-334. African-Americans and Whites were asked to solve problems typical of those administered on standard tests of intelligence. Half of the problems were solvable on…

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How to do a meta-analysis of Black-White IQ gap

https://twitter.com/HoustonEuler/status/837894199814955008 There’s been some talk about whether the SIRE (self-identified race/ethnicity) gaps are closing and if so how much and when they did that. The matter is complicated for many reasons. The last major, published review is very dated, as it is from 2001. Roth, P. L., Bevier, C. A., Bobko, P., Switzer, F. S.,…

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