New paper out: Racial and ethnic group differences in the heritability of intelligence: A systematic review and meta-analysis (Pesta et al 2020)

So, our big Scarr-Rowe meta-analysis dropped recently. I was traveling at the time, so there was a bit of a delay to this posting. I also recorded a long video covering the reasons why this kind of study is important. Pesta, B. J., Kirkegaard, E. O. W., te Nijenhuis, J., Lasker, J., & Fuerst, J….

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Figlio et al 2017 race Scarr-Rowe results

Figlio, D. N., Freese, J., Karbownik, K., & Roth, J. (2017). Socioeconomic status and genetic influences on cognitive development. Proceedings of the National Academy of Sciences, 114(51), 13441-13446. Accurate understanding of environmental moderation of genetic influences is vital to advancing the science of cognitive development as well as for designing interventions. One widely reported idea…

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New paper out: Smart and Poor, or Rich and Dull? A U.S. County-Level Analysis of the Relationship between IQ and Presidential-Election Voting Behavior

Kirkegaard, E. O. W., & Pesta, B. J. (2019). Smart and Poor, or Rich and Dull? A U.S. County-Level Analysis of the Relationship between IQ and Presidential-Election Voting Behavior. Mankind Quarterly, 60(2). A small research stream exists which focuses on relationships between political ideology (inferred from voting behavior) and the intelligence of geopolitical sub-divisions such…

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New paper out: Race Differences: A Very Brief Review

Kirkegaard, E. O. W. (2019). Race Differences: A Very Brief Review. Mankind Quarterly, 60:2 The nature of race differences, and even the mere “existence” of human races, continues to be a major source of controversy and confusion. This brief review summarizes the empirical evidence about race differences and the conceptual issues related to taxonomy, as…

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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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The many lies of Ben van der Merwe

Ben van der Merwe (covered by others here, here), the social justice activist journalist, has been working for some years now to produce various hit pieces on researchers associated with the London Conference on Intelligence (which now has a Wikipedia page thanks to him). His efforts have largely succeeded in that his pieces and the…

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