Predicting IQ from genetics: how far have we come? [January 2020]

Counting significant hits was always a dumb way to measure progress in genomic prediction of a trait. Breeders using animals and plants never bothered with this approach and they used ridge regression for best predictive power (a “two cultures” problem no doubt). Researchers in human genetics are starting to catch up, implementing clever Enet approach…

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Genius: The Natural History of Creativity (Hans Eysenck, 1995)

Eysenck, H. J. (1995). Genius: The natural history of creativity (Vol. 12). Cambridge University Press. The book is on LibGen I continue my Eysenck readings with his popular genius book (prior review The Psychology of Politics (1954)). Having previously read some of Simonton’s work, Eysenck sure is a very different beast! The writing style follows…

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Stereotype threat: current evidence in January 2020

Stereotype threat is: a situational predicament in which people are or feel themselves to be at risk of conforming to stereotypes about their social group.[1][2] Stereotype threat is purportedly a contributing factor to long-standing racial and gender gaps in academic performance. It may occur whenever an individual’s performance might confirm a negative stereotype because stereotype…

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Women, taxes and voting

Many libertarians defend women’s voting rights (suffrage) by reference to general principles about equality of legal rights. The historical reason for this move, I think, is that libertarians and classical liberals was a political reaction to the extra legal rights of the nobility and royalty. Thus, their goal was to equalize such rights, and this…

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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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