New paper: On group differences in the heritability of intelligence: A reply to Giangrande and Turkheimer (2022)

So it was finally published, our reply to our frenemies Eric Turkheimer and his student Evan J. Giangrande. For good measure, it's these two guys: The saga begins in 2020:…

Continue ReadingNew paper: On group differences in the heritability of intelligence: A reply to Giangrande and Turkheimer (2022)

New paper out: Europeans Have Larger Testes than Sub-Saharan Africans but Lower Testosterone Levels

Together with Ed Dutton and Helmuth Nyborg: Dutton, E., Nyborg, H., & Kirkegaard, E. O. W. (2022). Europeans Have Larger Testes than Sub-Saharan Africans but Lower Testosterone Levels. Mankind Quarterly,…

Continue ReadingNew paper out: Europeans Have Larger Testes than Sub-Saharan Africans but Lower Testosterone Levels

New paper out: County-level USA: No Robust Relationship between Geoclimatic Variables and Cognitive Ability

This one came out in Februrary, so we are a bit behind, but that's because I wanted to time the blogpost with the video. Aaaand the video is online now.…

Continue ReadingNew paper out: County-level USA: No Robust Relationship between Geoclimatic Variables and Cognitive Ability