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….

Continue Reading

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…

Continue Reading

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…

Continue Reading

Replies to Birney, Raff, Rutherford & Scally

Ewan Birney, Jennifer Raff, Adam Rutherford, Aylwyn Scally. Race, genetics and pseudoscience: an explainer. Ewan’s Blog: Bioinformatician at large. Additional remarks by Raff on her blog On Race, Genetics, and Pseudoscience Main thing of interest “Over the course of a year, we worked together on a statement that best reflects our consensus view of human…

Continue Reading

Measuring antisocial behavior well

I have previously written about issues with measuring antisocial/criminal behavior, but I found a study that did it very well, so we will be talking about it. Baker, L. A., Jacobson, K. C., Raine, A., Lozano, D. I., & Bezdjian, S. (2007). Genetic and environmental bases of childhood antisocial behavior: a multi-informant twin study. Journal…

Continue Reading

New paper out: Global Ancestry and Cognitive Ability (PNC study)

Lasker, J., Pesta, B. J., Fuerst, J. G., & Kirkegaard, E. O. W. (2019). Global Ancestry and Cognitive Ability. Psych, 1(1), 431-459. Using data from the Philadelphia Neurodevelopmental Cohort, we examined whether European ancestry predicted cognitive ability over and above both parental socioeconomic status (SES) and measures of eye, hair, and skin color. First, using…

Continue Reading

The northwest-southeast cline in Europe and the brain

A friend sent me this amazing study, seems to have been previously overlooked by hereditarians. Bakken, T. E., Dale, A. M., Schork, N. J., & Alzheimer’s Disease Neuroimaging Initiative. (2011). A geographic cline of skull and brain morphology among individuals of European Ancestry. Human heredity, 72(1), 35-44. Background Human skull and brain morphology are strongly…

Continue Reading