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).…
Up to date introductions to psychology, stats, and genomics — 2019 March
A fellow emailed me asking for help on what to start reading to learn psychology and stats. The replication crisis means that most older psychology introductions should be viewed with…
Direct estimate of between group heritability with estimated polygenic scores
A while ago, I had an idea for a direct estimate of the between group heritability from polygenic scores. The idea is based on the old DeFries (1972) paper, which…
Before PISA and Binet
Some years ago, I discovered the Swiss dataset used in R. It has data from the late 1800s of Swiss subnational units, 47 French speaking 'provinces' i.e. sub-canton level (probably…
Extreme phenotype colorism
One prominent model for why (some) nonwhite race groups do worse is that they experience hostile experience based on skin color. For instance, Hunter (2007) writes: How does colorism operate?…
Of cats and dogs and men
Genetic variation between populations/races of a species is a nice single summary statistic about how large between population phenotypic differences to expect. In case of humans, this value (Fst, the…
Thou shall not cite Richard Lynn
Thou should in fact basically copy his work, and then publish it in The Lancet, and then not cite him, or Heiner Rindermann, or David Becker, or Gerhard Meisenberg --…
Psychology of the unthinkable (Tetlock et al 2000)
Tetlock, P. E., Kristel, O. V., Elson, S. B., Green, M. C., & Lerner, J. S. (2000). The psychology of the unthinkable: taboo trade-offs, forbidden base rates, and heretical counterfactuals.…
Paige-Harden, Turkheimer and the psychometric left
Kathryn Paige Harden is professor of psychology who belongs to the Turkheimerian 'left psychometrics' school. I've discussed the odd behavior of Eric Turkheimer before, but since then I found a…
A partial test of DUF1220 for population differences in intelligence?
You might have heard the DUF1220 hypothesis, it goes something like this: DUF1220 is a copy number variant poorly tagged by arrays, and thus would not be captured well by…
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