Cold winters theory: a summary of the evidence and replies to objections
Cold winters theory gets at bad name, even from fellow hereditarians. In fact, the article about it was deleted from Wikipedia too. In my opinion that's because they are not…
The origins of cold winters theory
Richard Lynn famously spent a few decades collecting data on human intelligence around the world. Eventually, he was able to generate world maps of average intelligence levels by nations and…
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,…
East Asian ability tilt and ideographic written language
https://twitter.com/whyvert/status/1392623731835506691 I have not, but Lynn has noted that East Asians have a relative advantage in visual-spatial ability, and that's their written language, possibly some gene-culture co-evolution. One study shows…
Evolution and imperfect mediators
Skoyles, J. R. (1999). Human evolution expanded brains to increase expertise capacity, not IQ. Psycoloquy, 10(002). Chicago Skoyles is arguing a rather implausible claim: Why do modern humans have larger…
Battle of the sexes: island survival edition
I don't know of any scientific studies, but there's been a bunch of shows where they put teams of women and men on islands and had them try to survive…
Trivers-Willard in humans?
In evolutionary biology, there is a hypothesis about sex ratios: Trivers-Williard hypothesis. It has been noted that males have higher dispersion in their fertility than females have, a finding that…
Cold winter theory in non-human animals
Disclaimer: I did not read Rushton's seminal book on the topic. I was only first recently able to obtain a complete electronic copy (i.e. not abridged version). I did in…
Comments on Marty Nemko’s “12 Predictions for 2050”
A reader asked me to comment on the predictions/musings by Marty Nemko at his blog. I had never heard of him before, but he's some kind of coach, radio host…
Review: Race (John Baker)
https://www.goodreads.com/book/show/875481.Race http://gen.lib.rus.ec/book/index.php?md5=5624936a816b96dd3e6a4af6808ee69b I had seen references to this book in a number of places which got me curious. I am somewhat hesitant to read older books since I know much…
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