The worldwide prison rates mystery
I regret to inform you that they are at it again. That is, blocking me on Twitter for the wrong ideas. It started benignly, as it usually does, with a…
How many people get arrested?
A friend of mine sent me this article for evaluation. Basically he thought the findings were too wild to be believed: Brame, R., Bushway, S. D., Paternoster, R., & Turner,…
African IQs using only age heaping data
Age heaping is a fascinating method. I blogged about it back in 2015, hoping that someone would take up the idea of fusing this literature from historical economics with modern…
Buj (1981) is probably fraudulent and shouldn’t be used
There's an odd old paper sometimes mentioned and even worse, used for calculations: Buj, Vinko. (1981). Average IQ values in various European countries. Personality and Individual Differences, 2(2), 168-169. Paper…
The Mensa fallacy
Back in 2015 at ISIR, a researcher gave a presentation about mental illness and intelligence, reporting it was elevated at high intelligence levels, along with all kinds of other issues.…
African IQs without African IQs: it’s complicated
Noah Carl has recently written about the African IQs debate, basically defending the usual numbers. Aside from arguing that the data are good enough to use, though obviously not perfect,…
Book review: At Our Wits’ End (Ed Dutton, Michael Woodley, 2018)
I try to read many different kinds of books each year. Outside of my own fields, I try to consume high quality popular science, but mainly read academic books within…
Italian north-south genetic differences confirmed
Davide Piffer and Richard Lynn has a new study out: Piffer, D., & Lynn, R. (2022). In Italy, North-South Differences in Student Performance Are Mirrored by Differences in Polygenic Scores…
How unreal is long-COVID?
Research funding for COVID is amazing. A lot of academics got and continue to get grants promising to do research on COVID. Unfortunately, COVID kinda died out recently and the…
New study out: Admixture and Social Status in Chile
The new June issue of Mankind Quarterly is out, and naturally it features a paper of mine: Kirkegaard, E. O. W. (2022). Admixture and Social Status in Chile. Mankind Quarterly,…
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