Going back to Lyman Stone's tweet: in fact, national IQ’s predictiveness of GDP is often very weak within-region, i.e. within-ancestry-groups. measurement error is obviously a plausible part of this, but…
We are finally ready to share our big follow-up to the first Admixture in the Americas project from 2016. Fuerst, J., & Kirkegaard, E. O. W. (2025, December 5). Continental…
Countries (and subnational divisions within some countries) differ quite a bit in how difficult it is to obtain a driver's license. The requirements here parallel those seen for various kinds…
This paper came out a while ago, but I neglected to comment on it. You may recall 5 years ago I forwarded the verbal tilt model of certain behavioral patterns…
There are numerous intervention studies aim at improving cognitive traits. While one can aggregate these in ways that give the appearance of impact, when looked at properly they don't really…
Heiner Rindermann sent me his new review paper: Rindermann, H. (2025). Low cognitive ability estimates in developing countries: A statistical analysis of their credibility. Human Evolution, 40(3–4), 257–284. https://doi.org/10.14673/HE2025341159, Developing countries…
You may have seen posts like this: Two explanations are commonly offered: Phones/computers got suddenly more addictive than before (Tiktok-era) COVID was bad for learning. Let's start with the second.…
There's a new genetic analysis of intelligence out: Chen, H., Liao, Y., Tang, L., Wei, X., Li, T., & Chen, W. (2025). Multivariate genome-wide analysis reveals shared genetic architecture and…
There is a recurrent feature of the immigration debate that goes like this: Emil: Look at how negative the fiscal contributions of 3rd world migrants are. People: Heh, that's nice,…
Chris Rufo wasn't happy with the recent American experience with the Somalians scamming the welfare state and wrote about how one should take into account "which national populations" people wish…