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…
Some days ago I posted a chart about school spending (per-pupil spending) and math test scores: Note how I didn't say this cross-sectional scatterplot proves anything about causality, but we…
One of the more obscure objections to intelligence testing is that really the tests are only on ordinal scale, and thus many of the usual statistical operations are undefined. Recall,…
I wasn't going to blog this, since I prefer not covering the same ground as others, but due to multiple requests and questions, I will cover it anyway. It's this…
Last year Marcus Feldman and Kevin Lala published one of those anti-hereditarian pieces: Lala, K. N., & Feldman, M. W. (2024). Genes, culture, and scientific racism. Proceedings of the National…
There's two exciting news today in embryo selection. The technology is finally moving forward at an appreciable rate. Maybe we are not dysgenics doomed after all. First off, Herasight --…