Indian average intelligence: not a mystery
Talking about the current thing on X often results in viral posts: The replies are full of hostility for a variety of reasons, one of them being that Taleb posted…
The mirror self-recognition test as an intelligence test among humans
Recently, there has been much talk about national IQs, again. Here's the recent significant writings: Jan. 13. Lyman Stone has a reply to my piece on within vs. between dysgenics.…
Explaining global variation in internet speed
I saw this on Twitter earlier today: The narrative seemed right, so at first I retweeted. But then I looked closer at the map and realized it couldn't be right.…
A new dataset of science knowledge by country
By coincidence I found this paper the other day: Sturgis, P., Brunton-Smith, I., Allum, N., & Fuglsang, S. (2024). Testing the cultural-invariance hypothesis: A global analysis of the relationship between…
New study: Intelligence and Group Differences in Preference for Breasts over Buttocks
George Francis and I have a new exciting study out, the formal and finalized version of George Francis' 2022 blogpost: Francis, G., & Kirkegaard, E. O. W. (2023). Intelligence and…
Eulogy for Richard Lynn (1930-2023)
Richard Lynn passed away a few days ago in his sleep. His health had been in decline for some time, so his passing was expected. Still, it offers us a…
Andrew Sullivan not allowed to tweet the wrong science
The main function of angry activist people on Twitter is to limit the discourse to within the limits they find acceptable. Since Twitter and other social media have mostly left-wing…
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…
Math scores for 2nd generation immigrants in Norway by country of origin
A reader sent me this interesting report that I had previously somehow not heard of: Rune Jørgen Sørensen, Jon Marius Iversen, Johan From, and Hans Bonesrønning. Culture and school performance:…