More COVID vaccines, less excess deaths worldwide
Back in the days of COVID, there was a lot of debate about the efficacy of the vaccines. Unfortunately, most randomized trials were cut-short or too small to look at…
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.…
German immigrant IQ is about 85 according to new study
Heiner Rindermann strikes back with a new study of immigrants in Germany: Rindermann, H., Klauk, B. & Thompson, J. (2024). Intelligence of refugees in Germany: levels, differences and possible determinants.…
“Surprisingly low IQs in developing countries”, we don’t want to know, thanks
Back in May this year, German intelligence researcher Heiner Rindermann published this study: Rindermann, H. (2024). Surprisingly low results from studies on cognitive ability in developing countries: are the results…
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…
So you’re interested in the national IQ of a country, what do you do?
You might know the following scenario: you or your ancestors migrated from a given country, or you yourself is a member of the major ethnic group of some country. At…
National “learning-adjusted years of schooling”
We've recently seen national "basic skills" and Team Economist is now back with another one: National "learning-adjusted years of schooling". We might say that national intelligence enjoys a paradoxical popularity.…
New study out: Intelligence Inequality and Income Inequality: The Missing Link
We published a new paper a few days ago: Wright, S., & Kirkegaard, E. O. W. (2023). Intelligence Inequality and Income Inequality: The Missing Link. Comparative Sociology, 22(2), 298–319. https://doi.org/10.1163/15691330-bja10077…
National intelli… basic skills!
Ludger Woessmann tells us about some dire facts: https://twitter.com/Woessmann/status/1581884461007785986 It's about their new 75 page working paper which they summarize thus: How far is the world away from ensuring that…