Worldwide results for migrant outcomes
I've researched the outcomes of migrants by country of origin in many studies and posts, but now with the power of AI, I've been quickly able to compile all of…
Migrant performance on PISA worldwide
There are some data memes floating around like this one: In German, it shows the performance of Turks on PISA math by year and destination country. It can be seen…
Tracking ancestry and social inequality using American surnames
Our big project was finally published: Van Pelt, D., & Kirkegaard, E. O. (2026). Big Data, Deep Roots: Correlating Surname Genetic Ancestry and Socioeconomic Status across Millions of Americans. Comparative…
Race and social inequality in France
France is the 4th most populous country in Europe these days (it used to be number 1 before it had early secularization). It is also quite insular when it comes…
Migration and feelings of safety in Denmark
A politician from the Social Democrats called Frederik Vad (center-left government party) posted results of a survey about how safe citizens report feeling in various areas of the country. There…
Who is gaining Danish citizenship?
The Danish constitution says: §44 (1) No alien shall be naturalized except by statute. (2) The extent of the right of aliens to become owners of real property shall be…
European women and migrants: are children the solution?
I saw this funny and one might say provocative study: Schahbasi, A., Huber, S., & Fieder, M. (2021). Factors affecting attitudes toward migrants—An evolutionary approach. American Journal of Human Biology,…
What explains the Big Pisa Decline of 2022? It’s not COVID
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.…
Population size is not important for country outcomes
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,…
Indian IQ in the USA: GSS data
Aaron has a new short piece on Indian IQ in the USA using the GSS. I decided to replicate this analysis with better methods. The GSS is somewhat of a…
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