Government family spending does not predict fertility rates, or does it
Fertility rates are terrible in every good country except for Israel. Why is that? Well, maybe we just don't spend enough money on this. Maybe it is too expensive to…
The genetics of beliefs
Nathan Cofnas wrote a great piece the other day, Beating Woke with Facts and Logic, which included this part: Beliefs Aren’t Genetically Determined Should we execute murderers? Raise taxes on…
Indian IQ in 1944
Some of you may have seen this table posted on X: Upon seeing the table, some have mistakenly concluded that the first row has British world scale IQs, but as…
New paper: Psychometric Analysis of the Multifactor General Knowledge Test
A while ago, Seb Jensen and I did this new study, and it was only released now due to technical issues: Kirkegaard, E. O. W., & Jensen, S. (2025). Psychometric…
How much should we trust medicine? Review of Medical Nihilism (Jacob Stegenga)
There's a few main types of broad-side science criticism: Lowbrow religiously motivated typically focused on denial of biology (evolution) but sometimes expanding widely Verbal tilt philosophy, usually some brand of…
Book review: DNA, Race, and Reproduction (Emily Klancher Merchant (Editor), Meaghan O’Keefe (editor))
So I occasionally go out of my way to read left-wing historians, bioethicists and the like. In general, bioethicists are one of those occupations where they do the exact opposite…
Newest results in ‘deep roots’ in the Americas
I am currently collecting reader questions from paid subscribers. Ask your questions here (or email me at emilowk@proton.me). While we wait for our upcoming Admixture in the Americas 2.0 (maybe…
There is no autism epidemic, and autism is not caused by paracetamol anyway
In the latest genius move, the Trump administration has claimed that the commonly used painkiller paracetamol (Tylenol, Panadol, acetaminophen, various other names) causes autism. As we have seen however, there…
Sibling admixture regression in Mexico
A week ago, a landmark study dropped: Wang, S., Berumen, J., Vergara-Lope, A., Baca, P., Barrera, E., Rivas, F., ... & Visscher, P. M. (2025). Direct effect of genetic ancestry…
US BMI/obesity declined, but was it due to GLP-1?
In tech circles, there has recently been many people cheering for the apparent success of Ozempic-like drugs (GLP-1 agonists) in finally reducing the American obesity rate. More and more variants…
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