Babymaxxing
And so the day came, August 12, our first child joined the world: Given how great early life interventions work, I started immediately with important topics like British history: Kidding…
Do you like dogs, cats, both, or neither?
Back in March I published this study of pet preferences and human psychology: Kirkegaard, E. O. (2025). Do You Like Dogs, Cats, Both, or Neither? An Examination of Western Dating…
Proper embryo selection just landed
Today is an exciting day. First, the HHS announced a more open data policy (in the direction of my suggestions), and second and more importantly, a new company just went…
Garett Jones finishes his trilogy
In the last 10 years, economist Garett Jones has been writing a series of books, a trilogy to be exact: Jones says in the post-script: THIS IS THE FINAL BOOK…
Video: Davide Piffer and I talk about ancient genomics, polygenic scores and history
The first of many videos for paid subscribers (on Substack). Actually, this first one will be free, and some later ones may also be free (which I will also post…
The benefits of monarchy, maybe also for Jamaica
I was busy attending a wedding this weekend, so there were no posts. In the mean time, Lipton Matthews (X profile, Substack, Aporia articles) asked if he could write a…
IQ is the most predictive variable in social science*
You will often find intelligence researchers and enjoyers make claims like the following: g can be said to be the mostpowerful single predictor of overall job performance. First, no other…
What doesn’t explain the post-COVID fertility decline?
I've been writing about fertility for a while. Of recent interest is the COVID or post-COVID fertility decline. Birth Gauge compiles the most up to date TFR (total fertility rate)…
Odd sibling RDR results: is the problem measurement error in IBD?
You've probably seen the recent Scott Alexander discussion about heritability, with comments from key players and commentators in the field, but if not: Scott Alexander: Missing Heritability: Much More Than…
People overestimate the size of every minority group
Lot of studies go like this: Now, you can quibble that they used poor estimates of immigrant% that only counted first generation, or those with only foreign citizenship, or in…
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