The Flynn effect and the co-occurrence model
Jonathan Egeland has an excellent recent paper on the Flynn effect and its paradoxes: Egeland, J. (2022). The ups and downs of intelligence: The co-occurrence model and its associated research…
European polygenic scores predict Chinese provincial differences too
If you haven't seen my new article about the new David Reich lab ancient genomes results in Aporia magazine yet, head over there now: Overwhelming evidence of recent evolution in…
Overwhelming evidence of recent evolution in West Eurasians
David Reich's team has a new kickass preprint out: Akbari, A., Barton, A. R., Gazal, S., Li, Z., Kariminejad, M., Perry, A., ... & Reich, D. (2024). Pervasive findings of…
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.…
Conspiracies and their believers
Summary Conspiracy theory has negative connotations of falseness, implausiblity or irrationality, but we also know many conspiracies are true, ranging from the ordinary criminal case (conspiracy to commit murder) to…
Norwegian cognitive inequality and its social consequences
There's a new kickass study based on Norwegian register data: Bratsberg, B., Fjell, A. M. M., Rogeberg, O. J., Skirbekk, V. F., & Walhovd, K. B. (2024). Differences in early…
Tattoos and piercings, what do they tell you about someone?
Richard Hanania and I recently wrote on Twitter/X: Naturally, my reply and his general level of trolling on the platform attracted a lot of angry, dumb replies from people with…
The general disease (“d”) factor and mutational load
Last year, this study was published: Brandt, V., Zhang, Y., Carr, H., Golm, D., Correll, C. U., Arrondo, G., ... & Cortese, S. (2023). First evidence of a general disease…
The ethnic meritocracy in the United Kingdom
Some of my colleagues have a new paper out: Te Nijenhuis, J., Pesta, B. J., & Fuerst, J. G. R. (n.d.). General mental ability testing and adverse impact in the…
The value of intelligence
There are many studies that report correlations between intelligence -- however measured -- and economic outcomes, mainly (self-reported) income. This is however somewhat abstract since correlations are unitless. They don't…
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