There is a lot of debate about immigration. While it is relatively easy to find crime rates by various immigrants by country of origin, these don't directly tell you whether…
It is commonly said that heritability is a population level statistic that doesn't apply to individuals. For instance, here's Robert Plomin et al's textbook Behavioral Genetics (2017, 7th edition), the…
When I talk science to non-scientists, I often get questions about how to interpret sizes of correlations or other metrics. While one can give rough guidelines invariant of the topic…
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…
In our third installment of our new work in this issue of Mankind Quarterly, we're branching off into political science: Jensen, S., & Kirkegaard, E. O. W. (2023). Who Believes…
Consider the following quote: Sociology has recently been subject to a severe critique by Alvin Gouldner (1970), who has repeated and sought to document the charge that the theoretical orientations…
There is a movement on Wikipedia, and elsewhere, to use a simplified version of English. This is mainly achieved through the limitation of which words can appear. The chief goal…
There is this claim sometimes seen when discussing highly gifted people. One interested reader emailed me to ask where it was that Arthur Jensen made this claim: Anyway, what I…
We can read in many outlets that the reason autism is increasing in prevalence is that clinicians are becoming more aware of it. The idea being that autism was already…
George Francis and I have a new exciting study out, the formal and finalized version of George Francis' 2022 blogpost: Francis, G., & Kirkegaard, E. O. W. (2023). Intelligence and…