Carl Brigham on intelligence (1923): a fake quote
On various socialist and egalitarian writings as well as the academic literature, one can find attacks on intelligence testing due to the bad early guys. One common example is Carl…
Not just dysgenic outcomes, but dysgenic intentions too
I have a new study out with Ed Dutton: Kirkegaard, E. O. W. & Dutton, E. Intelligence and Anti-Natalist Intentions on Dating Sites: An Analysis of the OKCupid Dataset. In…
Personality structure problems
In hereditarian circles, there's a lot of talk about the general factor of personality (GFP). Briefly, the data shows that if you take typical Big Five (OCEAN) tests, they tend…
Ancient genomes discussion with Davide Piffer & Emil at Lake Como
As announced late August, here is the promised discussion with Davide Piffer on ancient genomics: where we are, and where we hope to go. 1 hour and 7 minutes. https://www.youtube.com/watch?v=8_XbrzSfEz4…
How to make psychology items (questions) with ChatGPT4
In the comments on my last post on measuring intelligence in online surveys, PaleoPolak asked: > It is fairly easy to make new vocabulary items for most languages using the…
Measuring intelligence online: best practices
Over the years I have been involved in quite a number of studies that measured intelligence (g) online in some way or another. Since people occasionally ask what is a…
Polygenic score validity and group differences
Probably the most common objection to studies of polygenic scores for education/intelligence for race differences is that the polygenic scores are less valid for non-European populations. For instance, here's a…
Might makes right, well, sort of
In moral philosophy, there is a theory of morality which is nearly universally used as a wrong-headed theory. It's the might makes right theory. In other words, whoever is in…
Of course it matters whether group differences are genetic in origin
It is sometimes said that as long as we accept the various group differences in society, it doesn't matter what the etiology really is. For instance, here's Richard Hanania: https://twitter.com/RichardHanania/status/1688213682998931456…
Can the X chromosome explain greater male variability? Seems not
Men vary more than women in most phenotypes we can measure, including intelligence. Inquisitive Bird has a summary of the intelligence findings here. Thöni & Volk 2021 provide a nice…
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