Worldwide results for migrant outcomes
I've researched the outcomes of migrants by country of origin in many studies and posts, but now with the power of AI, I've been quickly able to compile all of…
Adult cognitive gaps in the PIAAC
For fun, I posted some results for sex differences in cognitive tests from taketest.xyz on Twitter. Replotted, they look like this: Most tests show male advantages, and only 3 show…
Interactions are generally not important in social science
Some years ago both me and Jonatan Pallesen looked into the generality of statistical interaction effects. These look like this: In real life, however, interactions are mostly not a real…
Which country do you fit in?
There are hundreds of values tests on the internet. Almost all of these are theory-based also known as made-up dimensions. These are dimensions that one could think of, make some…
Dimensions of the dating mind
A decade ago I got into my first media circus by scraping the OKCupid dating site. The site uses (or used) a novel approach of having users answer 100s of…
g-loadings of tests on taketest.xyz
Many people were asking me about the g-loadings of the tests on the site. The answer is somewhat complicated because: We don't have many people who took all the tests.…
Semen quality and intelligence
Back in the 2000s, there was some interest in semen quality and intelligence: Arden, R., Gottfredson, L. S., Miller, G., & Pierce, A. (2009). Intelligence and semen quality are positively…
Explore psychological correlations at taketest.xyz
Have just finished a neat update to the site. On the correlations page you can now see the matrix of cross-test sample sizes: You can click any of the green…
Race differences in reaction time: data from NHANES 3
Whenever race differences in cognitive ability broadly speaking are brought up, they encounter huge skeptical and emotional opposition. This is understandable, though not grounded in science. One common claim is…
Migrant performance on PISA worldwide
There are some data memes floating around like this one: In German, it shows the performance of Turks on PISA math by year and destination country. It can be seen…
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