Fair point on the “why” issue. But there is a strong correlation, and it seems okay to draw a conclusion.

The more equal a country becomes, the more men and women differ. It goes against everything that social constructionists thought. It doesn’t just happen randomly. It seem to be repeatable, and in many cultures.

So…

Different, and less paywally sources. The abstract and results sections should have what you are looking for. (Or see my other comments).

https://science.sciencemag.org/content/362/6412/eaas9899

Nah. As nations become more equal (treating men and women equally) the gender differences get larger. Not smaller, larger. The Nordic countries who have gone farther than almost any others in the ways of making men and women equal under the law have seen the gap between choices grow.

There are biological factors at…