I read recently (my apologies, I can’t find the link) that in every country where we have reliable testing data, a consistent pattern emerges: girls tend to do slightly better on reading/writing tasks than mathematical tasks, and boys slightly better on mathematical than language-tasks.
This is an interesting dynamic because it creates different “optimal” outcomes depending on what you are trying to optimize for.
If you optimize for individual achievement–that is, get each student to go into the field where they, personally, can do the best–the vast majority of girls will go into language-related fields and the vast majority of boys will go into math-based fields. This leaves us with a strongly gender-divided workforce.
But if we optimize instead for getting talented people into a particular field, the gender divide would be narrower. Most smart students are good at both math and language, and could excel in either domain. You could easily have a case where the best mathematician in a class is even more talented in language, or where the most verbally talented person is even more talented at mathematical tasks (but not both at once).
If we let people chose the careers that best suit them, some fields may end up sub-optimally filled because talented people go elsewhere. If we push people into particular fields, some people will end up sub-optimally employed, because they could have done a better job elsewhere.
Relatedly, we find that people show more gendered job preferences in developed countries, and less gendered preferences in undeveloped countries. In Norway, women show a pretty strong preference, on average, for careers involving people or language skills, while in the third world, they show a stronger preference for “masculine” jobs involving math, science, or technical skills. This finding is potentially explained by different countries offering different job opportunities. In Norway, there are lots of cushy jobs, and people feel comfortable pursuing whatever makes them happy or they’re good at. In the third world, technical skills are valued and thus these jobs pay well and people strive to get them.
People often ascribe the gender balance in different jobs to nefarious social forces (ie, sexism,) but it is possible that they are an entirely mundane side effect of people just having the wealth and opportunity to pursue careers in the things they are best at.