Male and females constitute the largest difference you could have in a species. This preprint affirms what all previous work in this space has found; if you try to minimise the cultural/enviromental differences between men and women, you maximise their biological differences.

"These sex differences were larger in countries with a higher level of women's empowerment."

"We explain this counter-intuitive finding through the indirect effect of wealth. Women's empowerment is associated with relatively high levels of national wealth and this wealth allows more students to aspire to occupations they are intrinsically interested in"

Though I think the preprint's reasoning about the influence of wealth is just bad. Especially if you try to reason that wealth and better education is causing alot of women to become nurses instead of doctors.