We do see it in related fields. Women comprise at least 50% of medicine, but they are not evenly distributed like men. Men are disproportionately surgeons, and women are disproportionately gynecologists and pediatricians. Similar distributions occur in actual STEM fields.
As I said in my other post, things-vs-people explains all of this data, but the sexism/oppression hypothesis does not. It's not a matter of cognitive ability, but it is a matter of affinity.