[krastanov]

Certainly, that is a big part of it. But this should be carefully compared to the "background signal" in these cultures. To take it to an extreme: how certain are you that men go into STEM for reasons different than boys being told "STEM is for boys". Both young boys and young girls have that "common sense" imposed on them by our culture, so it is very unreliable to claim that any choice is unrelated to that cultural experience as a child.

[Grustaf]

Nobody says “STEM is for boys”. Maybe in the 50’s, but certainly not when I grew up in the 80’s.

[krastanov]

Maybe that is true where you are. But I have seen it first hand in parents and teachers in the US, France, and Bulgaria.

[Grustaf]

OK, if teachers tell girls that they shouldn’t do science that is a real problem. In SCandinavia they definitely don’t, quite the opposite, but women are still not as interested in these subjects as men are. So clearly that is not the main cause.