They're socialized to think they need to Sweep In. It is kind of too bad we can't figure out how much of the whole male/female behavior thing is biological. I'm guessing hormonal balances do do a lot to influence behavior, but a lot of it also has to be cultural. Not that that excuses the whole "Why, hello, ladies, are you doing something that involves electricity and/or manual labor and/or the sciences and/or etc.?" bit.

I read an article yesterday where some psychiatrist was like "Clearly, this child (born male, lost his phallus to a circumcision error, raised female) is not displaying proper femininity because they want to buy toy guns and don't like dresses and are displeased with the whole 'puberty = sudden breasts' bit." And went pffffft. Because by that definition, I'm male. What planet do social scientists live on, again?