“A team of Miami University researchers led by psychologist Amanda Diekman has come up with a different explanation. In a paper just published in the journal Psychological Science, they argue women perceive STEM careers (those in the fields of Science, Technology, Engineering and Mathematics) as largely incompatible with one of their core goals: Engaging in work that helps others.” You can read a story about this research here. The paper itself is here.
I admit to considerable skepticism about this. Women and business? Not so altruistic. Women and the law? Maybe.
Feminist Philosophers 