Gender and brain... Beware of speculation elevated to the status of facts!

"Then consider female ambition. In the 50s women appeared to have fewer ambitions beyond the confines of the home. When they got married, they quit their jobs. But as the barriers have come down, women have stampeded into the workplace, they've stampeded into previously male domains and they've worked hard to succeed there and they have succeeded there despite often having to put up with family unfriendly workplace policies and exhausting second shift of child care and house work, less pay than their counterparts, unconscious discrimination and in some cases work environments that are openly hostile to women.

Now this extraordinary social change in women's ambitions has presumably taken place in the absence of any such remarkable changes in their hardwiring."

Cordelia Fine