Women On Top

There are less large companies which women owns in Japan. Actually, I haven't seen any senior women managers in some Japanese companies which I've worked. In addition, Japan is the 98th county of the percentage of women in the congress. It's worst in G8. However, Margaret Heffernan said there are less CEO or owners of the large global companies in USA and the world.
I don't have any idea how more women are efficient for societies because it'd be hard for me to adjust if my wife works. My both parents have work but both work at home. There are less situations.