Not as good as some, but interesting to me. 

http://www.japantimes.co.jp/cgi-bin/getarticle.pl5?rc20040801a1.htm

I particularly like this:

"So why are women not equally represented in the workforce? Perhaps
it's because they are smarter. Who is it that is being shoved and
crammed into a tight, hot train in the morning? Who is working
60-plus-hour weeks without overtime pay? Who is so exhausted from a
day's work that all they can do when they get home is pass out in
front of the TV with a beer in hand? Of course there are exceptions,
but it's mostly men."

Yes... it's intelligence that keeps women from having wage and
lifestyle equality.

John W.