Interesting. Thanks for posting. I'm a capable, self assured female. However, I have observed a lot of the differences in male and female capability in spatial types of math - and in figuring out which way is North . . .
So, although not politically correct to say so - as poor Mr. Summers found out - well, duh!!!
I once read an article that examined the difference between males and females to follow directions to a destination. It said to never tell a female to go North on a certain road or turn West, etc. Apparently many females do not know cardinal directions when outside.
My wife is brilliant. She was president of her school's National Honor Society and got a science degree, top of her class, etc. But she can't straighten a picture hanging on the wall.
My opinion that the main biological difference between men and women is related to the child rearing focus of the later.
Men an women have different personality structure - while women tend to be more detail oriented, cautious and perceptive, men are more audacious, aggressive and innovative.Women can be great scientists when the particular subject of research requires more feminine traits like it was in the case of Maria Sklodowska (married Pierre Curie) and Rosalind Franklin (the true discoverer of DNA
In other words - it is all in testosterone :) ).
I also suspect that the normal curve for the IQ might be more dispersed for men (more extremely bright and more retarded). It would give advantage for the top science achievements.