From LiveScience.com:
A study last year found that IQ is related to the amount of gray matter in the brain, and that intelligence does not reside in one location but is spread throughout the brain. Importantly, that research discovered that abundant gray matter in certain locations was strongly correlated to IQ.
[...]
Another investigation led by Haier and reported earlier this year found that men think more with their gray matter and women tend to rely more on white matter, the other primary type of brain tissue.
Who wants first crack at calling sexist? Someone will. Hell, someone will complain about the intelligentsia. Mr. I’m too stupid to write my own name, but I should be able to fly a plane too!
Would you accept it if you had hard data in front of you proving their theories? Admit it, you’d probably be too politically correct to believe it.
No wonder people still believe in God.