The better way to proove that women brains are different from men brains is this : try to find only ONE girl who stutters. You won't find any.
An other interresting thing (not related with brain, though) that I read in the newspaper. Ring-fingers are very sensitive to "testosterone". So men have their ring-fingers longer than their forefinger while it is the opposite way for women. If you are a guy with your forefingers longer than your ring-fingers, chances are that you're gay. If you are a girl and that your ring-finger is longer than your forefinger, chances are that you're a lesbian.
Now look at your hands...