The amounts of grey matter and white matter has been found to be significantly different in the brains of men and women, but the intelligence level is generally equivalent for both genders. Men’s brains typically have about 6.5 times more grey matter — the area of the brain that processes information — than women do. Women, however, tend to have about 10 times more white matter, which is responsible for connecting information processing centers within the brain. Although men and women generally score equally on broad intelligence tests, the gender differences between grey matter and white matter might make men more likely to perform better at tasks that require local processing, such as mathematics. Women often excel at tasks that require multiple brain process connections, such as, such as those associated with language.
More about gender differences in brain processes:
"See hun? I told you there was a tiger in those bushes!"
Update: "No, hun. You can't wear the plaid shirt with the striped pants."