"If 'brain sex' sounds like gender stereotyping, Dr. Moir says there is a twist: Brain sex doesn't always match biological sex."

"There is a continuum, and some brain circuits are 'bi-wired' she believes, thus blurring traditional gender roles. She has developed a test to determine the sex of your brain, with a list of 20 questions about how information is processed. The male brain tilts toward a sequential approach, and the female brain toward a more scattered one. The 'girl' brain is more intuitive; the 'boy' brain more logical. 'From analyzing the tests, my hypothesis is that an awful lot of girls have mixed brains, but boys not so often,' she says. 'Play fighting at school is frowned on and yet many boys fight in order to bond.'"

My brain goes arrrrggggghhhhh! Does that make me a boy or a girl or one of your mixed up boy-girls, Dr. Moir?