Why Women Can't Do Math:

Because they're convinced they can't, apparently.

A report published Thursday in the peer-reviewed journal Science showed that women exposed to theories saying females are genetically bad at math performed far worse on math tests than women who had not been exposed to such beliefs ... The research, [researcher Steven Heine] said, shows that people believe they can overcome stereotyping and continue to try. But if they blame their genetic makeup and believe they have an innate lack of ability, they give up, he said.

This is, more generally, one of the hazards of the excessive trendiness of research in genetics and evolutionary psychology, I think. It's been abused and twisted by partisans and charlatans to justify pretty much every reactionary, nonsensical notion about sex, race, intelligence, etc. that society had so far failed to completely quash and render laughable. And when these bad idea thrive, they can sometimes be self-fulfilling.

I await the long-overdue backlash against nature, and in favor of nurture.