All this could make for a fascinating exploration of the differences in the mental makeup of men and women.

WSJ: Do as I Do, Not as I Say

These so-called "mirror neurons" might have given apes the mental power necessary to recognize subtle differences in hand gestures.

FORBES: Can Chimps Talk?

The differences were linked to the mental alertness required to switch between languages, which could develop skills useful in other types of thinking.

BBC: Bilingual children 'better at problem-solving skills'