I've googled a bit on it, which has thrown up nothing authoritative, but a reference to women using both sides of the brain for emotion, men only one - not backed up. I believe that to be shown in the case of language.

What keeps coming to mind is the behaviour of men on the road, where there seem to be strongly emotional behaviours, that emotion being anger, or aggression, which seems to cut in pretty suddenly without any logical reason.

I think there is a tendency to equate "emotion" with the softer versions seen as feminine, rather than the fiercer emotions characteristic of testosterone.

Penny