I had no intent to discount what you said here. Though that is in the specific, rather than the general. One of the big arguments in SCA was the reality of women fighters in the ages represented. The women proved their case!
It is just that I see the general nature of the species and it division of labor as being a potential for the differences in PDAs. As for bonding, true, but that bonding also usually centers around shared activities, which also would make for differences in PDAs.
As basic as I can put it male/male PDAs and female/female PDA are likely to have arisen as a result of our maturation as a species.

Quote Originally Posted by Thorne View Post
I don't think you can go that far. In many primitive cultures women would hunt, supplementing the male hunters, as long as they were not pregnant or nursing. Like modern day soldiers, women could deal with the rigors of hunting just as easily as the men. The gregarious manner of women, in reality, is no different from the males bonding around the campfire, or at the local bar, after a hard day on the hunt. With the women, though, it was a more constant thing, while gathering plants and fruits, cooking, caring for the young, etc.