Why using the dispersion of family member? That sound like a second level indicator prone to be influenced by other factors (not only sex-equality, but wealth, heat, culture, whatever in fact) I'd rather have the hunter gathere society being ask question about gender role, and compare that to a poll in a male dominated society, or in Danemark, and see how their responses mesure up. Ah, I think I see your point. That's something I'd be interested in as well. I can only assume the hunter-gatherer societies left are isolated to Central/South America now-a-days, but what do I know. Definitely a cool article. I'd like to point out that modern humans and neanderthals (along with many others in genus Homo) seemed to interbreed quite a bit when cultures met. Anyways, I thought you may be interested in this article which is about an emerging theory that certain breed of dog willingly domesticated themselves for their own benefit. Interesting stuff, all of this. :)The probelm with the study reside in the way they mesured sex-equality: