Gender and competitiveness

I take the view that there are VERY minor differences between men and women at birth, but by the age of adulthood, we have become very different because of gendering. On a 'natural
level, therefore, I would argue that there is greater difference within the groups over a particular behavioural trait than there is between the groups.

I was therefore quite interested in this Freakonomics post which compared competitiveness as it related to gender in a traditional patriarchy (the Maasai in Tanzania) with the nearest equivalent they could find to a matriarchy(the Khasi - a matrilinial society in India).

The result? Competitiveness would seem to be a social construct rather than anything innate.