As I have pontificated testily in the past, if there are inherent differences between boys and girls, we don’t really know what they are, and where differences between genders do exist they are small, and significantly dwarfed by the difference within a gender. In fact, as regards social behaviour, I would contend that it is impossible for us to measure this because children do not grow up in a vacuum. There are gendered messages for children to take in every single day of their lives, from the moment they are born, and unconsciously or consciously, parents, caregivers, older children, other family members all subtly reward behaviour that fits the gendered stereotype, and subtly discourage, ignore or redirect behaviour that doesn’t fit. I spend my time pontificating testily about these topics, and I’m certain that I still do this, because I grew up swimming in the patriarchy just like everybody else. It’s inescapable.
So here’s my theory for boys and girls and gender: boys and girls (and frequently even the kids who fall outside that binary) are very similar in their ability to be socially sensitive to these cues. They are very similar in their desire to please the people around them and to do what is expected of them socially, to fit into their community/pack, to please their elders/protectors, to get along with their friends. There is variability within the genders, and individuals who, for whatever reason, find this fitting in more painful than others. There are communities and families that more harshly reward gendered conformity and others that strives for more individuality in expression, but the children themselves universally try to respond to all of these subtle messages so that they can fit in with their communities and be what it is they are expected to be.
There’s a reason that social ostracism feels so life threatening after all, why our emotions come on so strongly in response to rejection, why we can feel desperate to fit in, and that’s because social rejection was life threatening when communities/family groups were literally the defense against death. It makes sense that kids would come in acutely sensitive to fitting in. They are told they have a role based on a physical characteristic, and they are told each and every day how to perform it. So they do.