[zozbot123]

Girls certainly do seem to care more about appearing caring and compassionate than the average guy would want to (in contrast, a 'male' upbringing would tend to phrase pro-social norms in terms of things like fairness, a strong character and the inner pride of pursuing a virtuous life), but to imagine that they're more pro-social in general seems like a bit of a stretch! (I mean, it's not like girls can't be just as mean and spiteful to others when they have the inclination and opportunity to be.)