"Bullying between boys has been a concern of vice principals as long as there have been schoolyards to fight in and windows to break. But it's only been the past 15 years or so that thoughtful psychologists and child development experts, mostly women, have taken a look at the very different ways girls bully each other. Where boy bullying is hard to ignore, given how often it leads to physical aggression and outright violence, girl bullying is far more subtle and therefore easier to shrug off. Yet the effects on girls are no less devastating; and the wounds cut so deep that many women will be emotionally and socially disabled by them for the rest of their lives"