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robert faris, the co-author of the study, and rachel simmons, the author of the book "odd girl out."mbat, it kind of defies conventional wisdom. >> a lot of these aggressive behaviors are rooted in the desire for status. it's about climbing these social hierarchies. kids are doing mean things to each other and sometimes in quite cold blooded fashion. they're doing it online. it can be quite strategic. it is not always emotional reactive kind of aggression that people are sort of used to -- >> so it's not necessarily something that's coming out of their home life or family life or some emotional disturbance in their head. it is actually a response to where they are in the social order and they're trying to move up by putting somebody else down or by knocking somebody else down who is a little higher up than they are. >> absolutely. we see both kinds. there are kids who have severe psychological issues and they do take it out on the vulnerable kids in school, the kids who are have violated some sort of social code. but the much more common in our research is this more tactical aggressi