I think the article about the young male elephants that went on a killing spree, brutally ripping apart entire hurds, their own family, siblings, infants, in an uncontrollable rage is relevant here. Link anyone? Of course this example further shows that they are indeed quite similar to us in basic psychology.
The rampages you're talking about have been linked to elephant culling. Elephants grow up in structured societies, where older elephants teach younger ones proper behavior. Because of culling (a sterile word, if ever there was one!) and the elimination of older elephants, younger members of the herd (1) have not had the chance to learn proper behavior, and (2) suffer traumatic grief early in life. Hence the rampages. Very humanlike, indeed. (Lord of the Flies, anyone?)
