Aggression: approaches to aggression, television and violence. Intentional behavior aimed at causing physical or psychological pain. Two dimensions of classification: type of pain, goal of pain. Physical aggression: aggression inflicting physical pain. Verbal or relational aggression: saying or doing psychologically hurtful things. Aggressive behavior that: stems from feelings of anger, has the goal of inflicting pain. Think about a time when you hurt someone else: do(cid:374)"t ha(cid:448)e to tell a(cid:374)(cid:455)o(cid:374)e about it. Chemical influence: the booze made me do it. I did what anyone else would: violence in the media. Basic theoretical premise: aggression is adaptive and has survival value. Earliest evidence: animals can be bred for aggression, twin studies find high heritability for aggression. Depends on context: sometimes leads to withdrawal / fear, relative social status matters. Pfc may be the regulator of aggressive impulses: generally involved in planning and behavioral regulation.