Aggression:

deliberately hostile behaviour that is intended to cause harm, usually observed through verbal & / or physical acts.

Social Psychological Theories

Social psychological theories of aggression, e.g. social learning theory, deindividuation, cue arousal, relative deprivation.

Explanations of institutional aggression

Situational & dispositional factors

Biological explanations of aggression

The role of genetic factors. The role of neural & hormonal mechanisms; serotonin & aggression. Brain structure

Evolutionary explanations of aggression

Jealousy & infidelity; aggression in humans & animals;

Group display of aggression in humans

Convergence Theory; Emergent Norm Theory; Value added Theory. Sports crowds & lynch mobs