Theorizing on aggression catharsis that follows psychoanalytic or ethological reasoning formulated in the frustration–aggression hypothesis assumes a basic linear cause–effect model. According to this model, provocation to aggression creates a state of arousal that motivates aggression, which in turn lowers arousal and diminishes the probability of further violence. Evidence from psychophysiological research indicates that under some conditions, aggression does produce decreased arousal when the latter is quantified in terms of cardiovascular activity. Data regarding the effects of aggression on the other indices of autonomic recovery are ambiguous. Aggression does not promote cardiovascular recovery in the following conditions: when the target possesses a higher social status than the attacker, when aggression is a manifestly inappropriate response in a given situation, and when the individual is predisposed to react to aggression with the feelings of guilt. The notion of catharsis has not been confirmed, that reductions in aggression following aggression, insofar as they have been demonstrated, might be more parsimoniously explained in terms of active inhibition, and that in the absence of such inhibitions the expression of aggression increases the likelihood of further such behavior.