If the receiver has forewarning of a persuasive effort or the message is outside the receiver's latitude of acceptance, the persuasion will be less effective. As other things can be learned by operant condition, classical condition, and observational learning, new attitudes can also be learned in these ways. Lean Festinger's cognitive dissonance theory explained that when a person's behavior is inconsistent with an attitude, he changes the attitude, to relieve the state of cognitive dissonance. Daryl Bem's self-perception theory explained that people form and change their attitudes by observing their own behavior and making attributions. People make attributions most often when they notice something unusual or when an event or behavior has person consequences for them.
Aggression is any action taken with the intent to do personal harm or physical damage.
It can be categorized as impulsive, instrumental, hostile, or socially-sanctioned. Perhaps, all of the above. Situational factors determine whether or not aggression actually takes place. Once a person is in an aroused state, aggression is more likely to occur if the person interprets the cause of frustration to be intentional or direct provocation or additional provocations are made. Aggression will be less likely, if the person realizes that sort of behavior may not be in his best interest.