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There are different reasons why a person may act aggressively towards other human beings. The person may act this way because of his culture or the way he was brought up in society. The person does not, however, act this way based on instinct alone. Aggression i ....

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.... On the other hand, a father may tell his young son to beat up the school bully who is picking on him. As a result, the boy is taught to deal with the situation by using violence. In order for an individual to display aggression, it must be driven by an instinct interacting with that person's surroundings. McDougall defines the word instinct as “an inherited or innate psycho-physical disposition which determines its possessor to perceive, and to pay attention to, objects of a certain class, to experience an emotional excitement of a particular quality upon perceiving such an object, and to act in regard to its particular manner, or, at least, to ....