There are many different reason why a person may act aggressively towards other human being. The person may act this way because of his background or the way he/she was brought up in life. A person does not; act this way based on natural feeling alone. Is more like a melded, learned behavior. A human being must have both environmental and instinctual factors in order to show aggression. Some of a person's natural instincts are to desire food, reject some things, escape from danger, fight in a dangerous situations or when challenged. As well also sex desire, care for the young, control, and to accept substandard status. This combination of both instincts and environment determines a person's behavior and actions throughout life. This is based on the theory that everything human beings do would have to be learned from other human beings. Aggression must be learned as we grow. It is not just simply there from the moment of birth. A person behavior is something that is taught to him rather than being an unmanageable instinct. For example, a newborn baby is breathing because it is an uncontrolled reaction. But on the other hand, a father may tell his young son to beat up the school buly who is picking on him. As a result, the boy is dealing with the situation by using violence.
In order for a human being to display aggression, violence and anger, it must be driven by an instinct interacting with that person's surroundings. The word instinct is defined 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 perciving such an object, and to act in regard to its particular manner, or, at least, to experience an impulse to such action." This definition, explains that people have different reactions for different situations they are put in. Therefore, an individual is expected to act a