Environment and how people were raised plays a major role. Aggression functions in a human being from early childhood. Competition for toys, playing indians and cowboys, playing with toy weapons, hitting another. It is a conflict between love and hate and varies in intensity from one child to another. This instinct should be resolved by adulthood, but in families where children grow up witnessing violence and aggression they are more likely to believe that such hostility is acceptable. Childhood aggression can probably best predict future disfunctions.
The social learning theory is another approach. It asserts that aggression is learned and maintained through operant conditioning, which means reinforcing and rewarding aggressive behavior.
The social learning theory is another approach. It asserts that aggression is learned and maintained through operant conditioning, which means reinforcing and rewarding aggressive behavior.