Behavior can be “explained” by discovering its causes – those events that are responsible for its occurrence. If we can describe events that caused the behavior to occur, we have “explained” it. Human behavior is at the root of most of the world’s problems, poverty, crime, overpopulation, drug addiction, bigotry, pollution and war. Health related problems – such as cardiovascular disease, some forms of cancer, and a large number of psychosomatic illnesses - are caused, or at least aggravated by an individual’s behavior.