What is nature and role of human behavior?

Human behavior is a challenging in every aspects. It not only deals to with the changing human nature but also a different behavior with respect to time. The scope of human behavior is very huge. It has very large area of research. It can have wide impact on people and society.

The nature of understanding human behavior is not an easy topic for the discussion. Any one who is interested has to go through many research on understanding the brain functionality together with the model of modeling such behavior.