Psychology is the science of human and animal behavior; it includes the application of this science to solve human problems. It is the scientific study of behavior and mental processes. It uses various scientific methods for the study. Psychology is directly related to human life. Psychology touches almost every factor of our life. As society has become progressively more complex, Psychology has assumed as increasingly important role in solving human problems. Psychology has large scope and various fields. It is useful to solve our psychological, mental, social, family, educational and adjustment problems.