This book is a simple introduction to the history and various systems of Psychology. It provides a basic understanding of major systems and theories in psychology in a comprehensive way. It covers in detail the historiecal backgrounds taking plave before the emgergence of each system. As such, it provides a better understanding about the historical emergence of status of psychology and in beginning its separation from philosophical traditions. It covers a lucid discussion with emphasis on the antecednet forces of all the important system of psychology. Besides the traditional systems, it alos includes in separate chapters a discussion on the CONGNITIVE PSYCHOLOGY, the EXISTENTIAL PSYCHOLOGY, the HUMANISTIC PSYCHOLOGY and the INTERNATIONAL PSYCHOLOGY. An overview of psychology in India has also been one of the salient features of the book. This will briefly introduce to teachers and students about what the Indian psychologists are doing.The book is an ideal text for undergraduate and post graduate course of psychology.