Psychology refers to the study of the human mind. It is concerned with functioning of human psyche and how a person reacts when subjected to different circumstances. Essentially the study of the behavior of human mind under various situations is studied under psychology. The extensive content of this book provides the readers with a thorough understanding of the subject of psychology. From theories to research to practical applications, case studies related to all contemporary topics of relevance to this field have been included herein. It is a complete source of knowledge on the present status of this important field.