The science of mind and behavior is referred to as psychology. It aims to understand conscious and unconscious processes along with feeling and thought. It aims to understand the mental functions that an individual exhibits. These mental processes are perception, attention, cognition and intelligence. It also tries to understand the properties of brains and the multiple phenomena associated to those properties. Psychology aims to study and analyze the influence of the mental processes on the social and individual behavior. It also delves into the biological and physiological processes which impact cognitive functions and related behavior. The important areas that the domain attempts to study are unconscious mind, personality, motivation, development and genes, and environment. It finds applications in the areas of mental testing, education, and military. The book covers in detail some of the existent theories and innovative concepts related to the discipline. Some of the topics that have refined psychology have also been covered herein. This book, with its detailed analyses and data, will prove immensely beneficial to professionals and students involved in this area at various levels.