This set of two volumes, thoroughly revised and expanded, incorporates all the recent developments and research findings from various areas of psychology bio-psychology, physiological psychology, developmental psychology, anatomy, psychopathology, psycho and behaviour therapies, neuropsychology, health psychology and social psychology. Making scientific study of human behaviour, it offers an elaborate discussion on biological bases and developmental processes, perception and awareness, learning and forgetting, thinking and imagination, emotion and motivation, intelligence and creativity, personality and its assessment, psychopathology and mental health, social behaviour and attitudes, and psychological statistics. As the book is designed as per the university syllabus in India and elsewhere, it will be useful for students and teachers alike.