Developmental psychology is the scientific study of why and how human beings change and develop throughout their life. It broadly examines change across three categories, namely, physical, cognitive and social-emotional development. This field explains how an individual's thinking, feeling and behavior change over time. It tries to explain the effects of nature and nurture on human development. Some major areas of research in this field are cognitive development, physical development, memory development and social and emotional development. This domain is an umbrella discipline that includes a wide range of fields, such as educational psychology, forensic psychology, child development, cognitive psychology, ecological psychology and cultural psychology. This book attempts to understand the multiple branches that fall under the discipline of developmental psychology and how such concepts have practical ramifications. The case studies included in this book will serve as an excellent guide to develop a comprehensive understanding of this field. Those in search of information to further their knowledge will be greatly assisted by this book.