Combining theory with practical application, this seminal introduction to juvenile delinquency and juvenile justice integrates the latest research with emerging problems and trends in an overview of the field.   Now in its sixth edition, this book features new interviews and discussions with child care professionals and juvenile justice practitioners on their experiences translating theory to practice. It addresses recent changes in the characteristics of delinquents alongside changes in laws and the rise of social media and smartphones.  It includes a new chapter of international perspectives on juvenile justice and delinquency.  Incorporated throughout is consideration of the mental health and special needs of youth in the juvenile justice system, as well as at-risk and non-fault children as victims. With attention to both quantitative and qualitative findings, this clear and comprehensive text will be useful for students of criminology, criminal justice, sociology and those interested in working with at-risk youth.