This reference summarizes and overviews current research on adolescence in 31 countries from around the world. The volume begins with a discussion of interdisciplinary and international perspectives on adolescence, with special attention to psychological and sociological approaches. Each of the chapters that follow considers adolescence in a particular country, and the chapters are arranged alphabetically for ease of use. To foster comparative research, each chapter shares a common format, with sections on the historical and sociodemographic background of adolescence since 1945, sociocultural patterns of rites of passage, psychological and social problem behaviors, and policy matters. Each chapter concludes with a list of current references, and the volume ends with a selected bibliography and an appendix of key researchers.