This title is a must-read for anyone interested in deepening their understanding of the behaviours of children and adolescents. It focuses on measurement issues related to the subjective well-being of children and adolescents as opposed to current objective measurements. The volume contains eight chapters that represent a significant advancement in our understanding of life satisfaction in specific age groups, behavioural context, and cultures. The first chapter provides a synthesis of assessment research directed at children and youth. The subsequent chapters offer an in-depth look at subpopulations of youth and specific behaviours. Together the chapters demonstrate the importance of considering the role of life satisfaction across age groups and situations. This volume will be of interest to researchers in government and academia, social psychologists, those working in the prevention sciences, and others who focus on assessing the quality of life and well-being of children and adolescents.