This sourcebook delves into the way the clock and the calendar structure the lives of adolescents, their families, and their peer groups. The authors use a variety of research methods, including time sampling and ethnography, to examine distinct patterns of adolescent behavior and emotions across the school day, on weekdays and weekends, and during the school year versus during the summer.

Their research shows some of the forces that give rise to the temporal rhythms in adolescents' lives, including physiological, family, and community processes. Their findings also uncover the role of temporal patterns in shaping parent-child relations, peer interactions, and problem behavior in adolescence.

Finally, the volume emphasizes that community planners, schools, youth leaders, and others charged with organizing the contexts in which adolescents develop need to understand these rhythms to effectively meet the needs of adolescents.

This is the 82nd issue of the quarterly journal New Directions for Child and Adolescent Development.