A Longitudinal Study of Adolescent Growth reports the findings of a longitudinal study of the growth of 200 schoolboys and 100 schoolgirls through the course of adolescence. As well as height and weight, about a dozen other physical measures were studied or related to each other and to the staging of sexual characteristics. These values are analysed according to both the chronological age and age based on a common pubertal characteristic of peak height velocity. The range of magnitude and timing of pubertal events is described and compared for boys and girls. These recent data are compared with previous European and North American longitudinal studies, notably those of Tanner conducted over 20 years ago. In addition new information is provided which contrasts growth of two large cohorts of boys in different geographical and social settings, and compares the growth patterns of thin and exogenously obese subjects and of early and later maturers.

This groundbreaking book provides students and researchers with a unique overview of the longitudinal study of the development of young people from the ages of 12 to 25. It offers a comprehensive introduction into the multiple theories on the development of the self, personal relationships and psychopathology in adolescence, alongside a non-statistical overview of the many longitudinal models used to study development. The book includes key topics such as the development of the self, adolescent identity and personality; the development of parent-adolescent relationships; friendships and the understanding of others; and the development of psychosocial problems such as anxiety, depression, delinquency, aggression, and substance use. Meeus highlights multiple findings showing how these processes are integrated and identifies eight fundamental patterns of adolescent development to help determine why most adolescents develop into mature and organized individuals towards the end of this life stage, whilst a substantial minority show an inability to mature. It is essential reading for graduate students and researchers in adolescent development and anyone seeking to use longitudinal research methodology in the social and behavioral sciences.

Adolescence is one of the most fascinating and complex transitions in the human life span. Its breathtaking pace of growth and change is second only to that of infancy. Over the last two decades, the research base in the field of adolescence has had its own growth spurt. New studies have provided fresh insights while theoretical assumptions have changed and matured. This summary of an important 1998 workshop reviews key findings and addresses the most pressing research challenges.

Adolescenceâ€"beginning with the onset of puberty and ending in the mid-20sâ€"is a critical period of development during which key areas of the brain mature and develop. These changes in brain structure, function, and connectivity mark adolescence as a period of opportunity to discover new vistas, to form relationships with peers and adults, and to explore one's developing identity. It is also a period of resilience that can ameliorate childhood setbacks and set the stage for a thriving trajectory over the life course. Because adolescents comprise nearly one-fourth of the entire U.S. population, the nation needs policies and practices that will better leverage these developmental opportunities to harness the promise of adolescenceâ€"rather than focusing myopically on containing its risks. This report examines the neurobiological and socio-behavioral science of adolescent development and outlines how this knowledge can be applied, both to promote adolescent well-being, resilience, and development, and to rectify structural barriers and inequalities in opportunity, enabling all adolescents to flourish.

In Massachusetts, a 12-year-old girl delivering newspapers is killed when a car strikes her bicycle. In Los Angeles, a 14-year-old boy repeatedly falls asleep in class, exhausted from his evening job. Although children and adolescents may benefit from working, there may also be negative social effects and sometimes danger in their jobs. Protecting Youth at Work looks at what is known about work done by children and adolescents and the effects of that work on their physical and emotional health and social functioning. The committee recommends specific initiatives for legislators, regulators, researchers, and employers. This book provides historical perspective on working children and adolescents in America and explores the framework of child labor laws that govern that work. The committee presents a wide range of data and analysis on the scope of youth employment, factors that put children and adolescents at risk in the workplace, and the positive and negative effects of employment, including data on educational attainment and lifestyle choices. Protecting Youth at Work also includes discussions of special issues for minority and disadvantaged youth, young workers in agriculture, and children who work in family-owned businesses.

More children born today will survive to adulthood than at any time in history. It is now time to emphasize health and development in middle childhood and adolescence--developmental phases that are critical to health in adulthood and the next generation. Child and Adolescent Health and Development explores the benefits that accrue from sustained and targeted interventions across the first two decades of life. The volume outlines the investment case for effective, costed, and scalable interventions for low-resource settings, emphasizing the cross-sectoral role of education. This evidence base can guide policy makers in prioritizing actions to promote survival, health, cognition, and physical growth throughout childhood and adolescence.

Data generated from longitudinal studies allow researchers to better understand how context and experience interact with stable characteristics of the developing person over time. This book summarizes a landmark longitudinal study of 200 children, from the ages of 3 to 23. The Munich Longitudinal Study on the Ontogenesis of Individual Competencies (LOGIC) examined the development of individual differences over time and whether it is possible to predict later competencies from earlier ones. Offering a snapshot of theory and data on personality, social, motor, moral, and cognitive development, the contributors help us understand which individual differences can and cannot be altered through schooling and other experiences and how differences seen in the earliest stages are later reflected in adulthood. The results provide valuable insight into the strengths and limitations of early prediction of individual differences. This is the second volume to review the wealth of data generated by the study. The first volume (Weinert and Schneider, 1999) traced development from ages 3 to 12. This volume continues the story, integrating these early findings with the results from adolescence and young adulthood. Each of the chapters provides an overview of current research and addresses how the data help us understand the presence and developmental effects of individual differences. Among the findings are results on: The relative stability of cognitive competencies The long term effects of shyness and aggression The relation between moral understanding and action, and The role of education in the development or maintenance of performance differences. Intended for researchers and advanced students in developmental, educational, personality, social, and cognitive psychology, this book will also appeal to educators, especially the chapters that focus on literacy development, educational context, scientific reasoning and mathematical reasoning.