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.

• Front Matter
• New Research on Adolescent Development and the Biology of Puberty
• References
• Appendix: Workshop Agenda