Front Matter -- Contents -- 1 Introduction -- 2 Adolescence: A Time of Opportunity and Risk -- 3 Supporting Adolescents with Social Institutions -- 4 Addressing Challenges and Promoting the Healthy Development of Adolescents -- 5 Adolescents Taking Their Place in the World -- 6 Implications for Research and Linking Research to Policy and Practice -- References -- Appendix Institute of Medicine/National Research Council Reports Relevant to Adolescence -- Other Reports from the Board on Children, Youth, and Families.