1 Contributions and Complexities of Studying Trends in the Well-Being of Children and Youth / Mary Utne O'Brien, Roger P. Weissberg, Herbert J. Walberg, and Carol Bartels Kuster -- 2 Social Indicators as Tools of Public Policy/ Brett V. Brown and Thomas Corbett -- 3 U.S. Educational Achievement in the 20th Century: Brilliant Success and Persistent Failure / Lawrence C. Stedman -- 4 Tobacco, Alcohol, and Other Drug Use in Adolescence: Modern-Day Epidemics / Lloyd D. Johnston and Patrick M. O'Malley --5 Sexual Activity among Teenagers in the United States / Joyce C. Abma -- 6 "Trends in the Health of Children in the United States / Lorraine V. Klerman -- 7 Changing Family Circumstances / Donald J. Hernandez -- 8 Child Maltreatment: Past, Present, and Future Perspectives / Dante Cicchetti and Sheree L. Toth -- 9 Trends in the History of Child Care and Family Support: 1940-2000 / Emily D. Cahan and Juliet Bromer -- 10 Indicators of Children's Well-Being in a Community Context /Tama Leventhal and Jeanne Brooks-Gunn -- 11 Children and the Changing Media Environment: From Plato's Republic to Hillary's Village / Donald F. Roberts -- 12 Historical Overview of Children and Childhood in the United States in the 20th Century / Joseph M. Hawes and Kriste Lindenmeyer -- 13 Policy Trends Affecting Children and Youth / Brian L. Wilcox and Charles Barone.