Acknowledgments.

This report builds on over a decade of research by The Alan Guttmacher Institute (AGI) and many others. It represents two years of direct research, analysis and thought by AGI staff members Patricia Donovan, senior associate for law and public policy; Jacqueline Darroch Forrest, vice president for research; Jennifer Frost, senior research associate; David J. Landry, senior research associate; and Olivia Schieffelin Nordberg, director of publications. In addition, the assistance and advice of other AGI staff were invaluable to its preparation: Daniel Daley, Beth Fredrick, Stanley K. Henshaw, Kathryn L. Kost, Cory L. Richards, Jeannie I. Rosoff and Susheela Singh. Finally, this report would not have been possible without the research assistance of Jessica W. Black and Kathryn L. Kuo, and the administrative assistance of Stefani Janicki, Joanne L. Johnson, Vanessa Kaleb, Stuart Rhoden, Marjory Ruderman and Regina Toler.

AGI is indebted to the following individuals, who reviewed the entire manuscript and made many helpful suggestions: Christine A. Bachrach, National Institute of Child Health and Human Development (NICHD); Claire Brindis, University of California-San Francisco; Arthur B. Elster, American Medical Association; Jane Johnson, Planned Parenthood Federation of America (PPFA); David Perlman, The San Francisco Chronicle; and Karen Pittman, Academy for Educational Development.

The counsel of two advisory panels also helped to shape the direction of the final report, and thanks are extended to those participants, listed here with their affiliation at the time of their participation: Christine A. Bachrach, NICHD; Jerry Bennett, Office of Population Affairs, U.S. Department of Health and Human Services (DHHS); Judy Bennett, Virginia Council of Churches; Robert Blum, University of Minnesota; Sarah Brown, Institute of Medicine; Sarah DePersio, Oklahoma State Department of Health; Joy Dryfoos, independent consultant; Floyd Garrett, Adolescent Family Center, Rush-Presbyterian, St. Luke's Medical Center; Olivia Golden, Children's Defense Fund; Debra Haffner, Sex Information and Education Council of the United States (SIECUS); Cheryl Hayes, independent consultant; Ann Hill, National Urban League; Marion Howard, Grady Memorial Hospital; Renee Jenkins, Howard University Hospital; Samuel Kessel, Maternal and Child Health Bureau, DHHS; Laura Colin Klein, Association of Junior Leagues; Lloyd Kolbe, Centers for Disease Control and Prevention (CDC); James Marks, CDC; James McCarthy, Center for Population and Family Health, Columbia University; Harriet Meyer, Ounce of Prevention Fund; Inca Mohammed, Young Women's Christian Association; Kristin Moore, Child Trends; Geri Peak, Center for Population Options (CPO); Margaret Pruitt-Clark, CPO; John Schlitt, Southern Center on Adolescent Pregnancy Prevention; Robert Selverstone, SIECUS; Jack Smith, CDC; Mary Sosa, National Education Association; Amy Sutnick-Plotch, Girls, Inc.; Trish Moylan Toruella, PPFA; Judy Wurtzel, U.S. Department of Education; Laurie S chwab Zabin, School of Hygiene and Public Health, Johns Hopkins University.

We acknowledge with gratitude colleagues in the field who provided us with special tabulations of data: Saul D. Hoffman, Kristin A. Moore, Christine W. Nord, Deborah Oakley, James L. Peterson and Koray Tanfer.

The research needed to produce this report was supported in large part by the Carnegie Corporation of New York and the Charles Stewart Mott Foundation. The Marion Cohen Memorial Foundation and the General Services Foundation helped to support its production and distribution.