ACKNOWLEDGMENTS

Many people contributed in significant ways to the preparation of this report. We received valuable comments on both the substance and presentation of material in this report from several people at the Administration for Children and Families (ACF) and Assistant Secretary for Planning and Evaluation (ASPE) of the U.S. Department of Health and Human Services. Lawrence Wolf, the current project officer for the study, and Nancye Campbell, the initial project officer for the study, carefully reviewed an earlier draft of the report and provided many useful comments, which were extremely valuable in shaping this report. In addition, Nancye Campbell and Howard Rolston from ACF, and Kelleen Kaye from ASPE, have been involved with this project from the beginning and helped shape the research questions addressed in this report.

At Mathematica Policy Research, Stuart Kerachsky, Alan Hershey, and Philip Gleason provided useful comments on the analysis and findings at various stages of the project. Tim Novak provided skillful programming support. Laura Berenson carefully edited the report, and Jennifer Baskwell provided exemplary production support.

We gratefully acknowledge these many contributions and accept sole responsibility for any errors or omissions in the report.