David M. Altschuler, Ph.D., is Principal Research Scientist at the Johns Hopkins University Institute for Policy Studies, Baltimore, MD, and Adjunct Associate Professor in Sociology.
Troy L. Armstrong, Ph.D., is Professor of Anthropology at California State University, Sacramento, and Director of the Center for Delinquency and Crime Policy Studies.
Drs. Altschuler and Armstrong are Coprincipal Investigators on OJJDP's intensive juvenile aftercare initiative.
Doris Layton MacKenzie, Ph.D., is Director of the Evaluation Research Group and Professor of Criminology and Criminal Justice at the University of Maryland, College Park. Dr. MacKenzie has provided expertise to Federal, State, and local jurisdictions on shock incarceration, corrections boot camps, corrections policy, intermediate sanctions, research methodology, and statistical analysis.