EDWARD C. RATLEDGE is Director of Urban Policy Research at the College of Urban Affairs and Public Policy, Newark, Delaware. Involved in systems design (software engineering and data base design) for 20 years, his expertise ranges from micro-base systems to high end, large scale main frames leading to applications in the fields of criminal justice, natural and human resources, and geographic information systems. He has been widely published in econometric journals as well as applied research journals. They include: American Economic Review, Review of Economics and Statistics, Advances in Alcohol and Substance Abuse, and the Journal of Systems Management, among others.JOAN E. JACOBY is Executive Director of the Jefferson Institute for Justice Studies, Washington, D.C. She is the author of The American Prosecutor: A Search for Identity, and has contributed chapters to other books including: Theory and Research in Criminal Justice: Current Perspectives, Preventing Crime, The Prosecutor, and The Coming of Age of Information Technology. Specializing in criminal justice systems and procedures for the past 20 years, she also has authored or co-authored numerous reports including: Caseweighting Systems for Prosecutors, Basic Issues in Prosecution and Public Defender Performance, and Prosecutorial Decisionmaking and has been published in the Journal of Criminal Law and Criminology.