This book focuses on four major research tasks related to improving system performance: developing a basis for assessing DES outcomes, identifying issues of variability in DES policy application, conducting a DES training analysis and presenting recommended changes, and developing a method for continuously monitoring DES performance. JENNIFER SUSAN SLOAN (Currently in Ph.D. Program in Public Policy, George Washington University) is a project coordinator, RAND, Washington, DC. Harry Thie (Ph.D., Business Administration, George Washington University, 1977) is a senior operations research analyst at RAND. Comprehensive training and information management interventions for more consistent application of disability policy.