The fourth edition of the sourcebook, "Reinventing Quality," contains descriptions of innovative activities designed to assure and enhance the quality of services to persons with developmental disabilities. The programs profiled are those seen as: systematic efforts to improve the quality of services to persons with developmental disabilities, containing elements that may be replicable elsewhere, likely to be of broad interest, and not redundant of other programs described. Programs include efforts to support the redefinition, assessment, and/or enhancement of quality in community services. The programs are subsumed under the following broad categories: statewide information and evaluation systems, service agency development, system-wide quality enhancement, values infusion, consumer and citizen monitoring, community relationship building, technical assistance, personnel training and professional development, advocacy training and support for individuals and families, best practices, and quality assurance in Medicaid Community Supported Living Arrangements programs. Direct service programs are not included. A paper by Clarence J. Sundram titled "Quality Assurance in an Era of Consumer Empowerment and Choice" introduces the sourcebook. (Contains 37 references.) (JDD)