This final report details the activities of the Charlotte Circle Outreach, a program designed to provide technical assistance and training to early intervention programs offering services to infants and young children with substantial disabilities, ages birth through two years. This mission was accomplished through cooperative planning with Individuals with Disabilities Education Act Part H Coordinators in five participating states (Kentucky, Maryland, Michigan, North Carolina, and Pennsylvania) and one territory (U.S. Virgin Islands) and the development of replication sites in these areas. Intervention efforts were based on the Charlotte Circle Project, an early intervention model that emphasizes changing the child's and caregiver's vulnerability to environmental effects and enhancing the quality of interaction between children with disabilities and their caregivers. The goal of the Charlotte Circle Project efforts has been to strengthen the reciprocal nature of mutually satisfying social interactions, including increasing the social responsiveness of children and increasing caregivers' ability to read and respond to their children's cues. Partnership with parents and parent choice in designing the intervention program have been hallmarks of this efforts. Evaluation efforts found that replication sites were effective in implementing the social reciprocity model. Further, evaluation efforts indicate that children and families have benefited from services and view services positively. (CR)