This final report describes Project Dakota, an early intervention demonstration project serving newborns to preschoolers with developmental delay or disability in Dakota County, Minnesota, from 1983 to 1986. The first chapter describes the project model (which focuses on increasing the effectiveness of parents in fostering the child's development) and project goals. Chapter II describes characteristics of the parents and 31 children (mean age at enrollment 27.6 months) served by the project. Implementation and evaluation results are presented in Chapter III, including measures of relative participation in planning and programming by staff, parents, and community and staff role in inservice delivery and consultation. Measures of outcome are described in Chapter IV. Results include data specifying child change, including the separate effects of maturation and intervention; children's contact and interaction with peers; family needs targeted by intervention; parent satisfaction; interagency response; and program operation costs. Chapter V summarizes the implementation and outcomes of the model and concludes that the family-oriented, community-based services model was fully implemented and highly effective, successfully utilizing individualized, flexible, functional curricula and services and challenging established practice which stresses structured programming driven by developmental goals. Appendixes provide evaluation forms and data. (14 references) (DB)