The Family Development Research Program was distinctive in its omnibus conceptualization of program, providing a full complement of education, nutrition, health and safety, and human service resources to 108 families from the prenatal period of their children until the children reached elementary school age. All families had an income of less than $5,000 per year. The majority of mothers were black and single parent heads of households, and all mothers had less than a high school education and a history of either semiskilled work or no work. Their mean age was 18 years. The intervention was designed to support parent strategies which enhanced the development of the child long after intervention ceased. Weekly contact with mothers and other family members in the home of each child was the key intervention component. Home visitors were employed to assist each family with issues of child rearing, family relations, employment, and community functioning. Findings of a longitudinal follow-up survey 10 years after the program indicated that it had clearly had a positive impact on participating children and families, with its strongest effects in the domain of social deviance and functioning in the community. (RH)