The 987 subjects were selected from a sample of 2,958 black children whose mothers participated in the Collaborative Perinatal Project at Pennsylvania Hospital between 1959 and 1962. Data were collected prospectively during each child's first 7 years. School and police department data were collected retrospectively between 1978 and 1980. Variables describing the mother included prenatal health, pregnancy and delivery complications, and socioeconomic status at the time of the project registration. Child variables included birth order, physical development and laterality (hand, eye, and foot preferences) at age 7, family constellation at age 7, socioeconomic status at age 7, verbal intelligence, spatial intelligence, achievement, and number of offenses. This manual presents codes for 200 variables. (Author abstract modified)