Toddlers in foster care, exposed prenatally to cocaine, were assessed for development, temperament, play behaviors, and adaptive and maladaptive behaviors. Compared to nonexposed toddlers, these toddlers possessed more risk factors at birth and experienced more illnesses after birth; scored lower on conceptual development and higher on expression…

Explored interrelationships among day-care experience, temperament, and preschoolers' social behaviors in a peer play laboratory. Found that sex predicted both aggressive and prosocial behaviors, and daycare inhibited socialization for some children. Findings suggest that variables of temperament and day-care experience are important to consider…