We examined the impact of parenting behaviors on preschool children's social development in low-income families from three cultural groups: European American (n = 286), African American (n = 399), and Hispanic American (n = 164) using Spanish as the primary language in the home. Observed parenting behaviors of stimulation, responsivity, and acceptance of the child in European American and African American families showed positive impacts on children's social development with notable exceptions discussed. Corporal punishment had a negative impact on children's social development. With the exception of corporal punishment, none of the parenting behaviors predicted social development outcomes for Hispanic children.