Investigates preschoolers' knowledge of counting principles by examining their ability to discriminate between features essential for correct counting and features typically present but unessential. Skill in executing the standard counting procedure was found to precede knowledge of the underlying principle. (Author/AS)

Sex typing among preschool children was investigated by means of a complete experimental design to test which factors maintain sex-typed behaviors, to test whether sex-typed behaviors are learned, and to reduce sex typing. The complete experimental design, it is maintained, allows investigators to focus on the consequences of sex typing rather…

This volume includes reports of five research projects of the Kansas Center for Research in Early Childhood Education: (1) Individual Differences in Newborn and Young Infants, including research with the Brazelton Neonatal Assessment Scale and laboratory studies of infant discriminative abilities; (2) Development of Social Competence, including…