A group of 16 infants (ages 6 to 24 months) with Down's Syndrome (DS) were exposed to two operant learning tasks varying in control of reinforcement. Comparison with chronological and developmental age matched controls found DS subjects characterized by increasing adoption of counterproductive learning behaviors with increasing age. (Author/DB)

This overview reviews a program of interlinked cross-sectional and longitudinal investigations of the nature of cognitive development in infants and young children with Down's Syndrome. The research falls into three groupings: object concept studies, operant learning experiments, and IQ studies. Early results suggest a common learning style which…

This annual report by the Research and Clinical Center for Child Development at Hokkaido University in Sapporo, Japan contains 10 articles by Japanese and American researchers on various aspects of children's cognitive and affective development. The following articles are presented: (1) "Making the Cut: Early Schooling and Cognitive…

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…