Examined 3- and 4-year-olds with regard to their abilities in recognizing differences between certain speech sounds and their performance in imitating and spontaneously generating the same sounds in familiar words. Results are related to a theory of phonemic development in children. (Author/SDH)

Presents two experiments which measured latencies in a picture-word interference task to assess semantic processing. Results suggest that picture-word interference is partly semantically based and that children and adults experience an equivalent amount of semantic interference. (Author/SDH)

Investigated whether there exists a stage of development at which "imagery-inducing motor activity" ceases to be facilitative relative to the effectiveness of alternative kinds of associative-learning strategies. (Author/SDH)

Investigated the child-holding patterns represented in Western art by examining the mother-and-child paintings and drawings of 34 major European artists. Works of art depicting men holding young children are examined for comparison. (Author/SDH)

Investigated the possibility that evidence of frequency discrimination might be found when the experimental procedures involved the conjugate reinforcement of nonnutritive sucking. (SDH)

Investigated the relationship between psychometrically defined brightness and cognitive development within Piaget's stage theory. Subjects were fifth- and seventh-grade boys. (SDH)

Measured the effect of schooling on cognitive skills by comparing the performance of 230, 6-13-year-old Hausa school children on a variety of cognitive tasks to that of 175 like-aged Hausa children who did not attend school. (Author/SDH)

In order to investigate the relationship between the development of justice (moral) conceptions and the development of mathematical and physical (logical) conceptions, 50 children(ages 4-8) were administered a "positive justice" interview and five of Piaget's concrete-operational mathematical and physical tasks. (Author/CS)