Critiques an earlier article by M. Frauenglass and R. Diaz reporting their study on the interaction between private speech and cognition. Argues that their interpretation fails to regard how private speech is seen to regulate cognitive activity within Vygotskian psycholinguistic theory. (HOD)

Responds to W. Frawley's and J. Lantolf's comments on the Frauenglass and Diaz study concerning the interaction between private speech and cognition. Argues that Vygotsky's theory predicts a positive effect on children's problem solving activity. (HOD)

Assessed the intellectual development and academic achievement of 87 diabetic children during the first 6 years of their illness. At the initial diagnosis, intellectual performance and school grades were in the average range. Over time, verbal intellectual performance and school grades declined, whereas nonverbal intellectual performance improved…

Observes 75 first- and third-grade children in their classroom mathematics seatwork to test assumptions drawn from Vygotsky's theory about the development of private speech and its relationship to task performance, attention, and motor behaviors accompanying task orientation. (HOD)

Examines the hypothesis that adults and children have media-specific conceptions of picturing and that the functional uses of photography and drawing differ across development. Results showed an age progression from viewing photography as only reflecting the real object to viewing it as a medium that allows for control and alteration of reality.…