The relationship between symbolic play and early language was studied in 40 girls and 39 boys between 12 and 24 months of age. Subjects were individually tested during two or three sessions by a female experimenter in a day care center in Jyvaskyla, Finland. Children's symbolic play level was assessed according to a developmental structure of five…

This paper focuses on issues of representation and interaction styles that are relevant considerations in the design and analysis of hypermedia learning environments. Analysis is supported by examples from the "HUGH" series of studies involving learners in reasoning about formal hypermedia representations. The representational issues include…

Given the role science and technology play in economic and social development in today's world, scientific and technological literacy must be given priority as an essential component of basic education. The significance of the visual component of literacy has increased with advances in technology and picture and image usage. The United Nations…

The development of and relationship between early language, symbolic play, sensorimotor skills, and social development were examined in a longitudinal study conducted in Japan with two young autistic males who were observed from the approximate ages of 2 to 4 years in clinic, day care, and home settings. One child acquired speech; the other did…