Used descriptive analysis and a forced choice task to investigate childrens' and adults' production, interpretation, and judgment of notation. Results showed that young children may not impose the same symbol-meaning structure at decoding that was proposed at encoding. Only after this ability develops does a preference for one form-one function…

Examines, through a longitudinal study, the temporal correspondences of 4 Japanese children, aged 7 to 11, in the attainment of specific milestones in play and language. All children proceeded through the same sequence of stages, but the rate of development was different depending on their environment. (34 references) (GLR)