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Sandberg, Elisabeth Hollister; And Others – Child Development, 1996
Two studies of development of spatial representation with two dimensions found that children as young as five years use the same two independent dimensions in fine-grained spatial coding of location in a circle as adults use--radius and angle. The adult pattern, where angle as well as radius is coded hierarchically, emerges by nine years. (HTH)
Descriptors: Adults, Classification, Cognitive Development, Concept Formation