Explores implications of two cognitive development perspectives for characterizing ontogeny of causal reasoning. Reviews literature on causal reasoning in the preschool years and concludes that the hypothesis of an invariant causal scheme is only partially correct. (Author/SO)

Critically reviews research on developmental differences in reactions to the physically disabled in order to illustrate age-related influences and to provide a clearer conceptualization of such reactions. (Author/CM)

Examined U-shaped development of graphic symbolization in children and in nonartist and artist adults. Found that drawing scores of adult artists did not differ from those of youngest children and artist adolescents, with a developmental sequence in acquisition of the ability to construct referential connections underlying visual metaphors.…