Research designed to determine whether the phenomena observed by Piaget were task specific was performed. The results did not confirm Piaget's notion that topological concepts develop prior to the concepts of Euclidean geometry. (SD)

The investigation reported pursued the possibility of cross-cultural differences between American and Swiss children in terms of how they perceive and conceptualize spatial figures. There was statistical evidence that the preferences of American and Swiss children were different when compared as a whole or by sex and test version. (MK)

Piaget's theories concerning the child's development of spatial concepts are considered in comparison with related mathematical concepts. The analysis yielded discrepancies between Piagetian and mathematical use of terms. (SD)