Abstract
A test of verbal intelligence, and a test of classificatory ability based on Piaget's theory, were given to low‐socioeconomic rural European children and to reserve‐ and town‐dwelling rural part‐Aboriginal children. On both tests, the Europeans performed best and the reserve part‐Aboriginals worst. Rural part‐Aboriginals are thus too heterogeneous to be considered as a single population in studies of cognitive development. Correlations between scores on the two tests were low.

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