Two tests of classificatory ability based on Piaget's theory of cognitive development, and the Peabody Picture Vocabulary Test (PPVT), were administered to 40 full-blood urban Aboriginal children in the Northern Territory of Australia. The PPVT was also given to 80 white urban children of similar low-socioeconomic status. A trend in an earlier study for high-contact Aboriginals to perform on classification tests at about the same level as white children in a similar environment was confirmed, despite the markedly lower verbal IQ scores of Aboriginal children.
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