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J Child Psychol Psychiatry. 1992 Mar;33(3):607-16.

Development of low- and high-functioning autistic children.

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McGill University, Montréal, Québec, Canada.


Aspects of developmental sequences and structures were assessed in low- and high-functioning autistic and non-autistic developmentally disabled children. Specific developmental issues examined included sequences, regressions and profiles. Classification into the high- or low-functioning groups was based on a full scale IQ cutoff of 50. In general, there were few differences in the sequences of development among the groups. However, the autistic children were more likely than non-autistic children to display developmental regressions and unevenness across developmental domains. These developmental peculiarities were more pronounced in the low- as compared to high-functioning autistic children. These findings are discussed with regard to issues of developmental processes, classification and autism.

[Indexed for MEDLINE]

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