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J Autism Dev Disord. 1991 Sep;21(3):281-90.

Changes in cognitive and language functioning of preschool children with autism.

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  • 1Rutgers, State University of New Jersey, Piscataway 08855-0819.


Preschool children with autism and their normally developing peers were compared on the Stanford-Binet IV and Preschool Language Scale before and after 1 school year. Both measures showed that although the children with autism functioned at a lower level than their normally developing peers, the children with autism had narrowed this gap after treatment, making a nearly 19-point increase in IQ and an 8-point gain in language quotient. The IQ measure remained stable for the normally developing peers while their language showed a 7.73-point increase. The data support the notion that young children with autism can make very significant developmental gains.

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