Abstract
Cluster analysis of test scores on expressive phonology and comprehension of words and sentences in 7–9-year-old children with preschool diagnosis of Autistic Disorder yielded 4 clusters. Cluster 1 (N = 11): phonology and comprehension both low; Cluster 2 (N = 4): phonology low, near average comprehension; Cluster 3 (N = 40): average phonology, comprehension low to low average; Cluster 4 (N = 7): average or better phonology and comprehension. The clusters support two major types of language disorders in autism driven by impaired expressive phonology, each divisible by comprehension ability. The clusters refute a single language disorder in autism and are consonant with earlier-defined clinical subtypes.
Published Version
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