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  • Title: Receptive vocabulary in boys with autism spectrum disorder: cross-sectional developmental trajectories.
    Author: Kover ST, McDuffie AS, Hagerman RJ, Abbeduto L.
    Journal: J Autism Dev Disord; 2013 Nov; 43(11):2696-709. PubMed ID: 23588510.
    Abstract:
    In light of evidence that receptive language may be a relative weakness for individuals with autism spectrum disorder (ASD), this study characterized receptive vocabulary profiles in boys with ASD using cross-sectional developmental trajectories relative to age, nonverbal cognition, and expressive vocabulary. Participants were 49 boys with ASD (4-11 years) and 80 typically developing boys (2-11 years). Receptive vocabulary, assessed with the Peabody Picture Vocabulary Test, was a weakness for boys with ASD relative to age and nonverbal cognition. Relative to expressive vocabulary, assessed with the Expressive Vocabulary Test, receptive vocabulary increased at a lower rate for boys with ASD. Vocabulary trajectories in ASD are distinguished from typical development; however, nonverbal cognition largely accounts for the patterns observed.
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