title: Investigating the Receptive-Expressive Vocabulary Profile in Children with Idiopathic ASD and Comorbid ASD and Fragile X Syndrome.
abstract: Previous work has noted that some children with autism spectrum disorder (ASD) display weaknesses in receptive vocabulary relative to expressive vocabulary abilities. The current study extended previous work by examining the receptive-expressive vocabulary profile in boys with idiopathic ASD and boys with concomitant ASD and fragile X syndrome (ASD + FXS). On average, boys with ASD + FXS did not display the same atypical receptive-expressive profile as boys with idiopathic ASD. Notably, there was variation in vocabulary abilities and profiles in both groups. Although we did not identify predictors of receptive-expressive differences, we demonstrated that nonverbal IQ and expressive vocabulary positively predicted concurrent receptive vocabulary knowledge and receptive vocabulary predicted expressive vocabulary. We discuss areas of overlap and divergence in subgroups of ASD.
authors: Department of Communication Sciences and Disorders, Waisman Center, University of Wisconsin-Madison, 1500 Highland Ave, Madison, WI, 53705, USA. eileen.haebig@wisc.edu.|Department of Speech, Language, & Hearing Sciences, Purdue University, 715 Clinic Drive, West Lafayette, IN, 47907, USA. eileen.haebig@wisc.edu.
authors: Eileen
authors: 0000-0001-8216-7063
authors: E
authors: Haebig
authors: Department of Communication Sciences and Disorders, Waisman Center, University of Wisconsin-Madison, 1500 Highland Ave, Madison, WI, 53705, USA.
authors: Audra
authors: A
authors: Sterling
mesh_terms: D000293:Adolescent; D000067877:Autism Spectrum Disorder / Q000453:epidemiology* / Q000523:psychology*; D002648:Child; D015897:Comorbidity; D005600:Fragile X Syndrome / Q000453:epidemiology* / Q000523:psychology*; D006801:Humans; D007360:Intelligence; D008297:Male; D014825:Vocabulary; D014922:Wisconsin / Q000453:epidemiology
keywords: Autism spectrum disorder; Fragile X syndrome; Language phenotype; Vocabulary