Investigating the Receptive-Expressive Vocabulary Profile in Children with Idiopathic ASD and Comorbid ASD and Fragile X Syndrome

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• 作者：Eileen Haebig ; Audra Sterling
• 关键词：Autism spectrum disorder ; Fragile X syndrome ; Language phenotype ; Vocabulary
• 刊名：Journal of Autism and Developmental Disorders
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：47
• 期：2
• 页码：260-274
• 全文大小：
• 刊物类别：Behavioral Science
• 刊物主题：Child and School Psychology; Pediatrics; Neurosciences; Public Health;
• 出版者：Springer US
• ISSN：1573-3432
• 卷排序：47

文摘

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.