The development of an expressive language score for people with autism based on the ADOS-2 was recently reported by Mazurek et al. (2019). The current study examined the construct validity of the ADOS-2 expressive language score (ELS) in a sample of adolescents with fragile X syndrome (n = 45, 10 girls), a neurodevelopmental disorder with high…

Purpose: The aim of this study was to investigate language growth in individuals with fragile X syndrome (FXS) from early childhood to adolescence and the influence of maternal responsivity on language growth. Method: We conducted a longitudinal analysis of language development in 55 youths (44 males, 11 females) with FXS. Data collection spanned…

In an earlier randomized clinical trial, daily communication and language therapy resulted in more favorable spoken vocabulary outcomes than weekly therapy sessions in a subgroup of initially nonverbal preschoolers with intellectual disabilities that included only children with Down syndrome (DS). In this reanalysis of the dataset involving only…

Purpose: This research explored whether sustained maternal responsivity (a parent-child interaction style characterized by warmth, nurturance, and stability as well as specific behaviors, such as contingent positive responses to child initiations) was a significant variable predicting vocabulary development of children with fragile X syndrome…

Purpose: The current study investigated finiteness marking (e.g., he walk "s", he walk "ed") in boys with fragile X syndrome (FXS); the boys were grouped based on receptive vocabulary (i.e., borderline, impaired). Method: Twenty-one boys with the full mutation of fragile X, between the ages of 8 and 16 years participated. The…

This article reviews the efficacy of cochlear implantation in children with prelingual deafness. A brief introduction to cochlear implants is provided, followed by a review of research regarding the positive effects of cochlear implantation on speech perception, speech production, and language development. Implications for early childhood…

Predictors of productive and receptive language development in 39 children with intellectual disabilities (17 with Down syndrome) and their parents were identified. Children were in the prelinguistic or first stage of productive language acquisition (Brown, 1973). The Down syndrome and non-Down syndrome groups were matched on several variables,…

Fifty-eight toddlers with developmental delays participated in a 12-month longitudinal study of the relationship between prelinguistic representational ability and later expressive vocabulary. Results indicated that representational play was a significant predictor of later expressive vocabulary, but vocabulary comprehension was not. (Author/DB)