Recent evidence has suggested that sleep may facilitate language learning. This study examined variation in language ability in 29 toddlers with Down syndrome (DS) in relation to levels of sleep disruption. Toddlers with DS and poor sleep (66%, n = 19) showed greater deficits on parent-reported and objective measures of language, including…

The purpose of this teacher inquiry is to explore the effects of signing and gesturing on the expressive language development of non-verbal children. The first phase of my inquiry begins with the observations of several non-verbal students with various etiologies in three different educational settings. The focus of these observations is to…

Fragile X syndrome (FXS) is the leading inherited cause of intellectual disability. The syndrome is caused by a single gene mutation on the X chromosome. Although individual differences are large, most individuals with FXS display weaknesses across all language and literacy domains compared with peers of the same chronological age with typical…

Twenty-eight adults with Down's syndrome and 28 adults with retardation of unknown origin responded to a language elicitation test. The adults with Down's syndrome exhibited an almost universal failure in mastering individual elements of the auxiliary verb system. The nature and source of biological constraints on language learning and…

Children who used chloride-deficient soy-based infant formulas (Neo-Mull-Soy and Cho-Free) have been found to exhibit expressive language disorders. Medical studies of such children are reviewed, and a case study compares the language development deficits of an eight-year-old boy who used the formula with that of his fraternal twin who did not.…

Analysis of characteristics of 53 children with specific language impairment (SLI), ages 4 to 9, suggested that family history is related to pattern of language performance. Children with deficits in only expressive language had a higher proportion of affected family members than did children with both expressive and receptive language deficits.…

This follow-up to a longitudinal speech and educational outcome study compared 24 adults (and their children) with history of moderate phonological-language disorder and 28 adults (and their children) with normal articulation as children. Children of the proband subjects performed significantly more poorly on all tests of articulation and…

The third of five volumes (and the second of the four curriculum guides) of Project Teach 'n' Reach, a program to help regular classroom teachers teach nondisabled students about disabilities, deals with communication handicaps. The curriculum addresses the following issues under the topic of hearing impairments: anatomical structures of the ear,…

This pamphlet presents an overview of speech and language disorders including a description of symptoms, possible causes, identification, intervention, and current research. Description of the disorders includes examples of symptoms; the four components and the physical tools of speech; and the role of the brain, including its hemispheres,…