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The role of spoken and sign languages in the retention of written words by prelingually deafened native signers.

The purpose of this study was to determine the nature and efficiency of the strategies used by prelingually deafened native signers for the temporary retention of written words with reference to a primary language-coding hypothesis (M. A. Shand, 1982). For the gathering of the data, participants were shown lists of serially presented written target words that they were asked to recognize according to their presentation order from within word pools that contained different types of code-specific distracter words. Three performance dimensions were examined: (a) false recognition of target words, (b) correct recognition of target words, and (c) retention of target word presentation order. Participants were prelingually deafened native signers (n=11, average grade level=8.18 [1.17]) and a hearing control group (n=25, average grade level=9.00 [0.76]). Findings from the analysis of the nature of false recognition and the number of correctly recognized words show convincingly that formationally similar distracter words interfered with the memory performance of the native signers and phonologically similar distracter words with that of the hearing control group. It was concluded that the participants decoded written words into a code reflecting their primary language experience for their temporary retention in working memory.

Adolescent↗

Speech following sign language training in autistic children with minimal verbal language.

This study was carried out to test the main and interaction effects of training condition and pretreatment-elicited verbal imitation ability when predicting spoken language use during language training of 60 minimally verbal autistic children. Subjects were randomly assigned to Speech Alone, Sign Alone, Simultaneous Presentation of Sign and Speech, and Alternating Presentation of Sign and Speech training conditions. Speech Alone, Simultaneous Presentation, and Alternating Presentation condition facilitated more child-initiated speech during treatment than did the Sign Alone condition. Regardless of training condition, pretreatment verbal imitation ability positively predicted the size of child-initiated spoken vocabulary observed during training. Exploratory analyses indicated that, in addition to verbal imitation, pretreatment age and IQ may also predict spoken language developed during training.

Autistic Disorder↗

Infants with congenital deafness: on the importance of early sign language acquisition.

Two boys who both had a profound bilateral hearing impairment met at a specialized sign preschool. Their preconditions were quite different, since in one of them the hearing impairment was detected in the maternity ward with the aid of otoacoustic emissions, and habilitation had begun at age 4 months. The other boy's impairment was not detected until age 2 years; habilitation was thus much delayed. Data were collected on the two boys using interviews with parents and teachers, observation, and video recording in the children's own environment at home and in the specialized sign preschool. Characteristic differences between the boys are described regarding their social and linguistic development relating to the time of detection of the hearing impairment. This illustrates the importance of early detection and habilitation so as to avoid separation of individuals into different groups with differing social and academic prospects, depending on the lack of early linguistic stimulation and consequent poor language acquisition. Giving children the possibility of developing a language is the primary consideration.

Age Factors↗