Lexical processing during naming in children with cochlear implants
Item
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Title
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Lexical processing during naming in children with cochlear implants
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Identifier
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d_2009_2013:e25b6b0eab5d:10696
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identifier
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10794
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Creator
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Wechsler-Kashi, Deena,
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Contributor
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Richard G. Schwartz
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Date
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2010
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Language
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English
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Publisher
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City University of New York.
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Subject
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Speech therapy | Language | Audiology | Children | Cochlear implant | Hearing Impaired | Language development | Lexical processing
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Abstract
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The speech and language skills of deaf children significantly improve after they receive a cochlear implant (CI). Nevertheless, many do not achieve age-appropriate language skills (Geers, Nicholas, & Sedey, 2003). The primary goal of the present study was to examine lexical access and knowledge in children with CIs.;Twenty children with CIs (9 females, 11 males) and 20 children with normal-hearing (NH; 14 females, 6 males) age 7-10 participated. The CI participants included children with severe to profound bilateral sensorineural hearing loss with at least 8 months of experience with CI prior to participation in this study.;Lexical abilities were examined using two naming tasks, a timed picture-naming task and a phonological and semantic Verbal Fluency (VF) naming task. In the timed picture-naming task, children rapidly named pictures of objects appearing on a computer screen. Reaction times were measured from the onset of picture presentation to the initiation of a verbal response. In the VF tasks, children were given one minute to generate as many words as they could that begin with a given sound (/t/,/l/,/f/) or belong to a certain semantic category (animals, food). All hearing subjects passed an audiological screening.;Children with CIs generated fewer words than the NH children on the VF tasks. Larger group differences were found on the phonological VF task compared to the semantic VF task. No group differences were found between children with CIs and children with NH on the timed picture-naming task.;Children with CIs seemed to access words less efficiently than NH peers. In contrast, children with CIs did not differ than the NH group in the speed of retrieval and word duration when naming simple pictures. Therefore, the differences between the groups in the VF naming task appear to reflect retrieval difficulties (due to differences in representation or organization) that are apparent under more challenging tasks. The limited early linguistic and auditory experiences of children with CIs alter the typical development of the lexicon and affects lexical organization or representations. If these atypical representations cannot be reconstructed or refined at later stages of development, certain aspects of language knowledge and performance may be atypical even at the advanced ages.
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Type
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dissertation
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Source
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2009_2013.csv
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degree
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Ph.D.
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Program
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Speech and Hearing Sciences
