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Simulating SLI: General cognitive processing stressors can produce a specific linguistic profile

Hayiou-Thomas, M.E. and Bishop, D.V.M. (2004) Simulating SLI: General cognitive processing stressors can produce a specific linguistic profile. Journal of Speech, Language and Hearing Research, 47 (6). pp. 1347-1362. ISSN 1092-4388

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This study attempted to model specific language impairment (SLI) in a group of 6-year-old children with typically developing language by introducing cognitive stress factors into a grammaticality judgment task. At normal speech rate, all children had near-perfect performance. When the speech signal was compressed to 50% of its original rate, to simulate reduced speed of processing, children displayed the same pattern of errors that is reported in SLI: good performance on noun morphology (plural -s) and very poor performance on verb morphology (past tense -ed and 3rd-person singular -s). A similar pattern was found when memory load was increased by adding redundant verbiage to sentence stimuli. The finding that an SLI-like pattern of performance can be induced in children with intact linguistic systems by increasing cognitive processing demands supports the idea that a processing deficit may underlie the profile of language difficulty that characterizes SLI.

Item Type: Article
Institution: The University of York
Academic Units: The University of York > Psychology (York)
Depositing User: York RAE Import
Date Deposited: 08 Apr 2009 11:18
Last Modified: 08 Apr 2009 11:18
Published Version: http://dx.doi.org/10.1044/1092-4388(2004/101)
Status: Published
Publisher: American Speech-Language-Hearing Association.
Identification Number: 10.1044/1092-4388(2004/101)
URI: http://eprints.whiterose.ac.uk/id/eprint/6881

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