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
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.
|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|
|Publisher:||American Speech-Language-Hearing Association.|