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| Research article summary (published 29 Nov 1993): |
Morphological deficits of children with SLI: evaluation of number marking and agreement.
Full Abstract
Three accounts of the grammatical deficits of children with specific language impairment (SLI), that is, Missing Feature, Surface Account, and Missing Agreement, were evaluated by examining children with SLI and language-matched non-SLI children's acquisition of number marking and number agreement. The data consisted of spontaneous language transcripts from 108 preschool children. Number marking was evaluated using five indices of plural development: percent of use in obligatory contexts, lexical productivity, selectivity, contrastivity, and morphological productivity. Two levels of number agreement were examined: the traditional agreement between the verb and its subject, and a new measure of agreement within the noun phrase. The results indicated that children with SLI control number marking, counter to the predictions of the Missing Feature hypothesis and the Surface Account. On the other hand, as predicted, number agreement across clausal boundaries was more difficult for the children with SLI as compared to the children in the control group. A close analysis of number marking within the noun phrase revealed two distinctive contexts, determiner+noun versus quantifier+noun. Children with SLI had more difficulty with the latter than the former, whereas the two contexts were not differentiated for the control children. Syntactic and semantic explanations are discussed as interpretive options.
Author information
Author/s: Rice, M L (ML); Oetting, J B (JB);
Affiliation: University of Kansas, Lawrence.
Grants: DC00485 (Agency:NIDCD NIH HHS)
Journal and publication information
Publication Type: Comparative Study; Journal Article; Research Support, U.S. Gov't, P.H.S.
Journal: Journal of speech and hearing research (J Speech Hear Res), published in UNITED STATES. (Language: eng)
Reference: 1993-Dec; vol 36 (issue 6) : pp 1249-57
Dates: Created 1994/03/28; Completed 1994/03/28; Revised 2007/11/14;
PMID: 8114492, status: MEDLINE (last retrieval date: 2/18/2009, IMS Date: )
Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.
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