Grammatical SLI: A distinct subtype of developmental language impairment?

Grammatical specific language impairment (G-SLI) has been proposed as a distinct subtype of language impairment. We assessed a large sample of twins between the ages of 7 and 13 years on language comprehension tests sensitive to G-SLI. The sample included 37 same-sex twin pairs selected for the pres...

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Main Authors: Bishop, D, Bright, P, James, C, Bishop, S, Van der Lely, H
Format: Journal article
Published: Cambridge University Press 2000
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author Bishop, D
Bright, P
James, C
Bishop, S
Van der Lely, H
author_facet Bishop, D
Bright, P
James, C
Bishop, S
Van der Lely, H
author_sort Bishop, D
collection OXFORD
description Grammatical specific language impairment (G-SLI) has been proposed as a distinct subtype of language impairment. We assessed a large sample of twins between the ages of 7 and 13 years on language comprehension tests sensitive to G-SLI. The sample included 37 same-sex twin pairs selected for the presence of language impairment (LI) in one or both twins and 104 twin pairs from the general population. The number and patterns of errors in those with LI replicated findings from previous studies of G-SLI. Qualitative markers of G-SLI were derived from the tests. Out of 144 children for whom complete data were available, 2 scored positive on all five markers and 9 scored positive on four of the five markers. Most children who made grammatical errors characteristic of G-SLI had co-occurring deficits in other areas. These results raise questions for theories that treat this disorder as an all-or-none modular deficit.
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spelling oxford-uuid:28fc7bcd-8d5a-425e-8194-71a635898f092022-03-26T12:16:21ZGrammatical SLI: A distinct subtype of developmental language impairment?Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:28fc7bcd-8d5a-425e-8194-71a635898f09Symplectic Elements at OxfordCambridge University Press2000Bishop, DBright, PJames, CBishop, SVan der Lely, HGrammatical specific language impairment (G-SLI) has been proposed as a distinct subtype of language impairment. We assessed a large sample of twins between the ages of 7 and 13 years on language comprehension tests sensitive to G-SLI. The sample included 37 same-sex twin pairs selected for the presence of language impairment (LI) in one or both twins and 104 twin pairs from the general population. The number and patterns of errors in those with LI replicated findings from previous studies of G-SLI. Qualitative markers of G-SLI were derived from the tests. Out of 144 children for whom complete data were available, 2 scored positive on all five markers and 9 scored positive on four of the five markers. Most children who made grammatical errors characteristic of G-SLI had co-occurring deficits in other areas. These results raise questions for theories that treat this disorder as an all-or-none modular deficit.
spellingShingle Bishop, D
Bright, P
James, C
Bishop, S
Van der Lely, H
Grammatical SLI: A distinct subtype of developmental language impairment?
title Grammatical SLI: A distinct subtype of developmental language impairment?
title_full Grammatical SLI: A distinct subtype of developmental language impairment?
title_fullStr Grammatical SLI: A distinct subtype of developmental language impairment?
title_full_unstemmed Grammatical SLI: A distinct subtype of developmental language impairment?
title_short Grammatical SLI: A distinct subtype of developmental language impairment?
title_sort grammatical sli a distinct subtype of developmental language impairment
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