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ERIC Number: EJ959781
Record Type: Journal
Publication Date: 2012-Mar
Pages: 15
Abstractor: As Provided
Reference Count: N/A
ISSN: ISSN-0093-934X
Exceptional Lexical Skills but Executive Language Deficits in School Starters and Young Adults with Turners Syndrome: Implications for X Chromosome Effects on Brain Function
Temple, Christine M.; Shephard, Elizabeth E.
Brain and Language, v120 n3 p345-359 Mar 2012
TS school starters had enhanced receptive and expressive language on standardised assessment (CELF-P) and enhanced rhyme judgements, spoonerisms, and lexical decision, indicating enhanced phonological skills and word representations. There was marginal but consistent advantage across lexico-semantic tasks. On executive tasks, speeded naming of numbers was impaired but not pictures. Young TS adults had enhanced naming and receptive vocabulary, indicating enhanced semantic skills. There were consistent deficits in executive language: phonemic oral fluency, rhyme fluency, speeded naming of pictures, numbers and colours; sentence completion requiring supression of prepotent responses. Haploinsufficiency of X-chromosome drives mechanisms that affect the anatomical and neurochemical development of the brain, resulting in enhanced temporal lobe aspects of language. These strengths co-exist with impaired development of frontal lobe executive language systems. This means not only that these elements of language can decouple in development but that their very independence is driven by mechanisms linked to the X-chromosome. (Contains 11 tables.)
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Assessments and Surveys: Clinical Evaluation of Language Functions