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Does the Development of Syntax Comprehension Show a Premature Asymptote among Persons with Down Syndrome? A Cross-Sectional Analysis

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Title: Does the Development of Syntax Comprehension Show a Premature Asymptote among Persons with Down Syndrome? A Cross-Sectional Analysis
Language: English
Authors: Facon, Bruno, Magis, David
Source: American Journal on Intellectual and Developmental Disabilities. Mar 2019 124(2):131-144.
Availability: American Association on Intellectual and Developmental Disabilities. P.O. Box 1897, Lawrence, KS 66044-1897. Tel: 785-843-1235; Fax: 785-843-1274; e-mail: AJMR@allenpress.com; Web site: http://www.aaiddjournals.org/
Peer Reviewed: Y
Page Count: 14
Publication Date: 2019
Document Type: Journal Articles
Reports - Research
Descriptors: Syntax, Comprehension, Down Syndrome, Vocabulary, Adolescents, Young Adults, Intellectual Disability, Age, Children
DOI: 10.1352/1944-7558-124.2.131
ISSN: 1944-7515
Abstract: Uncertainty persists regarding the post-childhood trajectory of syntactic acquisition of persons with Down syndrome (DS). In some studies, asymptote is reached in the early teens, whereas others find syntax continuing to develop at least into early adulthood. This study addressed the issue using a cross-sectional approach. Receptive syntax and vocabulary were tested in 62 children, adolescents and young adults with DS matched on chronological age and cognitive level with 62 participants with intellectual disability (ID) of undifferentiated etiology. On both tests there were significant effects of chronological age and diagnosis, but the chronological age × diagnosis interactions were nonsignificant. We concluded that comprehension of vocabulary "and" syntax does not asymptote prematurely in individuals with DS relative to those with other forms of ID.
Abstractor: As Provided
Entry Date: 2019
Accession Number: EJ1208769
Database: ERIC
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  Data: Does the Development of Syntax Comprehension Show a Premature Asymptote among Persons with Down Syndrome? A Cross-Sectional Analysis
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  Data: <searchLink fieldCode="AR" term="%22Facon%2C+Bruno%22">Facon, Bruno</searchLink><br /><searchLink fieldCode="AR" term="%22Magis%2C+David%22">Magis, David</searchLink>
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  Data: <searchLink fieldCode="SO" term="%22American+Journal+on+Intellectual+and+Developmental+Disabilities%22"><i>American Journal on Intellectual and Developmental Disabilities</i></searchLink>. Mar 2019 124(2):131-144.
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  Data: American Association on Intellectual and Developmental Disabilities. P.O. Box 1897, Lawrence, KS 66044-1897. Tel: 785-843-1235; Fax: 785-843-1274; e-mail: AJMR@allenpress.com; Web site: http://www.aaiddjournals.org/
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  Data: <searchLink fieldCode="DE" term="%22Syntax%22">Syntax</searchLink><br /><searchLink fieldCode="DE" term="%22Comprehension%22">Comprehension</searchLink><br /><searchLink fieldCode="DE" term="%22Down+Syndrome%22">Down Syndrome</searchLink><br /><searchLink fieldCode="DE" term="%22Vocabulary%22">Vocabulary</searchLink><br /><searchLink fieldCode="DE" term="%22Adolescents%22">Adolescents</searchLink><br /><searchLink fieldCode="DE" term="%22Young+Adults%22">Young Adults</searchLink><br /><searchLink fieldCode="DE" term="%22Intellectual+Disability%22">Intellectual Disability</searchLink><br /><searchLink fieldCode="DE" term="%22Age%22">Age</searchLink><br /><searchLink fieldCode="DE" term="%22Children%22">Children</searchLink>
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  Data: 10.1352/1944-7558-124.2.131
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  Data: Uncertainty persists regarding the post-childhood trajectory of syntactic acquisition of persons with Down syndrome (DS). In some studies, asymptote is reached in the early teens, whereas others find syntax continuing to develop at least into early adulthood. This study addressed the issue using a cross-sectional approach. Receptive syntax and vocabulary were tested in 62 children, adolescents and young adults with DS matched on chronological age and cognitive level with 62 participants with intellectual disability (ID) of undifferentiated etiology. On both tests there were significant effects of chronological age and diagnosis, but the chronological age × diagnosis interactions were nonsignificant. We concluded that comprehension of vocabulary "and" syntax does not asymptote prematurely in individuals with DS relative to those with other forms of ID.
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