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The understanding of complex syntax in children with Down syndrome [version 2; peer review: 3 approved]
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Frizelle, Pauline, Thompson, Paul A., Duta, Mihaela and Bishop, Dorothy V. M. (2019) The understanding of complex syntax in children with Down syndrome [version 2; peer review: 3 approved]. Wellcome Open Research, 3 . 140. doi:10.12688/wellcomeopenres.14861.2 ISSN 2398-502X.
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Official URL: https://doi.org/10.12688/wellcomeopenres.14861.2
Abstract
Background: Down syndrome (DS) is associated with poor language skills that seem disproportionate to general nonverbal ability, but the nature and causes of this deficit are unclear. We assessed how individuals with DS understand complex linguistic constructions, and considered how cognitive ability and memory and impact the ability of those with DS to process these sentence types.
Methods: There were three groups participating in the study: children with DS (n = 33) and two control groups composed of children with cognitive impairment of unknown aetiology (CI) (n = 32) and children with typical development (n = 33). The three groups did not differ on raw scores on a test of non-verbal cognitive ability. Using a newly devised animation task, we examined how well individuals with DS (n = 33) could understand relative clauses, complement clauses and adverbial clauses compared to children with CI and typically developing controls. Participants also completed the Test for the Reception of Grammar-2, three measures of memory (forward and backward digit recall, visuo-spatial memory) and a hearing screen.
Results: Results indicated that (1) with the exception of intransitive subject relative clauses, children with DS performed at floor on all other complex sentences, (2) they performed at a significantly lower level than both control groups, and (3) DS status accounted for a significant proportion of the variance over and above memory skills.
Conclusions: Our findings suggest that children with DS have a disproportionate difficulty understanding complex sentences compared to two control groups matched on mental age. Furthermore, their understanding of syntax is not completely explained by poor cognitive or memory skills, rather it appears to be a specific deficit that may distinguish children with DS from other neurodevelopmental disorders.
| Item Type: | Journal Article | ||||||
|---|---|---|---|---|---|---|---|
| Divisions: | Faculty of Social Sciences > Centre for Educational Development, Appraisal and Research (CEDAR) | ||||||
| Journal or Publication Title: | Wellcome Open Research | ||||||
| Publisher: | F1000Research | ||||||
| ISSN: | 2398-502X | ||||||
| Official Date: | 28 February 2019 | ||||||
| Dates: |
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| Volume: | 3 | ||||||
| Article Number: | 140 | ||||||
| DOI: | 10.12688/wellcomeopenres.14861.2 | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Access rights to Published version: | Open Access (Creative Commons) |
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