Sentence comprehension in young adults with developmental dyslexia |
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Authors: | Rebecca Wiseheart Lori J P Altmann Heeyoung Park Linda J Lombardino |
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Institution: | (1) University of Florida, 336 Dauer Hall, Box 117420, Gainesville, FL 32611-7420, USA |
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Abstract: | This study investigated the effects of syntactic complexity on written sentence comprehension in compensated adults with dyslexia.
Because working memory (WM) plays a key role in processing complex sentences, and individuals with dyslexia often demonstrate
persistent deficits in WM, we hypothesized that individuals with dyslexia would perform more poorly on tasks designed to assess
the comprehension of syntactic structures that are especially taxing on WM (e.g., passives, sentences with relative clauses).
Compared to their nondyslexic peers, individuals with dyslexia were significantly less accurate and marginally slower on passive
sentences. For sentences containing relative clauses, the dyslexic group was also less accurate but did not differ in response
times. Covarying WM and word reading in both analyses eliminated group differences showing that syntactic deficits in adults
with dyslexia are constrained by both WM and word-reading ability. These findings support previous research showing that syntactic
processing deficits are characteristic of dyslexia, even among high-achieving students. |
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