Phoneme Representation and Articulatory Impairment: Insights from Adults with Comorbid Motor Coordination Disorder and Dyslexia - Archive ouverte HAL Access content directly
Journal Articles Brain Sciences Year : 2023

Phoneme Representation and Articulatory Impairment: Insights from Adults with Comorbid Motor Coordination Disorder and Dyslexia

Rebecca Marchetti
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Serge Pinto
Laure Spieser
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Marianne Vaugoyeau
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Eddy Cavalli
  • Function : Author
Abdessadek El Ahmadi
  • Function : Author
Christine Assaiante
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Pascale Colé

Abstract

Phonemic processing skills are impaired both in children and adults with dyslexia. Since phoneme representation development is based on articulatory gestures, it is likely that these gestures influence oral reading-related skills as assessed through phonemic awareness tasks. In our study, fifty-two young dyslexic adults, with and without motor impairment, and fifty-nine skilled readers performed reading, phonemic awareness, and articulatory tasks. The two dyslexic groups exhibited slower articulatory rates than skilled readers and the comorbid dyslexic group presenting with an additional difficulty in respiratory control (reduced speech proportion and increased pause duration). Two versions of the phoneme awareness task (PAT) with pseudoword strings were administered: a classical version under time pressure and a delayed version in which access to phonemic representations and articulatory programs was facilitated. The two groups with dyslexia were outperformed by the control group in both versions. Although the two groups with dyslexia performed equally well on the classical PAT, the comorbid group performed significantly less efficiently on the delayed PAT, suggesting an additional contribution of articulatory impairment in the task for this group. Overall, our results suggest that impaired phoneme representations in dyslexia may be explained, at least partially, by articulatory deficits affecting access to them.

Domains

Psychology
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Dates and versions

hal-04334783 , version 1 (11-12-2023)

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Rebecca Marchetti, Serge Pinto, Laure Spieser, Marianne Vaugoyeau, Eddy Cavalli, et al.. Phoneme Representation and Articulatory Impairment: Insights from Adults with Comorbid Motor Coordination Disorder and Dyslexia. Brain Sciences, 2023, 13 (2), ⟨10.3390/brainsci13020210⟩. ⟨hal-04334783⟩
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