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Article Dans Une Revue Research in Developmental Disabilities Année : 2012

Are French dyslexic children sensitive to consonant sonority in segmentation strategies? Preliminary evidence from a letter detection task

Résumé

This paper aims to investigate whether – and how – consonant sonority (obstruent vs. sonorant) and status (coda vs. onset) within syllable boundaries modulate the syllable-based segmentation strategies. Here, it is questioned whether French dyslexic children, who experience acoustic–phonetic (i.e., voicing) and phonological impairments, are sensitive to an optimal ‘sonorant coda – obstruent onset’ sonority profile as a cue for a syllable-based segmentation. To examine these questions, we used a modified version of the illusory conjunction paradigm with French dyslexic children compared with both chronological age-matched and reading level-matched controls. Our results first showed that the syllable-based segmentation is developmentally constrained in visual identification: in normally reading children, it appears to progressively increase as reading skills increase. However, surprisingly, our results also showed that dyslexic children were able to use syllable-sized units. Then, data highlighted that a syllable-based segmentation in visual identification basically relies on an optimal ‘sonorant coda – obstruent onset’ sonority profile rather than on phonological and orthographic statistical properties in normally reading children as well as, surprisingly, in dyslexic children. Our results are discussed to support a sonority-modulated prelexical role of syllable-sized units in visual identification in French, even in dyslexic children who exhibited a developmentally delayed profile. We argue that dyslexic children have deficits in online phonetic-phonological processing rather than degraded or underspecified phonetic-phonological representations.
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Dates et versions

hal-02963801 , version 1 (11-10-2020)

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Norbert Maïonchi-Pino, Bruno de Cara, Jean Écalle, Annie Magnan. Are French dyslexic children sensitive to consonant sonority in segmentation strategies? Preliminary evidence from a letter detection task. Research in Developmental Disabilities, 2012, 33 (1), pp.12-23. ⟨10.1016/j.ridd.2011.07.045⟩. ⟨hal-02963801⟩
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