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Perception catégorielle et perception allophonique: incidences de l'âge, du niveau de lecture et des couplages entre prédispositions phonétiques

Abstract : This study was aimed at evaluating the categorical perception of speech sounds in relationship with reading acquisition and difficulty of this learning. Both voicing (VOT) and place (F2 & F3 transitions) continua were used. We referred to three different criteria for assessing categorical perception (CP): relative CP, phoneme boundary effect and categorical precision. 5 studies were Consistent with our predictions, age and reading acquisition showed influences on CP in a longitudinal study (with 6, 7 and 8 y.o children). Further, in a comparative study between dyslexics and chronological age controls (10 y.o.), we found that reading level influences CP. Dyslexics exhibited a CP deficit and more specifically an allophonic mode of speech perception. Still another study with older dyslexics (17 y.o) demonstrated that the CP deficit is persistent. According to studies on the voicing feature, allophonic perception might arise from a lack of coupling between predispositions during the perceptual development. We confirmed the coupling hypothesis for a place continuum. Allophonic perception should have implications for reading acquisition because it disrupts the association between graphemes and phonemes, which is a sine qua non for reading acquisition. Unfortunately, a tentative remediation test with dyslexic children showed that allophonic perception is highly resistant to the remediation.
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Caroline Bogliotti. Perception catégorielle et perception allophonique: incidences de l'âge, du niveau de lecture et des couplages entre prédispositions phonétiques. Linguistique. Université Paris-Diderot - Paris VII, 2005. Français. ⟨tel-00468920⟩

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