Laboratoire Psychologie de la Perception Institut Neurosciences Cognition Université Paris Descartes Centre National de Recherche Scientifique
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Troubles de la perception des phonèmes chez l’enfant dysphasique : déficit de perception catégorielle et perception allophonique

Developmental dysphasia is defined by a severe and specific deficit in oral language development. The aim of this study is to evidence a possible deficit in the categorical perception of speech sounds by dysphasic children. Identification and discrimination responses to stimuli generated by selective modifications of natural /aga/ and /aka/ logotemes were collected in a group of dysphasic children (N=16) and control children (N=33) of the same chronological age. The results confirm the predictions and suggest that dysphasic children display an allophonic mode of speech perception similar to the one previously evidenced in dyslexic children. Allophonic perception corresponds to an overdiscrimination between variants of the same phoneme.