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The current study aims to provide a more precise understanding of phoneme acquisition by children with moderate hearing loss (MHL), since they have been an under-studied population among children with hearing loss. The acquisition of sounds by 15 children with MHL (mean: 3;11 year-old) was compared to that by six younger normal-hearing (YNH) children (mean: 2;8 year-old). All the children were video- and audio-recorded in interaction with one or both parents in two semi-spontaneous tasks, and during a naming task. All their productions were analysed in terms of percentage of accuracy and substitution patterns. Similarities and differences between the two populations were observed. Globally, the phoneme level of accuracy of children with MHL was similar to that of YNH, but with a general delay. The observation of substitution patterns revealed differences between the two populations, such as prevalent fortition of fricatives and /ʁ/ by children with MHL, which was unusual among YNH children. Another difference was the prevalent posteriorization of coronal fricatives by children with MHL, whereas anteriorization of post-alveolar fricatives was more common in YNH children. These findings highlight the role of perception and language experience in phonological acquisition, showing that an atypical hearing experience may not only cause a delay, but also the emergence of a specific developmental path.

Phoneme acquisition in French-speaking children with moderate hearing loss