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Atypical phonological processing impairs written word recognition in children with cochlear implants

Abstract : Children equipped with cochlear implant (CI) do not achieve similar levels of word recognition as typical hearing (TH)children, but it is unclear whether the reading deficit results from less accurate phonological representations, atypicalreading procedures, or both. Phonological representations are crucial for reading acquisition in an alphabetic writingsystem, but CI users learn to read without having achieved the same level of speech perception as TH children. In thisbehavioural study, we addressed whether word reading in children using a CI (n = 25) is as strongly anchored inphonological operations as in TH children, matched for both chronological age (n = 25) and reading experience (n = 25).Using auditory phoneme perception tasks, we confirmed that children with a CI performed less accurately than TH children.When further tested for visual word recognition, CI users applied the same basic reading procedure as TH children, i.e.,they read pseudowords through phonological decoding and irregular words through orthographic coding. Finally, using avisual lexical task where subjects had to decide whether pseudowords were or not real words, we observed that CI usersrejected word homophones as accurately as TH children, but performed less well than TH controls for rejecting nonhomophonespseudowords. Preserved performance for homophones but not for non-homophones relative to controlssuggests that children using a CI compensate for defective phonological processing by relying on lexical representations.Altogether, this series of studies allows us to propose that the reading operations in children with a CI are similar in natureas in TH children, yet constrained by less reliable phonological representations.
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Contributor : Pascale Colé Connect in order to contact the contributor
Submitted on : Monday, February 27, 2017 - 3:23:32 PM
Last modification on : Friday, March 18, 2022 - 3:09:08 AM
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Sophie G Bouton, Pascale Colé, Willy Serniclaes, Lynne G Duncan, Anne-Lise G Giraud. Atypical phonological processing impairs written word recognition in children with cochlear implants. Language, Cognition and Neuroscience, 2015, ⟨10.1080/23273798.2014.1002796⟩. ⟨hal-01471061⟩



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