Objective: The purpose of this investigation was to learn the degree to which cochlear implantation at 12 months of age could reduce gaps in performance between hearing age and chronological age - that is, whether infants with access to cochlear implants at 12 months of age would be 12 months delayed, or less, in vocabulary production one year later.
Method: Baseline vocabulary production was measured by parent interview and direct observation approximately 4 months post cochlear implant (CI) activation, and again 12 months after CI activation using the MacArthur-Bates Communicative Development Inventory: Words and Sentences.
Results: Infants produced few if any words shortly after CI activation. Word production increased significantly during the 12 months following CI activation but scores were still significantly below age-level expectations based on chronological age. Vocabulary scores were, however, significantly better than expected based on hearing age, or duration of implant use.
Conclusion: Word production was delayed at both time points; however, access to cochlear implants at 12 months of age decreased the size of anticipated delays one year later, narrowing the expected gap between hearing age and chronological age.
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| http://dx.doi.org/10.1179/1754762814Y.0000000075 | DOI Listing |
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