A phonological system at 2 years after cochlear implantation

This report is a description of a developing phonological system as manifes ted in the productions of a prelingually deafened child approximately 2 yea rs after fitting with a Nucleus 22-Channel Multi-Electrode Cochlear Implant . A probe list consisting of 23 proper nouns familiar to the child was used to elicit samples of her speech; stimulus materials consisted of photograp hs of those persons (friends and family members) whose names were included in the probe list. Analysis of the child's productions addressed the compos ition of the phonetic inventory of consonants and vowels and the presence o f syllable structure and other phonotactic constraints. Results indicated a rich inventory of speech sound segments (among both consonants and vowels) and a lack of stringent constraints on syllable structure and consonants p ermitted in specified word positions. A further comparative analysis of cor respondences with the ambient language showed a number of patterns that are also common in the speech of children with normal hearing.