Articulation skills in Turkish speaking children with cochlear implant

Objective: The benefits of using cochlear implant (CI) on speech perception and production have been documented. The aim of this study is to investigate the effect of age of cochlear implantation performed and length of auditory experience with Cl on the development of articulation skills in prelingual children with Cl. Methods: For this purpose, 14 children with Cl were administered through the standardized articulation test named AAT (Ankara Articulation Test). In order to evaluate the development of articulation skills, AAT was applied to each child with CI at the first and the fourth years of Cl. The test group was selected among those congenitally hearing impaired children who had used hearing aids bilaterally before the age of one and a half, and received intervention after fitting hearing aids. The test group was divided into two subgroups: Group I consisted of the children implanted at and below the age of 3 and Group 2 consisted of the children implanted after the age of 3. Evaluations of articulation skills between groups and within groups were performed in the first and fourth years of implantation. In the study, nonparametric statistics have been used to compare the test scores. Mann-Whitney U-test and Wilcoxon test have been used in the comparisons made between groups and within groups, respectively. Results: While there has not been observed any statistically significant difference between the first year articulation skills of children with Cl at and below the age of three and children with CI above the age of 3, for the fourth year this difference has been found to be statistically significant. Conclusions: The results demonstrate the importance of the early application of CI and length of auditory experience with Cl in the development of articulation skills. (C) 2009 Elsevier Ireland Ltd. All rights reserved.