Research on Pronunciation Ability of Vietnamese Syllable Components before and after Using Cochlear Implants of Some Pre-School Children Groups (Case Study)

This study is one in my research direction that being carried out in the past few years. This focuses on the communication ability of deaf children at some facilities treating deaf children in Hanoi. The study aims to determine the effect of cochlear implantation on hearing and speech of children with hearing impairment (deaf children) so that conclusions and recommendations can be made for the treatment and language learning of deaf children in Hanoi and the whole country. The study was conducted at Sunny AVT Center for Deaf Children in Hanoi in 2021 on the 25 deaf children in the center (Among them are16 boys and 9 girls with Cochlear implants aged from 3-48 months). The study is carried out on 2 points of time: before and after hearing impaired children received Cochlear implants. Before Cochlear implant?s Materials are records and notes of pronunciation ability of children with hearing aids and those materials after Cochlear implant?s are videos of pronunciation ability. Research results show that cochlear implants is much superior than hearing aids. The great effect of the Cochlear implantation on the correct pronunciation of Vietnamese syllable components of the children is proved.