인공와우 이식 아동의 어휘 발달

다국어 초록 (Multilingual Abstract)

As cochlear implant devices are getting smaller, faster, and smarter, more children with severe and profound hearing impairment derive benefit from cochlear implant. The purpose of this study was to evaluate the rates of receptive and expressive vocabulary acquisition of children with cochlear implants. Fifteen children with prelingual onsets of deafness were implanted with the Nucleus multichannel cochlear prosthesis. They ranged in age from 2 years 9 months to 10 years 11 months. The children were evaluated with Peabody Picture Vocabulary Test and Expressive One-Word Picture Vocabulary Test at pre-implantation and 6 month intervals from initial stimulation. Equivalent ages of receptive and expressive vocabulary in most children increased over time at various postoperative intervals. But all children had equivalent ages well below their chronological ages at pre and postoperative evaluation. Although large individual differences were observed in vocabulary development, length of implant usage contributes to improved performance. The results of this study support the suggestions from previous studies that children with cochlear implants can integrate the auditory information provided by the device into both receptive and expressive spoken language.