Performance of children with mental retardation after cochlear implantation: speech perception, speech intelligibility, and language development.

Conclusion: Children with mental retardation (MR) obtain demonstrable benefit from cochlear implantation, and their postoperative performance was tempered by the degree of MR.

Objective: The purpose of this study was to investigate the performance of children with MR after implantation, and to explore their progress according to the degree of MR.

Methods: Fifteen implanted children with MR were included.