Language Development in Deaf Infants Following Cochlear Implantation

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Abstract
Objective—To evaluate the benefits of cochlear implantation in infancy and compare them to those obtained in children implanted at a slightly older age.Material and Methods—Using standard language measurement tools, including the Grammatical Analysis of Elicited Language—Presentence Level (GAEL-P) and the Reynell Developmental Language Scales, progress was documented in a child who received a cochlear implant in infancy and compared to that achieved in children implanted at older ages. A new measurement tool, the Visual Habituation Procedure, was used to document early skills and the results were compared to those obtained in normal-hearing infants.Results—By the age of 2 years the subject implanted in infancy achieved scores on the GAEL-P which were nearly equivalent to those achieved at the age of 51/2 years by children implanted at later ages. Age-equivalent scores on the Reynell Developmental Language Scales were achieved by the subject implanted in infancy and the ability to discriminate speech patterns was demonstrated using the Visual Habituation Procedure.Conclusion—This report demonstrates enhanced language development in an infant who received a cochlear implant at the age of 6 months.