Motor development of deaf children with and without cochlear implants.

The purpose of this study was to investigate the impact of a cochlear implant (CI) on the motor development of deaf children. The study involved 36 mainstreamed deaf children (15 boys, 21 girls; 4- to 12-years old) without any developmental problems. Of these children, 20 had been implanted. Forty-three hearing children constituted a comparison group. Motor development was assessed by three standardized tests: the Movement Assessment Battery for Children, the Körperkoordinationstest für Kinder, and the One-leg standing test. Results showed that the hearing children performed on average significantly better than the deaf children (whether or not using a CI). Regarding the use of a CI, there was only a significant difference on one subtest between both groups, although there was a nonsignificant trend for the deaf +CI group to score somewhat worse on average than the deaf -CI group. This led to some significant differences between the hearing group and the deaf +CI group on measures requiring balance that did not hold for the hearing/deaf -CI comparison. Although this study could demonstrate neither a positive nor a negative impact of CI on balance and motor skills, the data raise the need for further, preferably longitudinal, research.