Objectives: A large number of congenitally deaf children are born annually. If not treated, this will have destructive effects on their language and speech development, educational achievements and future occupation. In this study it has been tried to determine the level of language skills in children with Cochlear Implants (CI) in comparison with Normal Hearing (NH) age-mates.

Methods: Test of Language Development was administered to 30 pre-lingual, severe-to-profound CI children between the ages of 5 to 8. The obtained scores were compared to a Persian database from scores of normally hearing children with the same age range.

Results: Results indicated that in spite of great advancements in different areas of language after hearing gain, CI children still lag behind their hearing age-mates in almost all aspects of language skills.

Discussion: Based on the results, it is suggested that children with average or above average cognitive skills who use CI have the potential to produce and understand language comparable to their normally hearing peers.