Four-year old Allison's hearing loss is congenital.Five-year old Mark's hearing loss occurred at age 4 ½ after a bout with rubella.

Question

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Congenital hearing loss means that the child has had hearing loss since birth or before acquiring language, while Mark had normal hearing before acquiring rubella-induced hearing loss. Therefore, Allison may be more likely to experience language delays because she has had a longer period of time without full access to sound, which is crucial during the critical period for language development.

Four-Year Old Allison's Hearing Loss Is Congenital