Abstract
Behavioral Observation Audiometry (BOA) and Conditioned Orientation Response Audiometry (COR) were used in 15 children whose hearing loss had been identified with a newborn hearing screening program. The cases with moderate hearing impairment especially demonstrated greater improvements than those with severe and profound deafness, although improvements in the COR threshold, compared to the BOA threshold, could in some degree be observed in most cases regardless of their severity of deafness. Thus, interventional procedures including hearing assessments, amplification using hearing aids and counseling families with hearing impaired children must be conducted carefully and appropriate revision should repeatedly be required. It has already been reported that normal hearing infants demonstrated improvements in hearing thresholds during their first year of life, and similar improvement can be observed among children with hearing impairment as regards their auditory development.
