The reduction of hearing in infants and children not only negatively affects their speech ability but also has adverse effects on social, emotional, and conceptual development. It is known that untreated significant hearing loss can cause approximately a 30% decrease in IQ (intelligence quotient). The newborn and child hearing screening test is based on the measurement of otoacoustic signals originating from the auditory system in babies and children. An early diagnosis determined by this test will positively impact your baby's future life.