Conclusion
The topic of this paper was chosen because of the interest in the abilities of hard of hearing infants. Because of the introduction of universal hearing screening, many children are being recognized as being deaf earlier. You can't put a price on the years a child misses when a hearing problem is not detected. If the hearing loss isn't discovered for a couple of years, those are years wasted for both the child and the family. It can greatly affect the child's normal speech and language development, as was supported in this paper. Studying the sound production of deaf infants and comparing this with that of normally hearing infants, can give more insight into the role of auditory speech perception on sound production. So far, no systematic work has been reported on the development of sound production of deaf infants in the first months of life. More than half of all deafness or hearing impairment is believed to have genetic cause(s). Recessive hearing impairment accounts for the largest portion of deafness or hearing impairment. About 90 percent of infants who are born deaf are born to hearing parents. Some hereditary forms of deafness or hearing impairment are associated with other identifiable physical characteristics (Usher syndrome, and Waardenburg syndrome). It was proven in the current paper that infants, who are diagnosed as being deaf or hard of hearing, will still develop receptive vocabulary. The research evidence documented supports this theory.
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