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It is estimated that there are about 40,000 persons deaf since infancy in Great Britain. Nearly 4,000 children of school age in England are deaf enough to require education in special schools. Of these, 500 in the schools of London were the object of the study the results of which constitute this report. The report shows that nearly one half of these children were born deaf; others became deaf on account of diseases that might be preventable. The majority of the children investigated were afflicted with a hearing defect before the age of 2 years. All gave evidence of some degree of mutism. Because of the extreme youth of those examined, the author overcame many obstacles in attempting to obtain an accurate estimate of the hearing loss presented by the children. There were experimental studies made with amplified sound which demonstrated not so much an improved faculty for hearing, as
Hearing and Speech in Deaf Children. JAMA. 1937;109(14):1148-1149. doi:10.1001/jama.1937.02780400064029