The child must also be physically capable of sending and receiving sound signals in a language.
All infants make “cooing” and “babbling” noises during their first year, but congenitally deaf infants stop after about six months. So, in order to speak a language, a child must be able to hear that language being used. By itself, however, hearing language sounds is not enough. One case, reported by Moskowitz (1991), demonstra- ted that, with deaf parents who gave their normal-hearing son ample exposure to television and radio programs, the boy did not acquire an ability to speak or under- stand English. What he did learn very effectively, by the age of three, was the use of American Sign Language, that is, the language he used to interact with his parents. A crucial requirement appears to be the opportunity to interact with others via language.
The child must also be physically capable of sending and receiving sound signals in a language. All infants make “cooing” and “babbling” noises during their first year, but congenitally deaf infants stop after about six months. So, in order to speak a language, a child must be able to hear that language being used. By itself, however, hearing language sounds is not enough. One case, reported by Moskowitz (1991), demonstra- ted that, with deaf parents who gave their normal-hearing son ample exposure to television and radio programs, the boy did not acquire an ability to speak or under- stand English. What he did learn very effectively, by the age of three, was the use of American Sign Language, that is, the language he used to interact with his parents. A crucial requirement appears to be the opportunity to interact with others via language.
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