
Advances in the Sign Language Development of Deaf Children
Marc Marschark, Patricia Elizabeth Spencer, Brenda Schick
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Directions for Research and Practice
by Marc Marschark, Rico Peterson, Elizabeth Winston
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More the 1.46 million people in the United States have hearing losses in sufficient severity to be considered deaf; another 21 million people have other hearing impairments. For many deaf and hard-of-hearing individuals, sign language and voice interpreting is essential to their participation in educational programs and their access to public and private services.
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