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Reilly, Judy Snitzer; And Others – Applied Psycholinguistics, 1990
Examines the acquisition of conditional sentences in American Sign Language (which entail the use of both manual signs and grammaticized nonmanual facial expressions) by deaf children. The results indicate that children first acquire manual conditional signs before they employ obligatory grammaticized facial expressions, and also acquire manual…
Descriptors: American Sign Language, Deafness, Expressive Language, Facial Expressions

Musselman, Carol Reich; And Others – Applied Psycholinguistics, 1988
A longitudinal study of the effect of mothers' communication modes on the language development of children (N=149) with severe or profound hearing loss indicated that children whose mothers used oral communication had higher scores on measures of spoken language, whereas children whose mothers used manual communication had higher scores on…
Descriptors: Child Language, Communication Skills, Deafness, Language Acquisition