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 SRCLD Presentation Details 

    A Three-Path Model of Spoken Language Acqusition.  
Valerie Wallace - The Riverside School
Christine Yoshinaga-Itano - University of Colorado-Boulder
Lise Menn - Univ of Colorado

SRCLD Year: 2003
Presentation Type: Poster Presentation
Poster Number:
Presentation Time: (na)
Extant models of language acquisition do not account for differing acquisition of spoken language among deaf and hard-of-hearing children. We examined the phonetic complexity and volubility of first-year babble, reasoning that the roots of phonological development lie therein. Phonetic complexity was static across deaf and hard-of-hearing children from 6 to 12 months, while increasing for normally hearing children. At 12 months, however, the profoundly deaf were significantly lower in phonetic complexity than the hard-of-hearing. Volubility increased from 6 to 9 months for all, but increased from 6 to 12 months only for hard-of-hearing children. These data suggest that initial canonical babbles trigger three acquisitional paths by 12 months. Normally hearing children recognize and swiftly maximize canonicity, producing less but phonetically complex babble. Hard-of-hearing children recognize and struggle with canonicity, producing more but phonetically static babble. Profoundly deaf children do not recognize canonicity, eventually producing less and phonetically simplified babble.
Supported in part by: NIDCD and NICHD, NIH, R13 DC001677, Susan Ellis Weismer, Principal Investigator
University of Wisconsin-Madison - Department of Communication Sciences and Disorders