Verb Class Distinctions and AAC Language-Encoding Limitations This study explored the status of an English grammatical distinction in the language of individuals who have never been able to encode that distinction previously. English past tense marking was used as a context to examine regular and irregular verb class distinctions in the language of two adults with severe ... Research Article
Research Article  |   December 01, 1993
Verb Class Distinctions and AAC Language-Encoding Limitations
 
Author Affiliations & Notes
  • Ann E. Sutton
    McGill University Montreal, Canada
  • Tanya M. Gallagher
    McGill University Montreal, Canada
  • Contact author: Ann Sutton, School of Human Communication Disorders, McGill University, 1266 Pine Avenue West, H3G 1A8 Montreal, P.Q. Canada.
Article Information
Augmentative & Alternative Communication / Language / Research Articles
Research Article   |   December 01, 1993
Verb Class Distinctions and AAC Language-Encoding Limitations
Journal of Speech, Language, and Hearing Research, December 1993, Vol. 36, 1216-1226. doi:10.1044/jshr.3606.1216
History: Received September 16, 1992 , Accepted June 15, 1993
 
Journal of Speech, Language, and Hearing Research, December 1993, Vol. 36, 1216-1226. doi:10.1044/jshr.3606.1216
History: Received September 16, 1992; Accepted June 15, 1993

This study explored the status of an English grammatical distinction in the language of individuals who have never been able to encode that distinction previously. English past tense marking was used as a context to examine regular and irregular verb class distinctions in the language of two adults with severe congenital physical impairments who rely on augmentative and alternative communication (AAC) systems to communicate. In the subjects’ lexically based AAC systems, past tense was marked on regular verbs and irregular verbs using the same strategy. The subjects accessed their AAC displays using four-digit eye gaze number codes. They were shown a novel affixation strategy through manipulation of the four-digit codes that allowed them to mark past tense on regular verbs via an affixation process. Their semantic strategy for marking past tense on irregular verbs was not changed. The subjects’ patterns of use of the two strategies on exemplars of each verb class revealed limited evidence of distinctive use of the two strategies based on verb class membership. Theoretical and clinical implications are discussed.

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