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Morphosyntactic Ability and Word Fluency in Atypically Developing Children

其他書名	Evidence from Children with Specific Language Impairment and Children with Early Focal Lesions
出版	University of California, San Diego, 2000
URL	http://books.google.com.hk/books?id=aGxvEouQG8wC&hl=&source=gbs_api

註釋The comparison of performance between children with Specific Language Impairment and children who have sustained early focal brain damage offers a rich arena from which to examine many fundamental issues in cognitive development, brain plasticity, and the study of language processing. While SLI children have no overt anatomical abnormalities or specific lesions that might be tied to their impairments, they exhibit a number of language deficits that are quite similar to patterns seen among adult aphasics who have suffered a clear neurological insult. Competing accounts of SLI have proposed a range of mechanisms, knowledge deficits, missing or malfunctioning components of grammar, or reduced processing capabilities as the source of this developmental difficulty. In contrast, children who have sustained focal brain damage early in infancy do have clear and localizable anatomical abnormalities, yet their language difficulties are more subtle, if non-existent, on many measures. The research examined the acquisition of morphosyntax across populations of children with neurological and/or behavioral abnormalities. The central objectives were (1) to examine the development of morphosyntactic ability in children with Specific Language Impairment and their normally developing agemates on the Tags Question Task (Dennis, Sugar, & Whitaker, 1982) (2) to extend these analyses to include the performance of children who have sustained early focal brain damage in both cross-sectional studies of performance on the Tags Questions Task and (3) to evaluate the interaction of morphosyntactic ability and processing constraints by comparing the performance of children with SLI and normally developing children on verbal fluency and the Tags Questions Task. The behavioral indices on each task will be performance on various dimensions of the Tags Question Task and quantitative and qualitative analyses of performance on phonemic and semantic fluency. These studies provide many perspectives from which to track the development of morphosyntactic ability in both of these populations and to evaluate the interaction of these emerging abilities and processing constraints in different linguistic contexts.