Controlled priming effects via manipulating the relatedness proportion in nonfluent aphasia.
Item
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Title
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Controlled priming effects via manipulating the relatedness proportion in nonfluent aphasia.
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Identifier
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AAI9325072
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identifier
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9325072
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Creator
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Bushell, Camille Marie.
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Contributor
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Adviser: David Swinney
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Date
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1993
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Language
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English
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Publisher
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City University of New York.
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Subject
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Education, Educational Psychology | Psychology, Clinical | Health Sciences, Speech Pathology
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Abstract
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This project examines the claim in the neuropsychology literature that Broca's-type aphasic adults demonstrate controlled processing (the ability to develop strategies for word recognition of semantically related word pairs). The most prominent work supporting the existence of controlled processing in this population is that of Milberg and Blumstein (1981) who used a semantic judgment task to measure controlled processing. However, the examination of this question is more optimally accomplished by use of a priming paradigm with a lexical decision task as this paradigm better isolates component processes underlying word recognition. In the work presented here, relatedness proportion is manipulated to evoke expectancy-based strategies. The results suggest that Broca's aphasics do not demonstrate controlled processing. That is, they do not demonstrate an increase in priming as relatedness proportion increases. Instead it seems the Broca's subjects tend to show inhibition effects for related word pairs. These results are discussed in terms of prospective and retrospective semantic processes that are believed to be dissociable in the model of normal lexical access.
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Type
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dissertation
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Source
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PQT Legacy CUNY.xlsx
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degree
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Ph.D.
