SERIAL POSITION IN AUDITORY VERBAL SHORT-TERM MEMORY AMONG CONDUCTION, BROCA'S AND ANOMIC APHASICS.
Item
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Title
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SERIAL POSITION IN AUDITORY VERBAL SHORT-TERM MEMORY AMONG CONDUCTION, BROCA'S AND ANOMIC APHASICS.
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Identifier
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AAI8222952
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identifier
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8222952
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Creator
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KAUFMAN, GALE.
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Contributor
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Louis J. Gerstman
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Date
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1982
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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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Speech Communication
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Abstract
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The hallmark of conduction aphasia, marked repetition difficulty, has recently been reinterpreted in single case reports as reflecting an underlying auditory-verbal short-term memory (STM) deficit. A probe type STM experiment was conducted to determine if this deficit could be demonstrated in a group of such patients. Experimental subjects were six conduction, six Broca's, and eight anomic aphasics, all with mild linguistic impairments. Controls were seven right brain damaged (RBD) and seven non brain damaged normal subjects. Aphasic impairment and diagnostic category were determined through administration of the Boston Diagnostic Aphasia Examination (BDAE). The STM test consisted of 28 taped lists of high frequency, low associative words, five per trial, spoken at the rate of one per second. Each list was followed by a probe, one of the list words. Subjects stated the word which followed the probe. Target items occurred randomly but equally at positions 2, 3, 4, and 5. Subjects responses were categorized by serial position and error type.;Inter and intra group comparisons were made utilizing Mann Whitney U and Wilcoxon T Tests. Significant results indicated conduction aphasics performed poorer on the STM test than the other aphasics, and their serial position curve lacked a primacy and recency effect. Anomic aphasics displayed the expected U shaped serial position curve, while Broca's aphasics displayed a recency but no primacy effect. All contrasts between normal controls and aphasics were significant as were some contrasts between aphasics an RBD controls. It was determined that conduction aphasics are grossly impaired in short-term memory function relative to other aphasics, and this impairment can not be attributed to an underlying linguistic impairment since conduction aphasics performed only slightly below that of the other aphasics on the BDAE. One conduction aphasic lacked the literal paraphasias typical of this syndrome but performed no differently from the five others. It is concluded that the lack of a serial position effect in the presence of fluent speech and good auditory comprehension is a strong diagnostic indicator of conduction aphasia.
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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.
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Program
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Speech and Hearing Sciences
