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Amnesic patients' impaired category exemplar production priming

Published online by Cambridge University Press:  01 November 1998

LAIRD S. CERMAK
Affiliation:
Memory Disorders Research Center, Boston University School of Medicine and Department of Veterans Affairs Medical Center, Boston
BONNIE M. WONG
Affiliation:
Memory Disorders Research Center, Boston University School of Medicine and Department of Veterans Affairs Medical Center, Boston

Abstract

This study examined the effect of varying the number of potential target words on amnesic patients' category exemplar production performance. In Experiment 1, 4 words from each of 6 categories were presented to amnesic patients and normal control participants. This was followed by an indirect task in which each participant produced the first 8 words that came to mind when presented with a category cue. On this task the amnesic patients were impaired. This outcome stands in sharp contrast to most other category exemplar production tasks that have been reported. However, these other paradigms tend to restrict participants' processing during target item presentation while our procedure allowed them to analyze the target words as they chose. Our procedure may have allowed the control participant more opportunity to “cluster” target words from the same category during list presentation and this, in turn, may have given them an advantage at the time of category exemplar production. Therefore, in Experiment 2, only 1 word per category was presented in the target list and only 2 words per category were requested during category exemplar production. Surprisingly, the amnesic patients still exhibited impaired performance. Therefore, it was suggested that perhaps amnesic patients' known inability to perform semantic levels of processing during individual target word presentation may have resulted in impaired priming for categorical features for these patients. (JINS, 1998, 4, 576–583.)

Type
Research Article
Copyright
© 1998 The International Neuropsychological Society

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