KMID : 0921420120170020322
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Korean Journal of Communication Disorders 2012 Volume.17 No. 2 p.322 ~ p.337
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Comprehension of Active and Passive Sentences in Korean Aphasics: Evidence for Processing Deficit Hypothesis
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Choi So-Young
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Abstract
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Background & Objectives : Several models of comprehension deficits in agrammatic aphasia rely on structural impairments in syntactic representations. However, recent studies have found that there are differences in aphasics¡¯ sentence-processing routines depending on the reason for the processing deficit. Therefore, the purpose of this study is to present reasons for using a particular processing approach based on the language-specific characteristics of Koreans.
Methods: In order to compare individuals¡¯ sentence-comprehension abilities, this study measured the accuracy and reaction times (RT) of 16 aphasic patients (AP) and 16 normal controls (NC) during a sentence-picture matching task. In comparison with the ¡°morphological passive¡± where a suffix is used, the ¡°semantic passive¡± consists of sentences derived solely from a verb that has passive meaning properties (ex: ¡°danghada¡± means ¡°undergo something¡±).
Results: Both groups showed higher error rates and longer RT in the passive condition irrespective of sentence type (morphological/semantic). These results indicate that a high aptitudeis needed in order to understand passive expressions and the frequency of usage was considered one of the possible factors affecting these results.
Discussion & Conclusion: The results of this study suggest that the aphasic impairment of sentence comprehension can be explained by aprocessing deficit rather than agrammar-oriented hypothesis.
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KEYWORD
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aphasia, sentence comprehension, processing deficit hypothesis, Korean
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