期刊
COGNITIVE NEUROPSYCHOLOGY
卷 25, 期 4, 页码 463-492出版社
ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD
DOI: 10.1080/02643290701674851
关键词
word production; lexical frequency; age of acquisition; hierarchical multinomial logistic regression; aphasia
资金
- National Institutes of Health [DC000191, HD44458, MH1819990]
- EUNICE KENNEDY SHRIVER NATIONAL INSTITUTE OF CHILD HEALTH &HUMAN DEVELOPMENT [R01HD044458] Funding Source: NIH RePORTER
- NATIONAL INSTITUTE ON DEAFNESS AND OTHER COMMUNICATION DISORDERS [F32DC000191, R01DC000191, K23DC000191] Funding Source: NIH RePORTER
Some theories of lexical access in production locate the effect of lexical frequency at the retrieval of a word's phonological characteristics, as opposed to the prior retrieval of a holistic representation of the word from its meaning. Yet there is evidence from both normal and aphasic individuals that frequency may influence both of these retrieval processes. This inconsistency is especially relevant in light of recent attempts to determine the representation of another lexical propertyage of acquisition or AoAwhose effect is similar to that of frequency. To further explore the representations of these lexical variables in the word retrieval system, we performed hierarchical, multinomial logistic regression analyses of 50 aphasic patients' picture-naming responses. While both log frequency and AoA had a significant influence on patient accuracy and led to fewer phonologically related errors and omissions, only log frequency had an effect on semantically related errors. These results provide evidence for a lexical access process sensitive to frequency at all stages, but with AoA having a more limited effect.
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