期刊
JOURNAL OF ADULT DEVELOPMENT
卷 18, 期 3, 页码 144-154出版社
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10804-010-9107-6
关键词
Aging; Verbal fluency; Clustering and switching across time
The aim of this study was to determine whether verbal knowledge can compensate for the age-related decline in word production during a fluency test. We assessed the performance of 20 young and 20 old subjects in standard letter and semantic fluency tasks over time (T1: 0-30 s vs. T2: 31-60 s). The number of words produced, switching, and clustering components (Troyer et al. Neuropsychology, 11(1): 138-146, 1997) were investigated. Correlations between age and cognitive factors (processing speed, executive functions, and vocabulary level) were analyzed. The results revealed a knowledge compensation mechanism in elderly subjects, but only in letter fluency productions. It only occurred during the second period and was related to an increase in the clustering component and a positive correlation between age and vocabulary level. The differences between letter and semantic fluency performances are discussed in terms of the nature of the non-semantic and semantic components involved in these tasks.
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