Covariates of production and perseveration on tests of phonemic, semantic and alternating fluency in normal aging

Henry, Julie D. and Phillips, Louise H. (2006) Covariates of production and perseveration on tests of phonemic, semantic and alternating fluency in normal aging. Aging, Neuropsychology and Cognition, 13 3 & 4: 529-551. doi:10.1080/138255890969537


Author Henry, Julie D.
Phillips, Louise H.
Title Covariates of production and perseveration on tests of phonemic, semantic and alternating fluency in normal aging
Journal name Aging, Neuropsychology and Cognition   Check publisher's open access policy
ISSN 1382-5585
1744-4128
Publication date 2006
Year available 2006
Sub-type Article (original research)
DOI 10.1080/138255890969537
Volume 13
Issue 3 & 4
Start page 529
End page 551
Total pages 23
Place of publication Sussex, United Kingdom
Publisher Psychology Press
Collection year 2007
Language eng
Formatted abstract
Standard measures of phonemic and semantic fluency, as well as fluency measures that impose additional demands upon set-switching were administered to younger and older adults. No age effect was found for total output on semantic fluency, while older participants generated significantly more responses relative to their younger counterparts on the phonemic measure. However, older adults made significantly more perseverative errors on both these measures. For tests of alternating fluency, only where participants were required to switch between two semantic dimensions, was an age deficit observed. Although the correlation between phonemic repetitions and age remained significant when performance on the Digit Symbol Test or a measure of fluid intelligence was partialled out, age effects for semantic repetitions and semantic alternating fluency were substantially reduced. The age benefit for number of correct responses upon phonemic fluency was significantly attenuated when a measure of crystallized intelligence was entered as a control variable. The theoretical and practical implications of these results are discussed.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ
Additional Notes Neuropsychology, Development and Cognition. Section B: Aging, Neuropsychology and Cognition

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Psychology Publications
 
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Created: Mon, 18 Apr 2011, 16:06:51 EST by Lucy O'Brien on behalf of School of Psychology