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Phonological and semantic strategies in a letter fluency task for people with Alzheimer’s disease

Title
Phonological and semantic strategies in a letter fluency task for people with Alzheimer’s disease
Authors
Lim Y.Sung J.E.Park J.Yoo Y.R.
Ewha Authors
성지은
SCOPUS Author ID
성지은scopus
Issue Date
2022
Journal Title
Frontiers in Psychology
ISSN
1664-1078JCR Link
Citation
Frontiers in Psychology vol. 13
Keywords
Alzheimer’s diseaseletter fluencyphonological strategysemantic relatednesssemantic strategy
Publisher
Frontiers Media S.A.
Indexed
SSCI; SCOPUS WOS scopus
Document Type
Article
Abstract
Objectives: This study investigated whether employing a phonological or semantic strategy elicited a better performance on a letter fluency task for people with Alzheimer’s disease (AD). Methods: Sixty participants with probable AD were extracted from the DementiaBank database. After applying exclusion criteria, 47 participants were included in the final analysis. We used phonological and semantic strategies to analyze participants’ responses to the letter fluency task. The phonological strategy analysis was based on the number of switches and the mean cluster size, and the semantic strategy analysis was based on semantic relatedness, which quantified word-similarity change by adapting the concept of persistence length from analyses of DNA and protein structures. We employed Pearson correlation coefficients to determine whether any strategy indexes were significantly related to the number of correct responses and used stepwise multiple regression analyses to determine the best predictor. Results: Participants who relied on phonological strategy performed better on the letter fluency task. The number of correct responses was significantly positively correlated with phonological strategy but significantly negatively correlated with semantic strategy. The number of switches, mean cluster size, and semantic relatedness were all significant predictors, explaining 68.1% of the variance. Conclusion: Our results suggested that individuals with AD who engaged in phonological strategy performed better on the letter fluency task than those who relied on semantic strategy. Copyright © 2022 Park, Yoo, Lim and Sung.
DOI
10.3389/fpsyg.2022.1053272
Appears in Collections:
사범대학 > 언어병리학과 > Journal papers
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