Cognitive correlates of perseverations in individuals with memory impairment

Gitit Kavé*, Jeremia Heinik

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Objective: This study examines which cognitive measure best accounts for perseverations in individuals with memory impairment. Method: The sample included 85 individuals, of whom 21 had subjective memory concerns, 27 had mild cognitive impairment, and 37 had Alzheimer's disease. Participants produced responses on a semantic category fluency task and on the ideational fluency (IF) task from the Cambridge Cognitive Examination-Revised. Measures of word finding, working memory, and abstract thinking were also assessed. Results: Significant group differences in percentage of perseverations emerged on both tasks. No cognitive measure accounted for the percentage of perseverations on the semantic fluency task. A measure of abstract thinking was the best predictor of the percentage of perseverations on the IF task, followed by a measure of working memory. Conclusions: The underlying cognitive mechanisms that lead to perseverations differ across tasks, with perseverations on the IF task reflecting both conceptual deficits and working memory limitations.

Original languageEnglish
Pages (from-to)63-70
Number of pages8
JournalArchives of Clinical Neuropsychology
Volume32
Issue number1
DOIs
StatePublished - 1 Feb 2017

Keywords

  • Alzheimer's disease
  • Dementia
  • Mild cognitive impairment
  • Verbal fluency

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