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Repetitive verbalization in Alzheimer’s disease

Abstract : Repetitive verbalization in Alzheimer’s disease (AD) refers to the tendency of AD patients to repeat the same story/question to the same listener.Aim: Our study assessed whether this verbal perseveration might be related to episodic memory decline, values of teaching, inhibitory decline, and/or decline in cognitive theory of mind.Methods & Procedures: Thirty mild AD patients and 33 control older adults were asked to perform four verbal fluency tasks, and repeated words were retained as an index of repetitive verbalization. Participants were also administered the Grober and Buschke episodic memory task, scales of values of teaching, the Hayling inhibition task, and the false-belief task for the cognitive theory of mind.Outcomes & Results: Results showed more repetitive verbalization in AD patients than in control older adults. Repetitive verbalization was significantly correlated with inhibition and episodic memory in AD patients. As for control older adults, repetitive verbalization was significantly correlated with values of teaching and inhibition. Regression analyses showed that repetitive verbalization was significantly predicted by inhibition in AD patients and values of teaching in control older adults.Conclusions: Repetitive verbalization may reflect the difficulty in inhibiting irrelevant stimuli in AD patients, but it may serve as a tool to ensure transmission of personal knowledge in normal aging. Our findings suggest distinct functions of repetitive verbalization in normal aging and AD.
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http://hal.univ-nantes.fr/hal-03343542
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Submitted on : Tuesday, September 14, 2021 - 11:28:07 AM
Last modification on : Wednesday, September 15, 2021 - 3:25:18 AM

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Marine Lozachmeur, Karim Gallouj, Mohamad El Haj. Repetitive verbalization in Alzheimer’s disease. Aphasiology, Taylor & Francis (Routledge), 2018, 33 (9), pp.1083-1094. ⟨10.1080/02687038.2018.1532069⟩. ⟨hal-03343542⟩

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