The Von Restorff Effect in the Brazilian Version of the Rey Auditory Verbal Learning Test in an Elderly Population

Overview

Journal Dement Neuropsychol

Date 2019 May 11

PMID 31073384

Authors

Gabriel Lima

Alina Teldeschi

Natalia Oliveira

Camila Bernardes

Claudia Drummond

Naima Assuncao

Tiago Bortolini

Paulo Mattos

Affiliations

Soon will be listed here.

Abstract

Objective: To investigate: a) the presence of the isolation effect in elders tested with the new Brazilian Portuguese version of the Rey Auditory Verbal Learning Task (RAVLT) in which a word with potential emotional weight (mother) was introduced; b) whether isolation effects persist in memory disorders of different degrees of severity (Mild Cognitive Impairment [MCI]; Alzheimer's Dementia [AD]).

Methods: The RAVLT was administered to 287 consecutive volunteers. Individuals underwent medical and neuropsychological evaluation and were further sub-grouped into normal controls (n=114), MCI (n=87) and AD (n=86) patients. One-way analysis of variance (ANOVA) and Chi-squared tests were performed. Tukey analysis was conducted to assess significance of group differences.

Results: There were significant group effects on the learning curve. A W-shape - instead of the classical U-shape - was found for the serial position curve in all groups.

Conclusion: The new Brazilian version of the RAVLT exhibited the Von Restorff effect, where this phenomenon was evident not only in older adults but also patients with MCI and AD, providing further psychometric measures for inter-group analyses.

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