Three verbal fluency tasks: Normative data and convergent validity in Argentines over 50 years

Verbal fluency tasks are frequently used in neuropsychological assessment, standing out for their easy application and good sensitivity to early cognitive impairment. However, in Argentina, the availability of updated norms is limited, especially for the action fluency variant. There is also little...

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Bibliographic Details
Published in:Dementia & neuropsychologia 2022-12, Vol.16 (4), p.481-488
Main Authors: Martino, Pablo, Cervigni, Mauricio, Portillo, Nelson, Gallegos, Miguel, Politis, Daniel, Bortoli, Miguel Ángel De, Vivas, Jorge
Format: Article
Language:English
Subjects:
Argentina
CLINICAL NEUROLOGY
GERIATRICS & GERONTOLOGY
HEALTH CARE SCIENCES & SERVICES
Language
MEDICINE, GENERAL & INTERNAL
Neuropsychological Tests
NURSING
Original
PSYCHIATRY
PSYCHOLOGY
Reproducibility of Results
Speech
Verbal Fluency
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Summary:Verbal fluency tasks are frequently used in neuropsychological assessment, standing out for their easy application and good sensitivity to early cognitive impairment. However, in Argentina, the availability of updated norms is limited, especially for the action fluency variant. There is also little evidence of validity. The aim of this study was to obtain Argentine norms for three verbal fluency tasks and to analyze their convergent validity. Using a nonprobability sampling method, 303 Argentines from a nonclinical population (age mean=66.8, 50-91 years) were recruited to participate in this study. Those with medical conditions that could compromise neuropsychological performance were excluded. Three verbal fluency tasks (i.e., phonological, semantic, and action), the Montreal Cognitive Assessment (MoCA) test, and the Digit Span-WAIS III test were administered. Correlations and multiple regressions were subsequently performed. Education and age significantly explained 11.8% of the variance in phonological fluency, 15.8% of the variance in semantic fluency, and 20.2% of the variance in action fluency. Hence, the normative data varied according to educational level and age group, with normal performance limit values between 9 and 14 for phonological fluency, 11 and 18 for semantic fluency, and 8 and 17 for action fluency. Positive correlations were obtained between all verbal fluency tasks, as well as between the MoCA test and the Digit Span test. This study supports the applicability of three verbal fluency tasks in an Argentine context by providing age- and education-corrected norms and acceptable evidence of convergent validity.
ISSN:1980-5764
1980-5764
DOI:10.1590/1980-5764-dn-2022-0026