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Revista de Neuro-Psiquiatría
versão impressa ISSN 0034-8597
Resumo
PEREZ-RAMOS, Ysela J.. Explanatory model of cognitive functioning in aging. Rev Neuropsiquiatr [online]. 2024, vol.87, n.2, pp.143-152. Epub 28-Jun-2024. ISSN 0034-8597. http://dx.doi.org/10.20453/rnp.v87i2.5086.
Objective:
To validate an explanatory model of cognitive functioning in older adults, based on inhibitory control, working memory and processing speed.
Method:
Explanatory-correlational design. 128 people between 60 and 85 years of age were evaluated with working memory and processing speed tests of the WAIS-IV intelligence scale, Stroop Test and Neuropsi.
Results:
Two models of structural equation analysis were applied. In model 1, with the total sample, inhibitory control better explains the cognitive functioning in adults aged 60 to 85 years (β=0.22; p<0.538). Model 2, which included age as a control variable, divided the sample into two age groups, and found that processing speed best predicted cognitive functioning in adults aged 60-70 years (β=2.329; p=0.030). but no variable predicted cognitive functioning in adults aged 71 to 85 years. The second model showed better fitting indices (CMIN/DF= 1.352; GFI = .950; CFI = .983 and RMSEA=.053).
Conclusions:
Inhibitory control and processing speed explain cognitive functioning during aging, but in different age groups, which validates the explanatory model that includes age as a control variable
Palavras-chave : cognitive functioning; aging; processing speed; inhibitory control; working memory.