Psychometric properties of the Dysexecutive Questionnaire (DEX): a study with Brazilian older adults

Abstract

This study aimed to verify the psychometric properties of the Dysexecutive Questionnaire (DEX) through exploratory factor analysis (EFA), evidence of reliability, and convergent validity, in a sample of neurologically preserved older adults. Participants were 345 older adults who answered, in addition to DEX, a sociodemographic and clinical questionnaire, the Mini-Mental State Examination (MMSE), and two verbal fluency tasks. The EFA was conducted through Parallel Analysis based on the generation of a polychoric correlation matrix, as well as Pearson’s correlation between the DEX scores, age, education, MMSE, and verbal fluency tasks. According to the EFA, the extraction of two factors (“Inhibition” and “Social Regulation and Planning”) was suggested and DEX was negatively associated with age and MMSE. In conclusion, DEX presented a satisfactory factorial structure for older adults, which can be considered a reliable self-report measure for complaints of executive functions.

Fatores De Personalidade E De Resiliência Como Preditores Do Funcionamento Executivo De Adultos Idosos

“…Para validar o conteúdoMacuglia, et al (2016) mencionam que deve ser utilizado o Coeficiente de Validade de Conteúdo (CVC) e o Coeficiente Kappa, sendo que este último apresentou para o Brasil o índice de 0,75. O DEX já apresentou evidências de validade em uma amostra de adultos idosos no Brasil(OLIVEIRA et al, 2021.…”