Avaliação psicométrica do questionário de aceitação e ação-II e aferição do impacto do estresse no bem-estar psicológico a partir da inflexibilidade psicológica

Abstract

This study evaluated the psychometric properties of the Acceptance and Action Questionnaire- II (AAQ-II) and the impact of stress on psychological well-being (BEP), considering psychological inflexibility (PI) as a mediator, among people who undergo or have undergone psychotherapy. or psychiatric treatment. Results showed N=1,128 between 18 and 65 years old, recruited from 40,000 emails sent to UFBA undergraduates. The sociodemographic questionnaire, AAQ-II, WHO-5 and the DASS-21 stress subscale were used. The AAQ-II showed high data factorability (KMO = 0.91), internal consistency (GLB = 0.92, Cronbach's alpha = 0.89) and Weighted Root Mean Square Residual (WRMR = 0.061). It showed unidimensional congruence values (I-UniCo > 0.95, I-ECV > 0.85) and a problematic residual index (IREAL) only for item 2. The factorial solution showed a satisfactory fit (X2 = 267.21 , RMSEA = 0.077, NNFI = 0.97, CFI = 0.98, AGFI = 0.99), with all factor loadings greater than 0.30, with the exception of one item (0.28). The reliability of the other scales used was evaluated and the mediation model was tested for total and indirect effect. Next, data were analyzed by type of treatment received, using the t-test, MANOVA (p-value/Bonferroni) and confidence interval (Cohen's d). The results indicated that the AAQ-II has satisfactory psychometric properties in this sample and that PI mediates the relationship between stress and BEP. Therefore, a high level of stress is associated with lower BEP due to the presence of IP. Having undergone or undergoing psychotherapy or psychiatric treatment decreases PI.