Introduction: Psychological flexibility is a trans-diagnostic construct which includes a range of intra- and inter-personal skills. The multidimensional psychological flexibility inventory (MPFI) is a 60-item self-report measure, asses all 12 processes of psychological flexibility and inflexibility. According to drawbacks of common psychological flexibility scales, the present study was conducted with the aim of Psychometric examination Persian version of MPFI.
Materials and methods: The studied samples were randomly selected from students of Kashan University of medical sciences in 2020-2021 academic year. The tools used included: Stress-Anxiety-Depression Questionnaire (DASS-21), Experiential Avoidance Questionnaire (AAQ-II), Five Factor Mindfulness Questionnaire (FFMQ-39), and Psychological Flexibility Questionnaire (MPFI). Data were analyzed by AMOS-22 and SPSS-26 using Cronbach's alpha coefficient, Pearson's correlation coefficient, confirmatory and exploratory factor analysis were used.
Results: The results of confirmatory factor analysis did not confirm the initial model of the questionnaire, and exploratory factor analysis showed a 10-factor structure of the MPFI questionnaire. Also, the results showed that all the factors related to the flexibility component, except the acceptance factor, as well as the total score of the flexibility component, have a significant negative relationship with the AAQ-II questionnaire. But all the factors related to this component had a significant positive relationship with the total score of the FFMQ-39 questionnaire. In the psychological inflexibility component, the results indicated positive correlation of all factors with AAQ-II questionnaire and negative correlation with FFMQ-39 questionnaire. The factors related to the psychological flexibility component had a significant negative relationship with anxiety, depression and stress, and the factors related to the psychological inflexibility component had a positive relationship with them.
Conclusion: With the confirmation of construct validity, concurrent validity, convergent content, and retest reliability in the Persian version of this scale, it can be used in extensive research and clinical work.