Psychometric Properties of the Persian Version of the Mistake Rumination Scale

Rumination is defined as a set of repeated thoughts Related to negative moods or events and is effective as a maladaptive cognitive emotion regulation strategy in various disorders such as depression. Considering that the Mistake Rumination Scale (MRS) has not been validated for Iranian population, this study aims to investigate the psychometric properties of the Persian version of MRS in the Iranian population.

The study population includes all people aged 18-60 years in Iran. The study samples were 270 people who were selected by a convenience sampling method after an online invitation from November to December 2022. To evaluate the convergent and divergent validity, the 16-item difficulties in emotion regulation scale, the 21-item Depression, Anxiety, and Stress scale, and the multidimensional perfectionism cognitions inventory were used. The factor structure of the questionnaire was examined through confirmatory factor analysis. Reliability was determined using Cronbach’s alpha coefficient and the test-retest method. The data was analyzed in SPSS software, version 25 and LISREL software, version 8.8.

The results of the confirmatory factor analysis confirmed Four factors: Psychological, psychological, economic and social. Cronbach’s alpha coefficient was equal to 0.93 and the four-week test-retest reliability was equal to 0.89. The correlation coefficients indicated favorable convergent and divergent validity of the Persian MRS (P<0.001).

The Persian MRS is a reliable and valid tool for measuring mistake rumination in the Iranian population.