psychometric properties of the persian version of co-rumination questionnaire

Background: although growing studies support features of corumination as a vulnerability factor in internalizing symptoms and positive factor in friendship, little attention has been paid to the psychometric properties of the corumination questionnaire (crq). objectives: this study aimed to determine the psychometric properties of the persian version of this questionnaire.methods: this research is a descriptiveexploratory study and 550 high school students who were selected by random cluster sampling from schools in tehran. they completed crq, beck depression inventoryii (bdiii), and ruminative response scale (rrs) from winter 2014 to summer 2015. construct validity, internal consistency reliability, and factor structure were investigated.results: the factor analysis identified two interpretable factors with the eigenvalue higher than 2. the results from concurrent validity measurement in the current study showed that corumination has a positive correlation with depression signs (p lt; 0.01) and rumination response style (p lt; 0.01). the crq validity was determined using the halfsplit method employing spearmanbrown (0.82) and guttman correlation test (0.81) and internal consistency (0.90). according to these values, this questionnaire has acceptable internal consistency reliability.conclusions: the persian version of crq has reliability and validity for assessing corumination among adolescent participants. this study provides primary evidence on the applicability of the persian version of the crq in the iranian population.