بررسي پايايي، روايي و تحليل عاملي مقياس نشخوار خشم در دانشجويان دانشگاه تهران

Reliability, Validity and Factor Analysis of the Anger Rumination Scale

The purpose of this study was to examine the psychometric properties of the Persian version of the Anger Rumination Scale (ARS) including reliability, validity, and exploratory factor analysis. 449 students from Tehran University (234 females, 215 males) took part in this study voluntarily. All participants were asked to complete the ARS, the Tehran Multidimensional Anger Scale (TMAS), and the Mental Health Inventory (MHI-28). The results of exploratory factor analysis supported four factors for the ARS as well as a single general factor of rumination. Content validity of the ARS was calculated according to Kendallʹs coefficients of concordance for ARS subscales including Angry Afterthoughts, Thoughts of Revenge, Angry Memories, and Understanding of Causes as well as ARS total score. All Kendallʹs coefficients of concordance were statistically significant. The convergent and discriminant validity of the ARS were supported by an expected pattern of correlations between the ARS and the measures of trait-anger, state-anger, anger- in, anger-out, anger-control in, anger-control out, psychological well- being, and psychological distress. Test-retest reliability and internal consistency of the ARS were also examined at satisfactory levels. It was concluded that the ARS is a reliable and valid scale to measure anger rumination.