Psychometric Properties of the Persian Version of Utrecht Grief Rumination Scale.

This study evaluates the Persian version of the Utrecht Grief Rumination Scale (UGRS), developed to assess grief-related rumination. The UGRS, originally validated in Western and Eastern cultures, had not been examined in a Iranian context. The research involved translating the UGRS into Persian, followed by a thorough psychometric evaluation involving 325 bereaved Persian-speaking adults. The Persian UGRS demonstrated strong internal consistency (Cronbach's alpha and McDonald's ω = 0.92) and test-retest reliability (ICC = 0.85). Confirmatory factor analyses supported a second-order hierarchical model of grief rumination. Concurrent validity was affirmed through significant correlations with depression, anxiety, prolonged grief, and PTSD. Known-groups validity highlighted higher rumination levels among individuals with lower education, those who lost close family members, and women. These findings underscore the Persian UGRS's reliability and validity, offering a robust tool for assessing grief-related rumination in the Iranian population.