Psychometric properties of the Persian version of the Core Beliefs Questionnaire (CBQ)

The Core Beliefs Questionnaire (CBQ) has three versions (Trait, Contingent, Other) that assess different levels of beliefs about the self. The current study translated these CBQ versions into Persian and psychometrically evaluated these measures. A student sample (n = 289) and a sample of individuals with depression (n = 60) completed the CBQ and other measures of interest. In both samples, a 17-item one-factor model emerged for all CBQ versions, and each version had good internal consistency. Good test–retest reliability of the CBQ versions was evident in the student sample. The CBQ versions had stronger associations with depression than with social anxiety in the student sample and demonstrated strong associations with depression in the sample with depression. The sample with depression had higher scores on the CBQ compared to the student sample. These findings indicate the potential of these measures in research and clinical contexts to further our understanding of core beliefs in the Iranian population.