Document Type : Original Article
Purpose: This study aimed to determine the mediating role of perseverative thinking in relationship between perfectionism and generalized anxiety disorder.Methodology: In this study we used descriptive-correlation method. Among all of the patients withgeneralized anxietydisorder in Qazvin in 1394, 221patientsofRazi hospital thathad thecharacteristics ofgeneralized anxietydisorder were chosen by targeted judgment Sampling. Data was collected by using Flett and Hewitt Perfectionism Scale (1991), Spitzer generalized anxiety scale (2006), and Ehring perseverative thinking questionnaires (2010) and analyzed by Structural Equation Modeling.Results: Data analysis showed that perseverative thinking mediates the relationship between perfectionism and generalized anxiety disorder.The direct effect ofperfectionism on perseverative thinking, and the direct and indirect effect of perfectionism on generalized anxiety disorderwas approved.Conclusion: Perfectionism and perseverative thinking have predictor roles on generalized anxiety disorder. The perfectionists with perseverative thinking trait, incur more generalized anxiety disorder. In treatment plannings for generalized anxiety disorder, specially should be considered to perfectionism and perseverative thinking that are propounded as transdiagnostic processes.