Psychometric properties of the Generalized Anxiety Disorder Questionnaire for DSM-IV among four racial groups

Christina M Robinson, Suzanne C Klenck, Peter J Norton
Cognitive Behaviour Therapy 2010, 39 (4): 251-61
The Generalized Anxiety Disorder Questionnaire-IV (GAD-Q-IV) is a self-report diagnostic measure of generalized anxiety disorder. Previous studies have established the psychometric properties of the GAD-Q-IV, revealing excellent diagnostic specificity and sensitivity as well as good test-retest reliability and convergent and discriminant validity (Newman et al., 2002). Recent analyses with other measures of anxiety symptoms have revealed differences across racial or national groups. Given that the GAD-Q-IV was tested primarily on Caucasians (78%), the purpose of this study was to demonstrate the psychometric properties of the GAD-Q-IV across four racial groups: African American, Caucasian, Hispanic/Latino, and Asian. A student sample of 585 undergraduate psychology students completed the GAD-Q-IV as well as other measures of anxiety symptoms. A clinical replication sample included 188 participants who completed the GAD-Q-IV as part of a larger psychotherapy study. Results indicated excellent and very similar factor structures in the student sample and similar psychometric properties in both samples across the racial groups. Implications for the use of the GAD-Q-IV across racial groups are discussed.

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