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Brown, T.A. Confirmatory factor analysis of the Penn State Worry Questionnaire: Multiple factors or method effects? Behavior Research and Therapy (2003) 41, 1411-14226.
Fresco, D.M., et. al. ( 2003) Using the Penn State Worry Questionnaire to identify individuals with Generalized Anxiety Disorder: a receiver operating characteristic analysis. Journal of Behavior Therapy and Experimental Psychiatry. 34, 283-291.
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Primary use / Purpose:
Worry is regarded as a dominant feature of GAD. Since its development in 1990, the PSWQ has become a widely used self-report tool for pathological worry and GAD. The PSWQ attempts to measure the excessiveness, generality, and uncontrollable dimensions of worry.
The PSWQ has shown to possess high internal consistency and good test-retest reliability (Meyer et al., 1990).