A brief, freely available DSM-aligned measure of generalised anxiety severity. Validated across clinical and population samples. Also sensitive for panic disorder, social anxiety, and PTSD at higher cut-off scores.
Spitzer, R.L., Kroenke, K., Williams, J.B.W., & Löwe, B. (2006). A brief measure for assessing generalized anxiety disorder. Archives of Internal Medicine, 166(10), 1092–1097.
Free access to 2023+ psychometric scales at PsychScales