Generalized Anxiety Disorder 7-item scale (GAD-7; Spitzer, Kroenke, Williams & Löwe, 2006)
The GAD-7 assesses GAD symptoms, asking participants to indicate how often they experience symptoms such as “feeling nervous, anxious, or on edge” or “trouble relaxing” over the last 2 weeks. The 7 items are scored on a Likert scale with scores of 0 representing “not at all”, to 3 “nearly every day” . Thus, scores range from 0 to 21, with scores of 10 or above considered indicative of a diagnosis of GAD. Evidence supports the reliability and validity of the GAD-7 in both clinical and general population samples (Löwe et al., 2008).