Thirdly, symptoms of anxiety will be assessed using the Beck Anxiety Inventory (Beck & Steer, 1993). The BAI has 21 items, each describing a psychological or physiological symptom of anxiety (e.g., "Nervous") that respondents rate on a 0 to 3 Likert Scale ("not at all" to "severely") based on how much they have been bothered by the symptom within the past week. The BAI has been widely used to assess anxiety in adults with mental illness and has been demonstrated to have strong psychometric properties (e.g., Fydrich, Dowdall, & Chambless, 1992).