Anorexia nervosa is a disorder characterized by much mental and physical suffering, as exemplified by a high overall mortality rate (Papdopoulos, Ekborn, Brandt, & Ekselius, 2009) and elevated suicidal behavior . Accordingly, several studies have identified that eating-disordered behaviors (including binge eating, purging, and other weight-loss behaviors) may reduce negative emotion (NE) and negatively reinforce such behavior (Berg et al., 2013;Fairburn, Cooper, & Shafran, 2003;Smyth et al., 2007). However, in focusing on NE, researchers and clinicians have often overlooked the potential role of problems with positive emotion (PE) in anorexia. Empirical research has indicated that PE and NE may be more accurately described as bivariate rather than as existing on a unipolar scale (Larsen, McGraw, & Cacioppo, 2001), which suggests that even amid pervasive NE, PE can also be experienced. Along these lines, calls have been made to examine the neglected role of positive reinforcement in initiating and maintaining weight-loss activities in anorexia (Walsh, 2013). These activities include overt weight-loss behaviors, such as restriction, vomiting, laxative use, and exercise, as well as self-evaluation activities, such as weigh-ins and checking 512794C PXXXX10.