The Difficulties in Emotion Regulation Scale-Positive (DERS-Positive; Gratz, 2002 ) is a 15-item self-report measure developed to assess clinically relevant difficulties in the regulation of positive emotions. This measure was modeled after the original DERS (Gratz & Roemer, 2004 ), with items modified to assess difficulties stemming from the experience of positive emotions (vs. negative emotions). Specifically, rather than beginning with the stem “When I’m upset” like many of the original DERS items, the DERS-Positive items begin with the stem “When I’m happy.” DERS-Positive items were chosen to reflect difficulties within the following dimensions of emotion regulation: (a) acceptance of positive emotions; (b) ability to engage in goal-directed behavior when experiencing positive emotions; and (c) ability to control impulsive behaviors when experiencing positive emotions. Participants are asked to indicate how often the items apply to themselves, with responses ranging from 1 to 5, where 1 is almost never (0–10%), 2 is sometimes (11–35%), 3 is about half the time (36–65%), 4 is most of the time (66–90%), and 5 is almost always (91– 100%). Higher scores indicate greater difficulties in the regulation of positive emotions.