Emotion dysregulation is a unifying dimension of several psychopathological symptoms such as prolonged dysphoria, labile mood, high anger, persistent fear and excessive worry. Deficits in emotion regulation (ER), or emotion dysregulation, appear to be relevant to the development, maintenance, and promising treatment target in a broad range of mental disorders. The Difficulties in Emotion Regulation Scale (DERS) is the most comprehensive measure of emotion dysregulation to date, but the Spanish version has not been validated in adolescents.