[Emotion Regulation in Adolescents with Nonsuicidal Self-Injury]. / Emotionsregulation bei Jugendlichen mit Nichtsuizidalen Selbstverletzungen.

Nonsuicidal self-injury (NSSI) is a prevalent and impairing condition that was newly included in DSM-5 in the section III criteria for further research. Difficulties in emotion regulation play an important role in the development and maintenance of NSSI. This study investigated the emotion regulation in female adolescents with NSSI according to DSM-5 (n=55), clinical control adolescents with mental disorders without NSSI (n=30), and nonclinical control adolescents (n=58) using self-report questionnaires and interviews. As expected, results indicated that adolescents with NSSI have significantly more difficulties in emotion regulation compared to healthy controls. In addition, adolescents with NSSI reported also significantly more difficulties in impulse control, lack of emotional clarity, difficulties engaging in goal-directed behavior, and limited access to emotion regulation strategies compared to nonclinical and clinical controls. Adolescents with NSSI felt significantly more often sadness compared to clinical controls (d=0.66) and compared to other emotions. Adolescents with NSSI indicated significantly less often happiness compared to nonclinical controls (d=1.83). Results support that adolescents with NSSI have difficulties in emotion regulation and that these difficulties are even more pronounced than in adolescents with other mental disorders. Clinical implications will be discussed.