AICA	Assessment of Internet and Computer Game Addiction
BL	Baseline
CIUS	Compulsive internet use scale
DBT	Dialectical behaviour therapy
DBT-A	Dialectical behaviour therapy for adolescents
DBT-K	Creative dialectical behaviour therapy for adolescents
DO	Dogmas
DT	Distress Tolerance
ER	Emotion regulation
FoMO	Fear of Missing Out
FEEL-KJ	Questionnaire for the evaluation of emotional regulation in children and adolescents (in German: Fragebogen zur Erhebung der Emotionsregulation bei Kindern und Jugendlichen)
ICD-10	10th revision of the International Statistical Classification of Diseases and Related Health Problems
IE	Interpersonal Effectiveness
JTCI	Junior Temperament and Character Inventory
MI	Mindfulness
NE	Negative emotions
PANAS	Positive and negative affect schedule
PE	Positive emotions
PIU	Problematic internet use
SE	Self-esteem
SEKJ	Self-esteem inventory for children and adolescents (in German: Selbstwertinventar für Kinder und Jugendliche)
SEKJ-H	Self-esteem inventory for children and adolescents height subscale
YSR	Youth Self-Report