Fig. 1

Study procedure. The figure gives an overview of the study procedure. The core battery consisted of a comprehensive set of questionnaires and tasks, however, in the figure, only instruments relevant for the current study are displayed. ACSID-11 Assessment of Criteria for Specific Internet-use Disorders, IGDT-10 Ten-Item Internet Gaming Disorder Test, LPS Leistungsprüfsystem [Performance assessment system], BSI-53 Brief Symptom Inventory, SRHI Self-Report Habit Index, BIS-15 Barratt Impulsiveness Scale – short version.