Saeed Nasiry - Department of Clinical Psychology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Mohammad Noori - Department of Clinical Psychology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Objective: Previous research has shown that attentional bias toward game-related stimuli is a significant factor in the etiology, maintenance, and severity of internet gaming disorder (IGD). Therefore, interventions targeting attentional bias toward game-related stimuli can potentially ameliorate this disorder. The present research aims to examine the effectiveness of online Attentional Bias Modification (ABM) training in reducing game-related attentional bias and the severity of IGD in adolescents. Methods: In this quasi-experimental study, ۳۳ adolescents with a DSM-۵ diagnosis of IGD were sampled and randomly assigned to an experimental group (n=۱۷) and a control group (n=۱۶). The experimental group received online ABM, while no intervention was delivered to the control group. Attentional bias and IGD severity in these two groups were measured at pretest and posttest phases and then at ۲ months follow-up via a modified Stroop test and internet gaming disorder-۲۰ (IGD-۲۰) questionnaire. Two-way repeated measures analysis of variance and Fisher’s Least Significant Difference (LSD) were implemented to analyze the data using SPSS software, version ۲۶. Results: Game-related attentional bias and the severity of IGD were significantly decreased in the participants of the experimental group (P<۰.۰۵). The reductions were also maintained at the ۲-month follow-up, whereas such reductions were not evident in the control group at any stage (P>۰.۰۵). Conclusion: Given our findings, it can be concluded that online ABM can be an auxiliary or standalone treatment for adolescents with IGD; further research is necessary to understand its mechanisms of effect.

Attentional bias modification, Internet gaming disorder, Modified Stroop test, Online intervention, Adolescents