Chanvit PornnoppadolWoraphat Ratta-aphaSirinda ChanpenSupattra WattananondNootchanet DumrongrungruangKanthip ThongchoiSuphaphorn PanchasilawutBenyapa WongyuenApakorn ChotivichitJuntira LaothavornAsara VasupanrajitFaculty of Medicine, Siriraj Hospital, Mahidol UniversityEmory University2019-08-282019-08-282018-01-01International Journal of Mental Health and Addiction. (2018)15571882155718742-s2.0-85055337658https://repository.li.mahidol.ac.th/handle/20.500.14594/47140© 2018, Springer Science+Business Media, LLC, part of Springer Nature. The present study is a quasi-experimental, prospective study of interventions for internet gaming disorder (IGD). One hundred four parents and their adolescent children were enrolled and allocated to one of the four treatment groups; 7-day Siriraj Therapeutic Residential Camp (S-TRC) alone, 8-week Parent Management Training for Game Addiction (PMT-G) alone, combined S-TRC and PMT-G, and basic psychoeducation (control). The severity of IGD was measured by the Game Addiction Screening Test (GAST). The mean difference among groups in GAST scores was statistically significant, with P values of < 0.001, 0.002, and 0.005 at 1, 3, and 6 months post-intervention, respectively. All groups showed improvement over the control group. The percentage of adolescents who remained in the addicted or probably addicted groups was less than 50% in the S-TRC, PMT-G, and combined groups. In conclusion, both S-TRC and PMT-G were effective psychosocial interventions for IGD and were superior to basic psychoeducation alone.Mahidol UniversityMedicineSCOPUS10.1007/s11469-018-9995-4