Purpose: The addicted to online games is increasing, and 
considering its negative consequences, the present research was 
conducted with the aim of determining the effect of anger control 
education on decreasing anger and anxiety and increasing social 
adjustment of students addicted to online games.
Materials and Methods: This study in terms of purpose was 
applied and in terms of implementation method was semiexperimental with a pre-test, post-test and follow-up design with a 
control group. The research population was the fifth grade students 
of district 2 of Sari city in the 2021-22 academic years. The sample 
size based on G Power software for each group was determined 15 
people, who this number was selected by purposive sampling 
method and by random method replaced into two experimental and 
control groups. The experimental group 12 sessions of 90 minute 
underwent the anger control education, and during this time the 
control group did not receive any education. The research tools were 
the addiction to online games questionnaire (Wang and Chang, 
2002), children's anger inventory (Nelson and Finch, 2000), 
children's anxiety scale (Spence, 1997) and children's social 
adjustment scale (Dokhanchi, 1998) and the data were analyzed by 
methods of variance analysis by repeated measurement and 
Bonferroni post hoc test in SPSS-26 software.
Findings: The findings showed that the anger control education 
decreased the anger and anxiety and increased the social adjustment 
of students addicted to online games, and the results remained in the 
follow-up phase (P<0.001).
Conclusion: The results of this research indicated the effect of anger 
control education and its permanence on decreasing anger and 
anxiety and increasing social adjustment of students addicted to 
online games. Therefore, professionals and therapists can use anger 
control education along with other treatment methods to improve 
psychological characteristics, especially to decrease the anger and 
anxiety and increase the social adaptation.