Document Type : Original Article


1 Department of Health Education and Health Promotion, School of Health, Birjand University of Medical Sciences

2 Social Determinants of Health Research Center, Birjand University of Medical Sciences, Birjand, Iran

3 Department of Health Education and Health Promotion, School of Health, Birjand University of Medical Sciences, Social Determinants of Health Research Center, Birjand University of Medical Sciences, Birjand, Iran


BACKGROUND: Teenagers are increasingly interested in computer games, and the adverse effects
of these games are dependent on the execution of these games. The theory of planned behavior
(TPB) is one of the most important theories in behavior change. This study aimed to determine the
effect of educational planning based on TPB on the level of dependence on computer games in high
school male students in Gonabad, Iran.
MATERIALS AND METHODS: This was a randomized controlled trial. The study population was
students of computer games in Gonabad. Sixty-four students were selected by a multistage random
sampling method and were randomly divided into intervention (n = 32) and control (n = 32) groups.
Data-gathering tool was the standard questionnaire of computer game dependency and researchermade questionnaire according to TPB constructs that were completed before, immediately, and
3 months after the intervention. The intervention consisted of eight 90-min training sessions. Data
were analyzed using the Chi-square test, Fisher’s, t-test, repeated measures ANOVA, and Bonferroni
post hoc test.
RESULTS: Before the intervention, the intervention and control groups were matched for the mean
score of model constructs. However, after the intervention, the mean score of computer game
addiction significantly decreased (≤0.001). However, the mean score of knowledge, attitude,
perceived behavioral control, and behavioral intention increased, which was statistically significant.
Furthermore, the mean changes of model structures were statistically significant (P < 0.05).
CONCLUSION: The findings revealed that TPB can be used as a good theoretical framework for
designing and implementing educational programs to reduce the dependency of computer games
on students.


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