The purpose of this study was to examine the influence of adolescents’ hostile attribution of intent on
their aggression and the moderating effect of executive function. Surveys were conducted with 283
adolescents in Seoul and Gyeonggi-do province. The results were as follows. Correlation analysis results
showed a significant positive correlation of hostile attribution of intent with reactive aggression and
proactive aggression each. There were significant negative correlations among hostile attribution of intent,
executive function, and subtypes of executive function. Additionally, subtypes of executive function were
significantly and negatively correlated with reactive aggression and proactive aggression each. The
moderating effects of executive function and subtypes of executive function assessed using “Behavior
Regulation Index” and “Metacognition Index” were significant for the relationship between hostile
attribution of intent and reactive aggression. The moderating effects of executive function and subtypes of
executive function assessed using “Behavior Regulation Index” were significant for the relationship between
hostile attribution of intent and proactive aggression. Based on the above results, implications, limitations,
and suggestions for future studies were discussed.