During adolescence, stress arising from having to engage in after-school club activity( club activity stress )is one of the causes of school maladjustment. However, most studies have focused on specific demographic variables as predictors of club activity stress, which makes it difficult to understand club activity stress holistically. In addition, in stress management education, demographic variables are difficult to change. Objective: The present study examined the effect of subjective

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... ogical commitment to club activity on coping selection. Methods: In this study, 5 0 2 adolescents who take part in club activities at school(1 4 6 junior high school students, 1 8 5 high school students, 1 7 1 university students; 2 2 4 females, 2 7 8 males; mean age 1 6. 9±2. 9) , completed a questionnaire about cognitive appraisal of stressors, strategies for coping with stress, and psychological commitment to club activity. Multiple group structural equation modeling was used to analyze the completed questionnaires. Results: Higher affective commitment predicted more use of catharsis and problem-solving strategies among university students. Furthermore, higher normative commitment predicted more use of catharsis strategies among junior high school students, diversion , catharsis , problem-solving , and affirmative interpreting strategies among high school students, and affirmative interpreting strategies among university students. Conclusion: In stress management education for club activity stress, promotion of normative commitment among high school students, and affective commitment among university students, would facilitate the flexible use of various coping strategies.