The purpose of this study was to test the non-recursive relationship between adolescents’ life satisfaction, school life activities and friendship. The autoregressive cross-lagged model was applied, using the dataset taken from the 1st to 6th year of the 4th-panel data of the KCYPS. Multiple group analysis was conducted in order to determine whether there were gender differences in the relationships among these three variables. The results demonstrate that the constructs of life satisfaction, learning activity, and peer relationship satisfied the measurement invariance with time from the 4th to the 9th grades. Next, the relationship between life satisfaction and peer relationship was found to have a reciprocal effect. Additionally, the relationship between learning activity and peer relationship also showed a reciprocal effect. Specifically, the life satisfaction experienced previously had a significant effect on the friendships created later and vice versa. The learning activities experienced in the past also had a significant effect on the later friendships and vice versa. Third, previous learning activities had a significant influence on later life satisfaction in one direction only, not in reciprocal way. Finally, according to our multi-group analysis, no gender differences were found in the relationship among the three constructs during the period under consideration.


life satisfaction, learning activities, friendship, autoregressive cross-lagged model, multigroup analysis