SPECIALUSIS UGDYMAS / SPECIAL EDUCATION 2022 1 (43) 4866 The effect of depression and fandom activity on life satisfaction in adolescents: Moderated mediation effect of grit Eun Sun Kang 1 , Chang Seek Lee 2 1 Dept. of Child-Adolescent Counselling Psychology, Hanseo University, South Korea 2 Dept. of Health, Counselling and Welfare, Hanseo University, South Korea Abstract Background: Korean adolescents have relatively high levels of depression and low life satisfaction compared to other countries. Academic interest is needed to devise measures to alleviate the effects of depression on life satisfaction in adolescents. Objectives: The study aimed to suggest a way to alleviate the negative effects of depression on life satisfaction by verifying whether grit moderates the influence of depression on life satisfaction through fandom activities in adolescents. Methods: The research subjects were selected from the 3rd grade of middle school among the subjects of the 3rd year (2020), the most recent data of the 『Korea Children and Youth Panel 2018 (KCYPS 2018)』. The data were analyzed using SPSS PC+ Win. 25.0 and SPSS PROCESS macro 4.1. Applied statistical techniques were descriptive statistics, reliability analysis, correlation analysis, and moderated mediating effect analysis. Results: As a result of the study, first, depression in adolescents showed a significant positive correlation with fandom activity and a significant negative correlation with grit and life satisfaction. Fandom activity showed a significant negative correlation with grit and life satisfaction. And grit showed a significant positive correlation with life satisfaction. Second, grit moderated the effects of depression on life satisfaction through fandom activities. Grit served as a buffer to mitigate the negative effects of depression on life satisfaction through fandom activities. Conclusions: This study confirmed that grit will alleviate the negative effect of depression and fandom activities on adolescents' life satisfaction. Keywords: depression, life satisfaction, fandom activity, grit, moderated mediating effect, adolescent 1. Introduction According to the statistics of the Korean adolescent health behavior online survey, 19.7% of male adolescents and 27.8% of female adolescents experienced depression, indicating that not a few adolescents experienced depression [1]. Depression experienced during adolescence is more worrisome that it negatively affects the development of adolescents [2], anti-social behaviors such as delinquency [3], and irreversible consequences such as suicidal thoughts and suicide attempts [4]. In addition, depression in adolescence directly affects social competence and interpersonal relationship formation ability, resulting in maladaptation to schoolwork and friendship, and negatively affects physical and mental growth [5]. In addition, it is known that the risk of depression in adolescence