The Impact of Social Exclusion on Mobile Phone Addiction among University Students: The Chain Mediating Role of Just world Beliefs and Subjective Well-being

Purpose: To investigate the mediating roles of just world beliefs and subjective well-being between social exclusion and mobile phone addiction. Methods: The Social Exclusion Questionnaire for College Students, the Just World Belief Scale for College Students, the Happiness Index Scale, and the Smartphone Addiction Scale for College Students were used to measure 547 college students in Guangdong Province. Results: (1)Social exclusion and mobile phone addiction were significantly positively correlated. (2)Justice world beliefs partially mediated the effect of social exclusion on college students' mobile phone addiction. (3)Subjective well-being partially mediated the effect of social exclusion on mobile phone addiction among college students. (4)Just world beliefs and subjective well-being play a chain mediating role in the influence of social exclusion on college students' mobile phone addiction. Conclusion: Social exclusion can directly affect college students' mobile phone addiction behaviour, and can also indirectly affect college students' mobile phone addiction behaviour through just world beliefs and subjective happiness.