Cumulative childhood trauma and mobile phone addiction among chinese college students: role of self-esteem and self-concept clarity as serial mediators

Mobile phones have become an indispensable part of people's lives, and their use has been exacerbated by the COVID-19 pandemic. However, mobile phone addiction has also become a growing concern. This study investigates how cumulative childhood trauma relates to mobile phone addiction among Chinese college students, and the subsequent role of self-esteem and self-concept clarity. A sample of Chinese college students (N = 620) were investigated using the Childhood Trauma Questionnaire-Short Form, the Mobile Phone Addiction Tendency Scale, the Rosenberg Self-Esteem Scale, and the Self-Concept Clarity Scale. The results showed that: (1) cumulative childhood trauma significantly and positively predicted mobile phone addiction among college students; (2) self-esteem mediated the association between cumulative childhood trauma and mobile phone addiction; and (3) self-esteem and self-concept clarity had a sequential mediating effect on the relationship between cumulative childhood trauma and mobile phone addiction. Thus, this study is a reminder to focus on the combined role of multiple adverse experiences and self-system factors in the intervention of mobile phone addiction.