Abstract
BACKGROUND: The increasing prevalence of smartphone addiction among youth has raised concerns. Previous research has indicated that poor parent-child relationship can lead to youth smartphone addiction. However, parent-child relationship harmony involves multiple parties and is difficult to intervene in due to family authority and other factors. Focusing on the pathways between parent-child relationships harmony and smartphone addiction is crucial for preventing smartphone addiction. This study was conducted to examine the role of parental monitoring as a mediator and the role of self-control as a moderator in the association between the parent-child relationship harmony and smartphone addiction among Chinese youth. METHODS: The nationwide survey included 9,270 youth in the Chinese mainland. The data collected included individual characteristics, smartphone addiction status, parent‒child relationship harmony, parental monitoring and self-control were collected. Sample weights were applied to ensure that the composition of our sample was consistent with the official statistics for each provincial-level administrative division on gender and school type. Structural equation modeling was used to analyze the mediating effect of parental monitoring and the moderating effect of self-control in the association between the parent-child relationship harmony and smartphone addiction. RESULTS: Among the 10,000 weighted participants, 5,166 (51.7%) were male, and 3,608 (36.0%) were aged 16 to 18 years. Parental monitoring mediated 48.14% (95% CI: 40.24 to 56.03) of the association between the parent‒child relationship harmony and smartphone addiction. The partial mediating effect of parental monitoring was differed across gender and age groups, and there was no significant heterogeneity. Moreover, self-control negatively moderated the indirect effects of parental monitoring on smartphone addiction (β = -0.12, 95% CI: -0.57 to -0.38), and the mediating effect of parental monitoring decreased as self-control increased. CONCLUSION: Our study explored the association between parent-child relationship harmony and youth smartphone addiction, which appeared to be partially mediated by efficient parental monitoring. Self-control played a moderating role in the indirect pathway of the mediating effect.