The Bidirectional Relationship Between Social Media Use and Adolescent Anxiety: Mechanisms and Future Directions

Abstract

This study focuses on the bidirectional relationship and underlying mechanisms between social media use and adolescent anxiety. Existing research largely focuses on the one-way influence, lacking integration of bidirectional pathways, core mediating mechanisms, and adolescent developmental vulnerability, and failing to explain the algorithm-driven social comparison effect. This paper integrates four psychological perspectives to confirm that the two are mutually causal, forming a self-reinforcing feedback loop; it clarifies that upward social comparison is a high-frequency, cross-cultural core mediating mechanism, and reveals that adolescents are in a sensitive period of social development, with an imbalance between the brain's reward and control systems and high sensitivity to peer evaluation, making them more susceptible to the influence of the digital environment. This research deepens the understanding of the mechanisms of adolescent mental health in the digital age, providing evidence-based directions for family parenting, school mental health education, clinical intervention, and platform optimization, helping to break the vicious cycle and promote healthy adolescent development.