| Sumario: | Problematic Internet use is recognized as a significant public health concern among adolescents. Previous research has shown that adolescents with problematic Internet use tend to experience higher levels of anxiety and depression compared to non-problematic Internet users. Nevertheless, when it comes to differences in specific symptoms, the evidence is less clear-cut. This study conducted Gaussian graphical model and Bayesian network analysis to compare the network structures of anxiety symptoms and depression symptoms among adolescents with problematic and non-problematic Internet use. A total of 1,139 Chinese adolescents (540 problematic Internet users, M = 15.96; 599 non-problematic Internet users, M = 16.03) were included in the study. The results showed that compared to adolescents with non-problematic Internet use, most anxiety symptoms (e.g., inability to stop or control worries) emerged as upstream nodes with significant downstream effects on a series of emotional symptoms of anxiety and depression among adolescents with problematic Internet use. "Fear of something terrible happening," "irritability," "feeling fearful" and "feeling effortful" were symptomatic targets for intervening problematic Internet use and improving mental health. These findings offer novel data-driven insights on the core symptoms and directional relationships of anxiety-depression comorbidity network among Chinese adolescents with different Internet use states.
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