Evaluating the Longitudinal Measurement Properties of the Social Media Disorder Scale in Early Adolescents: Associations with Depressive Symptoms and Health-Related Behaviors
Problematic social media use (SMU) is an increasing concern for adolescents’ wellbeing worldwide. The nine-item Social Media Disorder Scale (SMD) is widely used to assess problematic social media engagement in youth, yet its longitudinal psychometric properties remain insufficiently examined. Establishing the scale’s r...