Abstract
<jats:p>This book offers a methodologically rigorous synthesis of large-scale national survey evidence on the relationship between adolescent screen time and psychological well-being. Moving beyond the moral panic that has dominated public discourse, it systematically examines the measurement paradigms underlying screen time research — exposing how recall bias, social desirability distortion, and the consistent overestimation inherent in self-reported data have compromised existing evidence. The volume deconstructs the prevailing dose-response framework, demonstrating that linear models of screen-time harm fail to capture the non-linear, context-dependent realities of adolescent digital engagement. Through critical evaluation of displacement hypotheses, reverse causality, and confounding variables, the analysis reveals that forward causation from screen time to psychological distress is consistently weak once disentangled from stable individual differences and shared external stressors. Addressing sociological dimensions of digital stratification, the book proposes a nuanced typology differentiating screen use by content, context, and connection, concluding with evidence-based policy recommendations that prioritize developmental precision over blanket reduction mandates.</jats:p>