Study: EU Kids Online

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Digital technologies, including smartphones, social media, and online games, have become integral to adolescents' daily lives. But how do they truly impact their well-being? For years, studies have raised concerns about potential harms, yet most relied on methods that could not establish cause and effect. Over six years, the Interdisciplinary Research Team on Internet and Society (IRTIS) conducted 15 rigorous studies in the Czech Republic using advanced methods (longitudinal studies, experiments, and real-time assessments) to uncover how digital technologies impact adolescents’ psychological, social, and physical well-being.

The study can be downloaded below.


Smahel, D., Šaradín Lebedíková, M., Lacko, D., Kvardová, N., Mýlek, V., Tkaczyk, M., Svestkova, A., Gulec, H., Hrdina, M., Machackova, H., & Dedkova, L. (2025), EU Kids Online