„An analysis of data from the United States and the United Kingdom suggests that the overall link between technology use and adolescent mental well-being is negative but small, explaining only 0.4 per cent of the differences in mental well-being. Many common activities that do not draw as much media attention – such as eating breakfast, cycling or getting enough sleep – have a larger association with adolescent mental well-being. Among negative factors, screen time had an association with adolescent well-being four times less strong than that of being bullied.“
UNICEF (Hrsg.), Worlds of Influence. Understanding What Shapes Child Well-being in Rich Countries (2020), S. 23.