Extreme Internet users scored less in all PISA subjects …

„In OECD countries participating in PISA, extreme Internet users – students who use the Internet more than six hours a day – displayed lower life satisfaction, higher risk of disengagement from school and higher levels of perceived loneliness at school. Extreme Internet users also scored less in all PISA subjects, even after taking into account differences in socio-economic background.“
OECD (Hrsg.), „OECD Skills Outlook 2019“ (2019), S. 158