Digital Technology Use and Adolescent Mental Health Before and During the COVID-19 Pandemic: The Roles of Internet Addiction and Digital Competence.

This study examined whether Internet addiction (IA) and digital competence (DC) mediated the association between digital technology use and mental health problems in adolescents before and during the COVID-19 pandemic, when digital device use increased dramatically. Repeated cross-sectional data from a 3-year cross-cohort study adopting stratified random sampling were analyzed. In 2019, 569 adolescents (female = 312) from 14 secondary schools completed a DC assessment and an online survey on their digital technology use, IA, and mental health.

Understanding protective and risk factors affecting adolescents' well-being during the COVID-19 pandemic.

This study investigated the factors affecting adolescents' well-being during the COVID-19 pandemic from the perspectives of their participation in digital activities, emotional regulation, self-regulated learning, and parental involvement. Using self-reported data from 932 pairs of adolescents and their parents, we performed multiple-group structural equation modeling, which revealed that self-efficacy in online learning during school suspension was a key factor influencing adolescents' perceived worries after schools resumed. During school suspension, boys' cognitive-emotional regulation played a protective role in their well-being, helping them to avoid cyberbullying incidents, while girls' participation in leisure-oriented digital activities compromised their self-efficacy in online learning and led to cyberbullying incidents.