Public health emergencies remain one of the biggest threats to the well-being of human race. The coronavirus disease-19 (COVID-19) pandemic has been lasted for a long time and significant changes to our daily lives have occurred, such as social distancing, working from home, temporary unemployment, financial strain, and home-schooling of children. Serious effect of the COVID-19 pandemic on mental health and emotional well-being has been highlighted (1). The common psychological symptoms due to the pandemic included depression, anxiety, insomnia, fear, stress, irritability, and even post-traumatic stress disorder (2).
Children are particularly vulnerable during the pandemic because they have limited coping strategies and limited understanding of the pandemic. Serious concerns about the mental health of children and adolescents during the pandemic have been raised (3). At an earlier stage of pandemic, most educational institutions have temporarily suspended their traditional in-person classroom courses and have to adopt online education where teaching is provided remotely on digital platforms. As a consequence, school students faced with a variety of challenges, such as prolonged home stay, difficulties in schoolwork, increased loneliness, increased academic pressure, increased conflict with parents, reduced physical activity, and reduced social interaction with peers, which can create dramatic psychological effects and increase risk for mental health problems (4). For instance, our previous study found that more than one fifth of junior and high school students in China reported symptoms of depression, anxiety, and stress at the initial stage of COVID-19 (5). Although China seems to have kept COVID-19 largely under control, we believe that the psychological consequence on the children and teenagers are long-term. We have only identified one study to compare mental health status of adolescents between different stages of COVID-19 outbreak (February 2020 versus April 2020), and the results found the prevalence of depression and anxiety increased from 36.6% and 19–57% and 36.7%, respectively (6). However, comparisons of psychological health on children and teenagers have not been made between an early and a late stage of COVID-19 pandemic. The first objective of present study aims to investigate the effect of COVID-19 pandemic on mental health of children and teenagers in the post-COVID era and compare the results with our previous study.
The spread of online learning may lead to an increased risk of developing pathological use of the internet or internet addiction. Internet addiction is considered an impulse-control disorder characterized by an extensive use of the internet that cause neurological impairments, psychological distress, and significant functional impairments in daily life (7). Functional impairments caused by internet addiction included sleep disturbances, impaired academic performance, interpersonal problems, and time management problems (8). Furthermore, there was an association between internet addiction and negative emotions such as depression and anxiety (9). On one hand, internet addiction predicted impaired mental health (10). On the other hand, individuals who have emotional problems tend to spend more time online, mainly because of the anonymous nature of the internet. In the last two decades, we have to admit that the number of adolescent internet users had been increasing dramatically in the world and internet addiction has become a worldwide health issue (11). For instance, a cross-sectional survey on 14,296 high school students in China showed that 12.2% of the 12,446 internet users were addicts (12). Another nationally representative sample study in China showed that the prevalence of internet addiction in the total sample was 6.3% and among internet users was 11.7% (13). A recent meta-analysis included 48,090 students in the analysis and identified 6548 (13.62%) as excessive internet users (14). A number of epidemiology studies suggested that a younger age and male were associated with a higher risk of internet addiction (15). Since the outbreak of COVID-19, children and adolescents spent most of their time interacting with internet. As a maladaptive coping strategy, internet addiction is becoming more prevalent among adolescents in China as well as other countries during the COVID-19 pandemic (16).
Burnout occurs when coping is limited in stressful situations. The COVID-19 pandemic may also lead to a passive mental state of students to the learning, that is, learning burnout. Students with learning burnout often demonstrate decreased enthusiasm for learning and negative attitudes toward learning. Learning burnout in students were associated with a variety of negative outcomes, such as poor academic performance (17), mental disorders, increased loneliness (18), increased tendency to drop out from school (19), and even suicide (20). Two longitudinal studies in adolescents revealed reciprocal cross-lagged paths between excessive internet use and school burnout (21). More recently, a study revealed that COVID-19 anxiety significantly and uniquely linked to learning related cynicism, which was a cognitive aspect of learning burnout.
There are a lot of commonalities between learning burnout and internet addiction, such as both are prevalent among children and adolescents, both are related to chronic stress, both are associated with social withdrawal, isolation, and loneliness, and both have negative effect on emotional wellbeing. However, few studies investigated the relation between learning burnout and internet addiction in adolescents. As fear may be a central construct in explaining the negative consequence due to the COVID-19 pandemic, the present study is dedicated to understand the underlying mechanisms between COVID-19 fear and psychological health in Chinese adolescents during the post-COVID era with two gendered models. In particular, we assume that the two mediators of internet addiction and learning burnout may co-play a serial mediating role in the relationship of COVID-19 fear and psychological health. We hereby proposed the following three hypotheses for this study:
H1: Internet addiction plays a mediating role between COVID-19 fear and psychological health;
H2: Learning burnout also plays a mediating role between COVID-19 fear and psychological health;
H3: Internet addiction and learning burnout co-play a serial mediating role in the relationship of COVID-19 fear and psychological health.