“…Indeed, PSU can involve deficits in social relationships, work and/or school performance, and can even lead to family disputes caused by excessive smartphone use because of too many hours spent on social media interaction (Billieux, Maurage, Lopez-Fernandez, Kuss, & Griffiths, 2015). Additionally, results from several previous studies found an association between PSU and poor mental health condition including depression and anxiety (Coyne, Stockdale, & Summers, 2019;Kara, Baytemir, & Inceman-Kara, 2019), sleep deficits (Zhang & Wu, 2020), low self-esteem (Lannoy et al, 2020), low selfcontrol (Servidio, 2019), and lower motivation in doing physical activities (Pereira, Bevilacqua, Coimbra, & Andrade, 2020). We should underline, however, that PSU is not actually included in the official diagnosis of the International Classification of Diseases or the Diagnostic and Statistical Manual of Mental Disorders (DSM-5) and does not seem to pose the same risks that drug and alcohol use disorders do.…”