“…Similarly to some aforementioned relations between SM and psychological well-being variables, problematic smartphone use (PSU) has been associated with psychopathology, such as depression and anxiety (Elhai et al, 2017; Hussain et al, 2017; Rozgonjuk, Levine, Hall, & Elhai, 2018), as well as transdiagnostic factors like rumination (Elhai et al, 2018), dysfunctional emotion regulation (Pancani et al, 2019; Rozgonjuk & Elhai, 2019), boredom proneness (Wolniewicz et al, 2019), and fear of missing out (Servidio, 2019). It should be noted, however, that most of these studies have used self-reports rather than objectively measured behavioral data.…”