“…More specifically, if the heterogeneity of the person-specific associations between SMU and distraction is stable, the heterogeneity may be explained by factors that are also relatively stable over time. In this case, trait-like characteristics, such as gender (Throuvala et al, 2021), trait levels of fear of missing out (Franchina, Vanden Abeele, van Rooij, Lo Coco, & De Marez, 2018), parental control (Fardouly, Magson, Johnco, Oar, & Rapee, 2018), or proactive self-control strategies (Brevers & Turel, 2019) are likely to moderate the effects of social media use on distraction. Conversely, if the heterogeneity appears to be unstable across time, it is more likely that the heterogeneity in person-specific associations is explained by situational factors, such as mindfulness (Chin et al, 2020), exhaustion (Reinecke & Hofmann, 2016), sleep quality (Baumeister, Wright, & Carreon, 2019;Roca et al, 2012), or other factors that may fluctuate across different weeks, months, or years.…”