“…If, in this way, social media changes the surface form of activities more than the functions they fulfill, we would not expect consistent negative or positive effects on well-being. This account is supported by a number of studies and reviews that find null effects or only small effect sizes (M. Appel et al, 2019;Coyne et al, 2020;e.g., meta-analytic r = -.07, Huang, 2017;Jensen et al, 2019; of social media use on well-being, as well as by multiple studies that examine the direction of this association. Although it has often been argued that social media make people lonelier, more depressed, and less satisfied with their life (e.g., Kross et al, 2013;Twenge et al, 2018;Twenge & Campbell, 2019), it could also be that lonely, depressed, and unhappy people (or people who are simply more introverted) are more likely to self-select into using social media as a means of forming new relationships, finding communities that provide social support, and coping with negative affect (e.g., Fergie et al, 2016;Gowen et al, 2012;K.…”