“…A recent meta-analysis found a modest correlation ( r = .38, 95% confidence interval = [.33, .42]) between self-reported and device-logged digital-technology use, which indicates “that self-report measures of media use may not be a valid stand-in for more objective measures” (Parry et al, 2021, p. 7). Furthermore, several studies have found that the error involved with self-reported digital-technology use is systematically related to crucial participant characteristics, such as gender or age (Ernala et al, 2020; vanden Abeele et al, 2013), volume of digital-technology use (Boase & Ling, 2013; Deng et al, 2019; Ernala et al, 2020; Sewall et al, 2020), and level of mental well-being (Burnell et al, 2021; Sewall et al, 2020; Sewall & Parry, 2021). Thus, given the focus on explicating the association between digital-technology use and psychological distress, it is likely that the self-reported digital-technology use data in the extant longitudinal analyses described above—and the subsequent findings and conclusions—are systematically biased by participant characteristics that are fundamental to the phenomenon under investigation.…”