... , of which 22 studies were Tier 1(Antrilli & Wang, 2018;Chen et al., 2013;Courage et al., 2021;Desoete & Praet, 2013;Di Lieto et al., 2017;Elimelech & Aram, 2020;Fernández-Molina et al., 2015;Haegele et al., 2011;Herodotou, 2018;Huber et al., 2018;Konok et al., 2021;Liu et al., 2021;Neumann, 2018;O'Toole & Kannass, 2018;Outhwaite et al., 2019;Parish-Morris et al., 2013;Ross et al., 2016;Schmitt et al., 2018;Schroeder & Kirkorian, 2016;Xu et al., 2021;Zhen, 2017), and seven studies were identified as Tier 2(Fikkers et al., Morris et al., 2013;Schmitt et al., 2018;Schroeder & Kirkorian, 2016) and eight quasi-experimental studies were included in the synthesis(Courage et al., 2021;Di Lieto et al., 2017;Herodotou, 2018;Konok et al., 2021;Liu et al., 2021;Ross et al., 2016;Xu et al., 2021;Zhen, 2017). Studies in Tier 2 included one cohort and five cross-sectional studies.All studies in both tiers were exclusively aimed at exploring the association between use of interactive digital devices and cognitive skills and were focused on general use of touchscreen devices(Courage et al., 2021;Konok et al., 2021;McNeill et al., 2021) and educational software system (Fernández-Molina et al., 2015; Haegele et al., 2011; Huber et al., 2018; Outhwaite et al., 2019; Rogowsky et al., 2018; Zhen, 2017), digital applications such as e-books (O'Toole & Kannass, 2018; Parish-Morris et al., 2013), multimedia (Chen et al., 2013), or videogames (Desoete & Praet, 2013; Elimelech & Aram, 2020; Fikkers et al., 2019; Herodotou, 2018; Russo-Johnson et al., 2017; Schmitt et al., 2018; Schroeder & Kirkorian, 2016). ...