“…Accompanying these considerations are fears of personalised echo chambers (Sunstein, 2001) or filter bubbles (Pariser, 2011), leading to fragmented, biased perceptions of society (Dylko, 2016). However, recent empirical studies fail to show a coherent picture: there are clear patterns of algorithmically induced, homogenous opinion networks (Bakshy, Messing, & Adamic, 2015;Del Vicario et al, 2016;Dylko et al, 2017), but other studies indicate more opinion diversity despite algorithmic selection and qualify the risk of echo chambers with empirical evidence (Barbera, Jost, Nagler, Tucker, & Bonneau, 2015;Dubois & Blank, 2018;Fletcher & Nielsen, 2017;Heatherly, Lu, & Lee, 2017;Helberger, Bodo, Zuiderveen Borgesius, Irion, & Bastian, 2017;Zuiderveen Borgesius et al, 2016).…”