“…The reduction in the possibilities for face-to-face interaction, lockdowns and social distancing (Nurunnabi et al, 2021;Viner et al, 2021), increased uncertainty about the future, financial implications (Cao et al, 2020;Russo and Terraneo, 2020), health and mental health risks (Son et al, 2020;Browning et al, 2021;Fruehwirth et al, 2021;Křeménková et al, 2021;Xu et al, 2021) as well as the inevitability of having to spend a great amount of time online which is also flooded with more negative content (Ratan et al, 2021;Serra et al, 2021) may play a role in the increased development of mobile phone addiction and the magnification of its negative consequences and mental health issues in general, especially in individuals who have less resources to cope with challenging situations and adversities. Surprisingly, although previous studies have both described the mediating role of rumination in the context of mobile phone addiction (Wang et al, 2018;Lian et al, 2021;Liu et al, 2021;Li et al, 2022;Peng et al, 2022) and have indicated cross-cultural differences in perceived stress (Lee et al, 2022;Mohamed et al, 2022), ruminative thinking (Murdock et al, 2019) and mobile phone addiction (Yang et al, 2019;Olson et al, 2022), there is no direct evidence available on the cultural conditioning of this mediating relationship. To explore the above-mentioned mechanism and in part fill the gap in understanding the role of cross-cultural differences, the aim of this study was to examine the mediating role of ruminative thinking on the relationship between mobile phone addiction and perceived stress in two different cultural settings and to compare them against each other.…”