“…For instance, high mobility (vs. low mobility) would promote larger friendship networks (Lun, Roth, Oishi, & Kesebir, 2012), fewer cautions about friendship and less concern about existences of enemies (Li, Adams, Kurtis, & Hamamura, 2015). Mobility also extensively shapes people's strategies used in different types of social relationships (e.g., Li, Hamamura, & Adams, 2016;Lou & Li, 2017;Sato, Yuki, & Norasakkunkit, 2014). For instance, self-disclosure in friendship (Schug, Yuki, & Maddux, 2010) and intimacy seeking in both friendship and romantic relationships (Yamada, Kito, & Yuki, 2015) are more likely to be adopted as a commitment device to strengthen relationships in high-relational-mobility societies.…”