“…Rather than being just a psychological mechanism that upholds reciprocity, many researchers have proposed that gratitude plays a pivotal role in the development of social relationships (Algoe et al, 2013;Bartlett et al, 2012;Kubacka et al, 2011). Still, this proposition is primarily based on the observed effects of gratitude on reciprocity (Bartlett & DeSteno, 2006;Tsang, 2006b) and on the associations between the experience of gratitude and positive relational outcomes (closeness, conflict resolution, maintenance, goal contagion, mimicry) in social relationship (Algoe et al, 2013;Gordon et al, 2012;Grant & Gino, 2010;Jia, Lee, & Tong, 2015;Jia, Tong, & Lee, 2014;Kubacka et al, 2011;Lambert et al, 2010). Nevertheless, an actual demonstration of the relationship promoting effects of gratitude would require monitoring exchange processes over a long period, to investigate the ongoing dynamics between the reception of favours, the experience of gratitude, and the development of relational ties.…”