“…Emotions play a pivotal role in motivating and maintaining children's prosociality (Eisenberg et al, 2016;Malti & Dys, 2018). For instance, sympathy for those who have been harmed increases children's comforting (Eisenberg & Miller, 1987;Malti et al, 2009;Vaish et al, 2009;Zahn-Waxler et al, 1992) and children show positive emotions when helping and giving to others (Aknin et al, 2012(Aknin et al, , 2015(Aknin et al, , 2018Hepach et al, 2017;Lennon & Eisenberg, 1987;Song et al, 2020;Wu et al, 2017). These positive emotions appear to provide a proximate incentive for children to forego their immediate self-interest, and instead invest in their cooperative partners (Aknin et al, 2012), as well as maintain their relationships with peers, e.g., by signaling interest in cooperative interactions (Marcus, 1986).…”