“…Starting with Tajfel () there exists extensive empirical literature at the intersection between psychology, sociology, and behavioral economics which demonstrates that considerations about group identity play an important role in individual preferences. A persistent finding in this literature is manifestations of an “in‐group bias” according to which an individual of a given social group tends to favor—or to trust—individuals of her own group identity over individuals that belong to a different social group (see, e.g., Balliet & Van Lange, ; Chen & Li, ; Currarini & Mengel, ; Kuwabara et al, ; Morton, Ou, & Qin, ; Sherif, ; Tajfel & Turner, ). Experiments that establish the existence of an “in‐group bias” in strategic situations typically take the form of dictator games—where one individual can allocate money to another individual—or of trust games—where one individual can invest money into another individual with the prospect of receiving some money in return…”