Rules serve many important functions in society. One such function is to codify, and make
public and enforceable, a society's desired prescriptions and proscriptions. This codification …

Like other group-living species, humans often cooperate more with an in-group member
than with out-group members and strangers. Greater in-group favoritism should imply that …

Humans operate in groups that are oftentimes nested in multilayered collectives such as
work units within departments and companies, neighborhoods within cities, and regions …

Ingroup favoritism and intergroup discrimination can be mutually reinforcing during social
interaction, threatening intergroup cooperation and the sustainability of societies. In two …

Translational criminology emerged from the evidence-based criminology movement, which
relies on rigorous research to amass scientific evidence about how to improve fairness and …

Ingroup favoritism and intergroup conflict can be mutually reinforcing during social
interaction, threatening the peace and sustainability of societies. In two studies (N= 880), we …

Although traditional gender roles are being challenged in many Western societies, few
studies have examined how gender identity centrality has changed over time across …