This paper describes the outcome of an artefactual field experiment of group discrimination using sports fans. The behavior of individuals whose identity is deeply tied to a larger group or popular institution is politically important, particularly when it comes to crafting public policy. Sports fans provide a unique opportunity to study individuals who openly identify their in-group and rival groups. The study identifies within-subject group-based discrimination by quantifying the difference in dictator game takes (out of a possible $10) between fans of an individual’s self-professed team and fans of an individual’s self-professed rival. Fifty-two sports fans each participated in nine separate power-to-take dictator games with group identification spanning three levels (NCAA Division III, NCAA Division I, and professional) of football fandom. The results suggest that individuals discriminate between in-group and out-group members. The average takings ratio with same-team fans is 0.657 while the average takings ratio with other-team fans is 0.848 and the difference of 0.190 is statistically different from zero. We discuss the results in the context of team and league governance focusing on fan interactions.

本文描述了使用体育迷进行群体歧视的人工现场实验的结果。身份与更大的群体或流行机构密切相关的个人的行为在政治上很重要，尤其是在制定公共政策时。体育迷提供了一个独特的机会来研究那些公开识别他们的团体和竞争对手的个人。该研究通过量化个人自称团队的粉丝和个人自称竞争对手的粉丝之间的独裁者游戏差异（可能的 10 美元）来识别基于受试者群体的歧视。52 名体育迷每人参加了 9 场独立的权力独裁者游戏，其群体识别跨越三个级别（NCAA Division III、NCAA Division I 和专业）的足球迷。结果表明，个体区分组内成员和组外成员。与同队球迷的平均收入比为0.657，而与其他球队球迷的平均收入比为0.848，0.190的差异在统计上与零不同。我们在关注球迷互动的球队和联赛治理的背景下讨论了结果。