Migration and ethnic diversity are said to hamper the cultivation of social trust, as native citizens may hesitate to trust ethnic out-groups and racial minorities. This article examines trust discrimination against ethno-racial minorities in everyday interactions. In a field intervention, cyclists were approached with a request for help that required them to leave their bicycles alone for a short time. I experimentally manipulated the presence and the ethnic background of a bystander positioned close to the spot where the cyclists left their bikes behind and operationalized trust as the decision to leave the bike unlocked and unattended. I found that cyclists showed significantly less trust in the presence of ethno-racial minorities compared to natives. Furthermore, trust in the wild depends on the stakes involved, as measured by the value of the bike, and one’s vulnerability to trust betrayal, as indicated by the physical stature of the cyclists. By examining a real-life indicator of trust in inter-ethnic encounters, this study advances our knowledge of the ethnic boundaries of social trust and forms of covert discrimination in anonymous and multi-ethnic societies.

中文翻译：

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不锁自行车：种族间遭遇中的信任歧视

据说，移民和种族多样性阻碍了社会信任的培养，因为当地公民可能会犹豫是否信任外族群体和少数族裔。本文探讨了日常互动中针对少数族裔的信任歧视。在一次现场干预中，骑自行车的人收到了帮助请求，要求他们暂时不要骑自行车。我实验性地操纵了靠近骑自行车者留下自行车的地点的旁观者的存在和种族背景，并将信任作为让自行车解锁和无人看管的决定。我发现与当地人相比，骑自行车的人对少数族裔的存在表现出明显较低的信任。此外，对野外的信任取决于所涉及的风险，通过自行车的价值来衡量，以及一个人对信任背叛的脆弱性（通过骑自行车者的身材来衡量）。通过研究现实生活中种族间接触中的信任指标，这项研究增进了我们对社会信任的种族界限以及匿名和多种族社会中隐蔽歧视形式的了解。