Perceivers tend to be reluctant to admit new members into their ingroups—unless there is some potential for prospective group members to provide value to the group. In the present research, we examine the effect of facial trustworthiness on ingroup inclusion decisions. Five studies demonstrate that facial trustworthiness exerts a powerful bottom-up perceptual cue that conveys this necessary “positive information,” resulting in an increased likelihood of ingroup acceptance. This effect was first found for a homogenous sample of White male faces (Study 1), but was also found independent of sex (Study 2), and independent of race (Studies 3a, 3b, & 4), whereby facial trustworthiness influenced inclusion decisions more than salient aspects of group membership (i.e., sex and race).

感知者往往不愿接纳新成员加入他们的小组，除非潜在的小组成员有一定的潜力为小组提供价值。在本研究中，我们研究了面部信任度对群体内包容性决策的影响。五项研究表明，面部可信赖性发挥了强大的自下而上的感知暗示，传达了必要的“积极信息”，从而增加了团体接受的可能性。首先从同种白人男性面孔样本中发现了这种效应（研究1），但也发现该效应与性别无关（研究2），与种族无关（研究3a，3b和4），因此面部信任度会影响纳入决策。不仅仅是团体成员的重要方面（即性别和种族）。