Abstract
Whereas research has documented how atheists are perceived, none has considered their perceptibility. Atheists must first be identified as atheists in order to experience the stigma associated with them (i.e., as distrusted, disliked, and widely maligned). Although atheism is considered a concealable aspect of one’s identity, substantial research has found that a variety of ostensibly concealable attributes about a person are indeed legible from small and subtle cues. We merged these lines of inquiry here by considering the perceptibility of religious and spiritual (dis)belief. Studies 1A-1B showed that atheists could be reliably discerned from Christians based on brief glimpses of 100 standardized male faces. Experiment 2 replicated these results using female faces. Experiments 3 A-E then interrogated the facial features that support perceivers’ detection of atheism, showing that various parts of faces suffice for independently conveying atheism. Experiment 4 investigated and showed a potential mechanism for atheism detection – expressive suppression. Thus, across nine studies (N = 677), these data show robust evidence that atheists can be categorized from facial cues.