The heightened belief that others intend to harm you (paranoia) is often accompanied by social withdrawal, avoidance and isolation. We investigated whether paranoia is related to betrayal aversion: the tendency to avoid potential harm caused by other people over and above an equivalent harm caused by a non-social mechanism. Across three large-N (N_total = 2433) pre-registered online studies, we employed a game theoretic paradigm where participants engaged in interactions with real players. Studies 1 and 2 explored betrayal aversion by eliciting participants' willingness to enter interactions where monetary reward was either determined by another player or a lottery. Study 3 examined betrayal aversion in a context where choices were not financially-incentivised. Paranoia was not associated with betrayal aversion or risk aversion in any study. We consider two possibilities: that paranoia does not involve increased risk aversion or betrayal aversion, or that the paradigm was limited in terms of its ability to trigger betrayal and risk aversion behaviour in paranoia.

对他人有意伤害你的强烈信念（偏执狂）通常伴随着社交退缩、回避和孤立。我们调查了偏执是否与背叛厌恶有关：避免其他人造成的潜在伤害的倾向，而不是由非社会机制造成的同等伤害。跨越三个大 N（N_总 = 2433) 预先注册的在线研究，我们采用了一种博弈论范式，参与者与真实玩家进行互动。研究 1 和研究 2 通过引发参与者愿意参与互动的意愿来探索背叛厌恶，在这种互动中，金钱奖励要么由另一个玩家决定，要么由彩票决定。研究 3 检验了在选择不受经济激励的情况下的背叛厌恶。在任何研究中，偏执狂与背叛厌恶或风险厌恶无关。我们考虑两种可能性：偏执不涉及增加的风险厌恶或背叛厌恶，或者范式在偏执中触发背叛和风险厌恶行为的能力有限。