Emerging adults are especially vulnerable to experiencing alcohol-related sexual assault. While bystanders play a critical role in preventing sexual assault, little is known about how bystander alcohol intoxication affects the intervention process—particularly in naturalistic settings. We recruited 315 emerging adult bargoers ages 21–29 (46% women; 28% non-college attending; 81% White) from a high-density bar area to provide responses to a sexual assault vignette and complete a breath alcohol concentration test. In this field-based study, we found a negative direct association between intoxication and appraisal of risk in the hypothetical sexual assault situation. We also found a negative indirect relation of intoxication on perceptions of personal responsibility to intervene and confidence in the ability to intervene, statistically mediated through reduced risk appraisal. Findings add to the limited literature in laboratory-based settings suggesting that bystander intoxication interferes with sexual assault intervention and help inform effective bystander intervention programming for emerging adults.

新兴成年人特别容易遭受与酒精有关的性侵犯。虽然旁观者在防止性侵犯方面发挥着关键作用，但人们对旁观者酒精中毒如何影响干预过程知之甚少——尤其是在自然环境中。我们从高密度酒吧区域招募了 315 名年龄在 21-29 岁之间的新兴成年酒吧招待（46% 为女性；28% 为非大学生；81% 为白人），以提供对性侵犯小插曲的回应并完成呼气酒精浓度测试。在这项基于实地的研究中，我们发现在假设的性侵犯情况下，醉酒与风险评估之间存在负直接关联。我们还发现醉酒对个人干预责任的看法和对干预能力的信心存在负间接关系，通过减少风险评估进行统计调解。研究结果补充了基于实验室环境的有限文献，表明旁观者中毒会干扰性侵犯干预，并有助于为新兴成年人提供有效的旁观者干预计划。