Mixed-gender threesomes (MGTs) are a type of consensually nonmonogamous sexual encounter involving three people of more than one gender. Little research has been conducted on MGTs, and what little work does exist is limited to college students, who may actually be less experienced with MGTs than older adults. The present study investigated attitudes toward, interest in, experiences with, and outcomes of MGTs in two samples (college N = 231; online N = 1342), comprised of 907 heterosexual and 666 sexual minority participants in total. Results indicated that participants reported neutral-to-positive attitudes toward and moderate-to-high levels of interest in MGTs (81% indicated some degree of interest). MGTs involving familiar others were preferred to those involving strangers. Men, sexual minority individuals, and participants from the online sample reported more favorable attitudes toward and greater interest in MGTs as compared to women, heterosexual individuals, and participants from the student sample. In addition, 30% of participants indicated having experience with a MGT. Sexual minority individuals reported more experience with MGTs and more positive outcomes than did heterosexual individuals. In addition, on average, participants reported that their MGT experiences “met expectations.” Overall, these results indicate that MGTs are a common sexual behavior that often results in positive outcomes, especially among sexual minority individuals. Additional research on this understudied topic is needed, particularly as it relates to outcomes and the role of MGTs in consensually nonmonogamous relationships.

混合性别三人行 (MGT) 是一种双方同意的非一夫一妻制的性接触，涉及三个以上性别的人。关于 MGT 的研究很少，而且确实存在的工作仅限于大学生，他们实际上可能比老年人更缺乏 MGT 的经验。本研究调查了两个样本中 MGT 的态度、兴趣、经验和结果（大学N  = 231；在线N = 1342)，共包括 907 名异性恋和 666 名性少数参与者。结果表明，参与者报告了对 MGT 的中立到积极态度和中到高水平的兴趣（81% 表示有一定程度的兴趣）。涉及熟悉他人的 MGT 优于涉及陌生人的 MGT。与女性、异性恋者和来自学生样本的参与者相比，来自在线样本的男性、性少数群体和参与者对 MGT 表现出更积极的态度和更大的兴趣。此外，30% 的参与者表示有 MGT 的经验。与异性恋者相比，性少数个体报告了更多的 MGT 经验和更积极的结果。此外，平均而言，参与者报告说他们的 MGT 体验“达到了预期”。” 总的来说，这些结果表明 MGT 是一种常见的性行为，通常会带来积极的结果，尤其是在性少数群体中。需要对这个未充分研究的主题进行额外的研究，特别是因为它与结果和 MGT 在双方同意的非一夫一妻制关系中的作用有关。