Previous research indicates that Euro-American women are more upset by imagining their male partners committing homosexual infidelities than heterosexual ones. The present studies sought to replicate these findings and extend them to two non-Western cultures wherein masculine men frequently engage in sexual interactions with feminine third-gender males. Across six studies in three cultural locales (Canada, Samoa, and the Istmo Zapotec), women were asked to rate their degree of upset when imagining that their partner committed infidelity that was heterosexual in nature, as well as infidelity that was homosexual. In two Canadian undergraduate samples, women reported greater upset at imagining partner infidelity with a female, whereas a community sample of middle-aged women reported equal upset across infidelity types. Samoan women reported substantially less upset at the thought of partner infidelity with a third-gender male (fa’afafine) than with a female. Istmo Zapotec women reported equal upset toward infidelity with a female or a third-gender male (muxe), whereas a second Zapotec sample reported slightly greater upset at the thought of infidelity with a muxe. Results illustrate how cultural contexts moderate the degree to which same-sex infidelity scenarios are upsetting to women.

先前的研究表明，与异性恋相比，欧美女性更容易想象自己的男性伴侣犯下同性恋不忠行为。目前的研究试图复制这些发现，并将其扩展到两种非西方文化，其中男性男性经常与女性第三性别男性进行性互动。在三个文化地区（加拿大、萨摩亚和 Istmo Zapotec）的六项研究中，女性被要求对想象自己的伴侣犯下异性恋不忠以及同性恋不忠时的不安程度进行评分。在加拿大的两个本科生样本中，女性在想象伴侣对女性不忠时表现出更大的不安，而中年女性的社区样本报告称，不同类型的不忠行为同样令人不安。fa'afafine）而不是女性。Istmo Zapotec 女性报告称，对与女性或第三性别男性 ( muxe ) 的不忠同样感到不安，而第二个 Zapotec 样本报告称，对与 muxe 不忠的想法略有不同。结果说明了文化背景如何调节同性不忠情景对女性的困扰程度。