Abstract：
The present study sought to investigate sex and sexual orientation differences in several traits related to sexuality and sexual behavior. Examining sexual orientation differences alongside basic sex differences to help identify correlates of sexual orientation diversity, and whether individuals with varying degrees of same-sex attraction show concurrent sex-atypical shifts in other domains. Males tend to score higher than females in the Dark Triad (DT) traits of sub-clinical narcissism, psychopathy, and Machiavellianism. Similarly, females tend to be more cautious than males in their attitudes and desires toward casual sex activity (i.e., sociosexuality). These sex differences may be related to the propensity for individuals to become easily sexually excited, which is higher in males, or to instead inhibit sexual arousal, which is higher in females. In a large undergraduate sample (N = 2047), we replicated expected sex differences in DT traits, sociosexuality, and sexual excitation/inhibition. We found that non-heterosexual females were \"male-shifted\" in some of these traits, but these shifts tended to be strongest among mostly heterosexual and bisexual individuals. Furthermore, we found that within-sex variation in sociosexuality, sexual excitation, and sexual inhibition was not related to sexual orientation in a linear fashion. Instead, sociosexuality and sexual excitation were related to sexual orientation in a curvilinear (inverted-U) fashion, especially among females. The fact that traits correlated with bisexuality and homosexuality were somewhat distinct is consistent with the idea that different developmental pathways may lead to these discrete sexual attraction patterns.
摘要：
本研究旨在调查与性和性行为相关的几种特征的性别和性取向差异。检查性取向差异以及基本的性别差异，以帮助确定性取向多样性的相关性，以及具有不同程度的同性吸引力的个体是否在其他领域表现出并发的非典型性转变。在亚临床自恋的黑暗三合会（DT）特征中，男性的得分往往高于女性，精神病,和马基雅维利主义。同样，女性对随意性活动的态度和欲望往往比男性更谨慎(即，社会性)。这些性别差异可能与个体容易性兴奋的倾向有关，在男性中更高，或者抑制性唤起，女性的比例更高。在一个大的本科生样本中(N=2047)，我们复制了DT性状的预期性别差异，社会性,和性兴奋/抑制。我们发现非异性恋女性在某些特征上是“男性转移”的，但是这些转变在大多数异性恋和双性恋个体中往往是最强烈的。此外，我们发现社会性的性别差异，性兴奋,性抑制与性取向呈线性无关。相反，社会性和性兴奋以曲线（倒U型）方式与性取向有关，尤其是女性。与双性恋和同性恋相关的特征有些不同的事实与以下观点一致：不同的发育途径可能导致这些离散的性吸引模式。
