Holzleitner Iris J, Driebe Julie C, Arslan Ruben C, Hahn Amanda C, Lee Anthony J, O'Shea Kieran J, Gerlach Tanja M, Penke Lars, Jones Benedict C, DeBruine Lisa M
Institute of Neuroscience and Psychology, University of Glasgow, Glasgow, UK.
School of Social Sciences, University of the West of England, Bristol, UK.
Evol Hum Sci. 2022 Sep 28;4:e47. doi: 10.1017/ehs.2022.41. eCollection 2022.
Mate preferences and mating-related behaviours are hypothesised to change over the menstrual cycle to increase reproductive fitness. Recent large-scale studies suggest that previously reported hormone-linked behavioural changes are not robust. The proposal that women's preference for associating with male kin is down-regulated during the ovulatory (high-fertility) phase of the menstrual cycle to reduce inbreeding has not been tested in large samples. Consequently, we investigated the relationship between longitudinal changes in women's steroid hormone levels and their perceptions of faces experimentally manipulated to possess kinship cues (Study 1). Women viewed faces displaying kinship cues as more attractive and trustworthy, but this effect was not related to hormonal proxies of conception risk. Study 2 employed a daily diary approach and found no evidence that women spent less time with kin generally or with male kin specifically during the fertile phase of the menstrual cycle. Thus, neither study found evidence that inbreeding avoidance is up-regulated during the ovulatory phase of the menstrual cycle.
配偶偏好和与交配相关的行为被假定会在月经周期中发生变化，以提高生殖适应性。最近的大规模研究表明，先前报道的与激素相关的行为变化并不稳定。关于女性在月经周期的排卵期（高生育力阶段）与男性亲属交往的偏好会降低以减少近亲繁殖的提议，尚未在大样本中得到验证。因此，我们通过实验研究了女性类固醇激素水平的纵向变化与她们对经人为操纵带有亲属线索的面孔的认知之间的关系（研究1）。女性认为显示亲属线索的面孔更具吸引力和可信度，但这种效应与受孕风险的激素指标无关。研究2采用每日日记法，没有发现证据表明女性在月经周期的排卵期与亲属相处的时间总体上减少，或与男性亲属相处的时间特别减少。因此，两项研究均未发现证据表明在月经周期的排卵期近亲回避行为会增加。
