国际期刊《行为学》（Ethology）3月刊上刊登的一项研究指出，男人能分辨出女性声音的微小变化，排卵期时，女人的声音对男性最具吸引力。
每个月，女人的身体都会随着生理周期的变化出现一些微妙转变，就连声音也不例外。
美国亚当斯州立学院的心理学家内森·皮托内和纽约州立大学奥尔巴尼分校的戈登·盖洛普教授共同进行了这项研究。他们对10位女性进行了录音，每人4段，分别来自于完整月经周期的不同时间段，如排卵期、安全期、月经来潮时等。之后三组男性分别听这些录音，并且给出评价。结果发现，同一个女人，在排卵期与月经期的声音获得的评价大不相同，对男人的吸引力也不同。在男人看来，女人排卵期时声音最动听，月经期则最不能吸引他。
此外，也有研究显示，男性通常会在潜意识中判断女性的生理周期。例如在歌厅中，演唱者在排卵期时获得的小费会比月经期时的小费高80%。
研究者分析，月经期的女性体内的雌性激素变化会导致声音的细微改变，“一个人的声音中会携带大量与繁殖有关的信息，这是人类进化的结果。”(生物谷 Bioon.com)
doi:10.1111/j.1439-0310.2011.02010.x
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The Unique Impact of Menstruation on the Female Voice: Implications for the Evolution of Menstrual Cycle Cues
R. Nathan Pipitone, Gordon G. Gallup Jr
Research shows that hormonal changes in women across the menstrual cycle affect vocal production. Most work has documented shifts at high fertility times (i.e., ovulation) or during premenstruation. However, hormonal changes at menstruation also affect female physiology and behavior and could affect vocal production. The present studies investigated perceptual differences in voices recorded during menstruation compared with recordings taken at other times of the menstrual cycle. Results show that male raters could reliably identify voices recorded during menstruation with or without the presence of a voice recorded closest to ovulation. In addition, voices recorded at menstruation were identified as being the most unattractive. These findings indicate that voice recordings taken at times of lowest fertility may uniquely impact women’s vocal production and that perceptions of voice based on cycle phase are not specific to the time of heightened fertility. Implications for the evolution of human menstrual cycle cues are discussed.
