月经周期对女性知觉性侵犯遭遇的影响

Women's Perceptions of Men's Sexual Coerciveness Change Across the Menstrual Cycle

女性在排卵期遭遇强奸或其它形式的性侵犯可能会受到较大伤害。进化历史中女性遭遇性侵犯的危险不断重现使现代社会女性在排卵期对男性性侵犯的线索较为敏感。本研究旨在探讨女性被试观看男性试图吸引其它女性的录像后如何评价每位男性性侵犯的可能性。研究发现接近排卵期的女性比不处于排卵期的女性更可能认为男性会进行性侵犯。这些发现显示，女性具有特定的知觉进化机制来警惕性侵犯，这种特定的进化机制可能受到月经变化的调节。

Ancestral women would have suffered higher costs if they were raped or sexually coerced during the fertile phase of their reproductive cycle. Accordingly， selection pressures should have made women more sensitive to cues of male sexual coerciveness near ovulation. Normally ovulating women watched videotaped interviews of men trying to attract another woman and then rated each man’s probable sexual coerciveness. Women nearing ovulation rated men as more coercive relative to women in the non-fertile phase. Moreover， fertile women’s judgments of men’s coerciveness were better predicted by an aggregate of women’s responses than were judgments of non-fertile women， suggesting that women are more attuned to salient cues of potential coerciveness during the fertile phase of the cycle， and thus， may be less error-prone. Because these findings are unlikely to be explained by general-purpose learning mechanisms， they suggest that women may possess specially designed perceptual counter-strategies that guard against male sexual coercion.