In many species, females are more sexually attractive to males near ovulation. Some
evidence suggests a similar pattern in humans, but methodological limitations prohibit firm
conclusions at present, and information on physiological mechanisms underlying any such
pattern is lacking. In 202 normally-cycling women, we explored whether women's
attractiveness changed over the cycle as a function of two likely candidates for mediating
these changes: estradiol and progesterone. We scheduled women to attend one session …