The following will explore the operation of evolved mechanisms connected with cycling fertility. I first address strategic shifts in women’s behavior near ovulation and hypothesize that certain behavioral shifts at high fertility reflect an increase in women’s intrasexual competition tactics...

Recent research shows that women experience nonconscious shifts across different phases of the monthly ovulatory cycle. For example, women at peak fertility (near ovulation) are attracted to different kinds of men and show increased desire to attend social gatherings. Building on the...