Because contraceptive pills introduce hormones that prevent ovulation and lead to temporary loss of fertility, women's natural preference fixates on similarity as in natural
infertile phases of the cycle.
In contrast, during
the infertile phase of the cycle, women seek cues of high investment in parenting and partnership, which are typically associated with fewer masculine features3.
Not exact matches
Fertility awareness is a set
of practices you can use to determine the fertile and
infertile phases of your menstrual
cycle.