According to Thornhill and Gangestad, a female's orgasm correlates positively with:
a. Symmetry of partner.
b. Number of sexual encounters.
c. Amount of relationship with partner.
d. Male pheromones.
Question 2
Mating with someone other than the supposed pair-bonded partner is known as:
a. Extra pair copulation.
b. Mate guarding.
c. Handicapping principle.
d. Fluctuating encounters.