Couples with ____ problems are twice as susceptible to divorce.

Fetishistic behavior is most easily explained by ____.

“____” is probably the most common form of human sexual expression.

After abortion, the most widely experienced emotion is ____.

At puberty, the ____ produce(s) most of the sex hormones.

Alfred Kinsey relied most on which technique in conducting his sexual research?

According to Robert Sternberg’s triangular theory of love, “commitment” can ____.

Emergency contraceptive pills are essentially ____.

Almost ____ of same-sex couples include one partner over the age of fifty-five.

About ____ of the fluid that is ejaculated from the penis is sperm.