Similar to parents, teens may even find it repulsive to talk to their parents about sex.
Many parents are also unaware of their teens' actual behavior.
South, "Community Effects on Youth Sexual Activity," Journal of Marriage and Family, Vol.
One study found that those who begin sexual activity at age 13 are twice as likely to become infected as peers who remain sexually abstinent throughout their teen years.
Karofsky, Lan Zeng, and Michael Kosorok, "Relationship Between Adolescent-Parental Communication and Initiation of First Intercourse by Adolescent," Journal of Adolescent Health, Vol.
Davis and Friel, "Adolescent Sexuality"; Dittus and Jaccard, "Adolescents' Perceptions of Maternal Disapproval of Sex"; Fingerson, "Do Mothers' Opinions Matter in Teens' Sexual Activity? In 1960, 5 percent of all children born were to unmarried mothers.