"The incidence of casual sex is inversely proportional to the strength of attachment you experienced in childhood. The less attachment you had as a kid to your parents, the more likely it is that you will exhibit promiscuous behavior in adolescence. The reverse is also true. The stronger and more secure attachment you had to your parents the more likely it is that you will avoid promiscuity in adolescence (as well as many other high-risk behavior). We can now predict the level of life and relationship satisfaction toddlers will have in adulthood based upon the amount of affection they received as toddlers. Extravagant affection in toddlerhood predicts healthier life and relationship skills in adulthood. "