Although the benefits of sex education are often questioned, numerous studies have shown that the more knowledgeable a person is about sexuality, the less likely he or she is to engage in early sexual activities. To compare the differences in sexual knowledge, attitudes, and contraceptive choice between those adolescents who talk to their parents about sexuality and those who do not, 13 female and 11 male adolescents, aged 12 to 14, and their parents completed the Miller-Fisk Sexual Knowledge Test and Calderwood's Sexual Checklist. The results showed that amount of communication seemed to have had no effect on the children's sexual knowledge scores, but that those children who discussed sexuality frequently with their parents had attitudes toward sexuality that highly correlated with those of their parents. This finding may help to explain why children who can talk to their parents about sexuality tend to be more responsible for their behavior. (Author/JAC)