The purpose of this study was twofold: first, to examine the sexual behavior of emerging adult women in relation to their sexual knowledge, sexual attitudes, and perceptions of their parents' sexual attitudes; and second, to discuss the implications of this research in working with young adult women. Three hundred and sixty-four college-age women were administered the Sexual Experiences Inventory, Miller-Fisk Sexual Knowledge Questionnaire, and the Hendrick Sexual Attitude Scale. Ninety-six percent of the sample reported primarily heterosexual behavior. Sexual knowledge of participants was not related to their reports of sexual behavior. The sexual attitudes of college-age women and their perceptions of their parents' attitudes toward sexual behavior were found to relate positively to participant sexual permissiveness and sexual practice. The implications of these findings were discussed in relation to working with families and providing effective interventions to reduce unsafe sexual practices among emerging adult women. (Contains 3 tables.)