Self-reports of sexual assault are affected by a variety of factors including the number of questions, question phrasing, and context. Participants (307 women, 166 men) were randomly assigned to one of two forms of a questionnaire. One form had the tactics used to obtain forced sex as the initial frame of reference, whereas the other form had the type of sex that was forced as the initial frame of reference. Seventy-five percent of the women who received the tactics-first version reported that they had at least one victimization experience since the age of 14, as compared to 62% of the women who received the type-of-sex-first version. Sixty-nine percent of the men who received the tactics-first version reported that they had at least one perpetration experience since the age of 14, as compared to 36% of the men who received the type-of-sex-first version. These findings have implications for how questionnaires should be designed to maximize reporting of sexual assault incidents.