More than one in six women will be sexually assaulted in their lifetimes, most by men they know. The risk of sexual assault by men is greatest for girls and women between the ages of 14 and 24 making this a critical time for intervention. Sexual assault has many immediate and long-term negative consequences for victims. Even a small increase in the ability of women to resist sexual assault will result in a substantial improvement in the mental and physical health of women. Recent research has suggested that many young women delay their resistance to unwanted sexual advances because they are not sure that they are reading the situation correctly, they do not want to hurt the man's feelings, or they are unsure whether they have the right to say no to some sexual activity and say yes to other activity. Earlier work from the researchers resulted in the development of a program affecting these critical areas. This program was shown to be effective in helping participants build skills and a knowledge base to help them resist sexual assault and to prepare them for better recovery following sexual assault. The randomized controlled trial (RCT) builds on this prior work. We will establish whether the demonstrated short term effectiveness of this theoretically and empirically sound rape resistance intervention for university women extends to longer periods. We will determine whether the program can reduce the one year incidence of sexual assault by 30% among women attending Canadian universities. The results will also be used to indicate how long the effects of the program last and will indicate at which point in time refresher sessions may be necessary. A lay summary of the findings of the trial with a focus on application will be provided to all Canadian universities and to Provincial/Territorial Ministries of Education. This will be followed up with contact with those most likely to be involved in current campus education efforts.