Motivating Campus Change (MC 2) is a grant designed to reduce risky alcohol use, behavior and related consequences among college students, as well as to change perceived drinking norms. The current application builds on our prior intervention trials to further explore conditions under which normative feedback can be used as an effective intervention tool. Our emphasis is on contrasting the efficacy of personalized normative feedback (PNF) regarding specific reference groups (i.e., gender, ethnicity, and residence-specific feedback) versus a generic (typical college student) reference group. We also wanted to contrast the efficacy of injunctive, descriptive, and combined normative feedback to control feedback in reducing alcohol use and negative consequences of high risk student drinkers. Lastly, we wish to evaluate potential moderators of the interventions efficacy.