1 Running head: FRIEND OR FOE Friend or Foe: Evaluation of Personal Use and Friends’ Use of Protective Behavioral Strategies and their Associations to Spring Break Drinking and Negative Consequences Melissa A. Lewis, Elisa Sheng, Irene Geisner, Isaac C. Rhew University of Washington Megan E. Patrick University of Michigan Christine M. Lee University of Washington Author Note Melissa A. Lewis, Irene Geisner, Isaac C. Rhew, and Christine M. Lee, Department of Psychiatry and Behavioral Sciences, University of Washington. Elisa Sheng, Department of Biostatistics, University of Washington. Megan E. Patrick, Institute for Social Research, University of Michigan. Please send correspondence concerning this article to Melissa A. Lewis, Department of Psychiatry and Behavioral Sciences, Box 354944, University of Washington, Seattle, WA 98195. Phone: 206-221-6932 Fax: 206-616-1705 E-mail: lewisma@uw.edu Data collection and manuscript preparation were supported by National Institute on Alcohol Abuse and Alcoholism Grant R01AA016099 awarded to C. M. Lee. Manuscript preparation was also supported by National Institute on Alcohol Abuse and Alcoholism Grant R03AA018735 awarded to M. E. Patrick.