Recent scandals about sexual assaults on college campuses have provoked vehement debates about the scope of the problem. According to the White House task force formed to investigate the issue, 20 percent of undergraduate women — 1 in 5 — are sexually assaulted while in college. But some observers claim the problem has been blown way out of proportion. For example, Christina Hoff Sommers argued in a May 2014 article in Time magazine that this number is derived from biased samples and poorly-designed survey questions. Instead, she claims, only one-in-forty college women is a victim of rape or sexual assault.
Disagreement is not confined to political debate. In a 2011 report, the Bureau of Justice Statistics acknowledged that competing estimates of sexual violence have existed for two decades without ever being definitively resolved. In this brief we evaluate existing knowledge about the incidence and prevalence of sexual victimization of women attending American colleges and universities. We follow the Bureau of Justice Statistics definition of rape as a form of sexual assault that includes forced sexual intercourse, whether by physical or psychological coercion, involving penetration by the offender(s). We include in our definition of rape any act of sexual intercourse performed on an individual who is incapacitated as a result of being comatose, drugged, or asleep. To avoid ambiguity, we do not include sexual coercion or unwanted sexual contact such as grabbing or fondling—although the latter also meets the Bureau of Justice Statistics definition of sexual assault. Comparing multiple public health surveys—including nationally representative population surveys—we find it likely that between 7 and 10 percent of women experience forcible rape in college, and that somewhere between 14 and 26 percent experience sexual assault. more...