Risk perception was examined in relation to sexual victimization among 262 college women. Participants were presented with written vignettes that described hypothetical situations with a stranger and with an acquaintance. Participants' hypothetical decision to leave a potentially risky situation with an acquaintance predicted rape and revictimization during an 8-month follow-up period. Revictimized participants had significantly delayed responses compared to previously victimized respondents who were not revictimized. Multivariate models indicated that prior victimization and delayed risk response increased vulnerability for rape and other forms of sexual victimization. Results highlight the need to assess multiple aspects of risk perception, including threat identification and behavioral responses to hypothetical or real situations. Findings suggest that delayed response to danger cues might be one factor that increases vulnerability for revictimization by acquaintances.