This study attempts to challenge the commonly held belief that the majority of sexual perpetrators on college campuses are serial perpetrators by explicitly asking perpetrators how many people and different days they perpetrated. It found when adding these two questions, the rate of serial perpetrators decreased from 90% to 30%.

Swartout, K. M., Koss, M. P., White, J. W., Thompson, M. P., Abbey, A., & Bellis, A. L. (2015). Trajectory analysis of the campus serial rapist assumption. JAMA pediatrics, 169(12), 1148-1154.