Research on so-called “undetected” rapists – men who commit rapes but who are either not reported or not prosecuted for their crimes – has clearly demonstrated that the old stereotypes about rapists are false. Undetected rapists, who represent the vast majority of rapists, and account for the vast majority of rapes, use extensive planning, often use alcohol and other drugs to render their victims vulnerable, and rely on minimal force to threaten and intimidate their victims into submission. A majority of these rapists are serial offenders, and the evidence suggests that they typically begin their offending careers during adolescence. Evidence also indicates that serial offenders account for more than 90% of all rapes. These data underscore the potential importance of testing non -stranger sexual assault kits and maintaining DNA databases derived from the processing of rape kits.Presenter: David LisakDr. David Lisak is a researcher and forensic consultant who for 25 years has studied the causes and consequences of interpersonal violence. His work has focused on the long term effects of sexual abuse in men, the relationship between child abuse and violence, and the motives and characteristics of rapists. Dr. Lisak has served as a consultant to judicial, prosecutor and law enforcement education programs across the country, and has conducted workshops in all fifty states. He consults widely with universities, the four services of the U.S. Military, the Department of Defense, and other institutions regarding sexual assault prevention and policies, and frequently serves as an expert witness in homicide and sexual assault cases. Dr. Lisak is a founding member of 1in6, a non-profit agency that serves men who were sexually abused as children.