“…In half of the studies that compared sexual murderers to nonsexual murderers or sexual offenders who had not committed homicide, sexual sadism was highest among offenders who perpetrated sexual homicide (Krueger, 2010). Indeed, sexual sadism is an important feature of the most violent sexual offenses, such as serial sexual homicide (Sewall et al, 2013;Warren et al, 1996), sexual homicide (Beauregard, 2012;Hazelwood et al, 1992;Hill et al, 2006;Vettor et al, 2014;Yarvis, 1995) and rape/sexual assault (Dietz et al, 1990;Marshall et al, 2002;Vettor et al, 2014). Moreover, deviant sexual interests are significantly associated with sexual offending and general forms of recidivism (Hanson and Bussiere, 1998;Hanson and Harris, 2000;Hanson and Morton-Bourgon, 2005;Woodworth et al, 2013).…”