“…They have an early onset of antisocial conduct and juvenile justice activity often prior to age 10, engage in more varied and severe forms of delinquency and violence, are more prolific, have longer careers and delayed desistance, and have frequent, overlapping, and often unsuccessful involvement in the criminal justice system. Given this extremity, there is a particular focus on the most violent and severe criminals evidenced by increasingly enriched samples of offenders including prison homicide offenders (Cunningham, Sorensen, Vigen, & Woods, 2010), multiple homicide offenders (DeLisi & Scherer, 2006;Wright, Pratt, & DeLisi, 2008), homicide offenders (Jennings & Piquero, 2008), sex offenders (Harris et al, 2009;, and high-risk or serious/violent/chronic juvenile delinquents (Baglivio, 2009;Krebs, Lattimore, Cowell, & Graham, 2010;Mulvey et al, 2010). Indeed, criminologists increasingly suggest that the criminal career paradigm is an appropriate framework for studying the most severe forms of crime (Soothill, Fitzpatrick, & Francis, 2009), an avenue of research that historically was examined by forensic psychiatrists.…”