“…It is the pattern of transition and stability on these sorts of variables across different developmental periods, as well as the underlying reasons for the observed patterns, that are of interest to researchers, theoreticians, practitioners, and policy makers (Barnett, Blumstein, & Farrington, 1987;Piquero & Mazerolle, 2001). For example, much has been learned from studies conducted within a criminal career paradigm regarding changes by age in crime type (Steffensmeier, Allan, Harer, & Streifel, 1989), versatility (Britt, 1996;Lo, Kim, & Cheng, 2008;McGloin, Sullivan, Piquero, & Pratt, 2007), severity (Ramchand, MacDonald, Haviland, & Morral, 2009), and criminal career length (Elliot, Huizinga, & Morse, 1987;LeBlanc & Frechette, 1989;Piquero, Brame, & Lynam, 2004) as well as the stability of offending across major developmental life periods (Day et al, 2007;Paternoster, Brame, & Farrington, 2001;Piquero, Brame, & Moffitt, 2005;Piquero & Buka, 2002). Recently, studies also have examined the dynamic interplay between criminal career dimensions, such as offending frequency and offending diversity (Brame, Paternoster, & Bushway, 2004;Monahan & Piquero, 2009).…”