“…Because of such concerns, newer individual-level techniques such as latent class analysis, multilevel item response theory modeling, and nonparametric regression have increasingly been applied to the examination of offender specialization in recent years (e.g., Baker, Metcalfe, & Jennings, 2013; Brownfield & Sorenson, 1987; Hagan, Gillis, & Brownfield, 1996; Nieuwbeerta, Blokland, Piquero, & Sweeten, 2011; Osgood & Schreck, 2007; Raudenbush, Johnson, & Sampson, 2003; Sullivan et al, 2009). To date, no consensus exists on the best way to measure specialization; each approach offers unique insights into the extent, nature, or form of offender specialization (Sullivan & McGloin, 2014; Sullivan et al, 2009).…”