“…The utility of PPG for assessing adults who have sexually offended is relatively clear; for example, pedophilic sexual interests can be reliably detected even in nonadmitting adults (Blanchard, Klassen, Dickey, Kuban, & Blak, 2001). The few research teams conducting empirical studies of PPG use with adolescents who have sexually offended, however, have not yet found clear evidence of the external validity of these PPG results (Becker, Hunter, Goodwin, Kaplan, & Martinez, 1992; Becker, Kaplan, & Tenke, 1992; Clift et al, 2009; Gretton, McBride, Hare, O’Shaughnessy, & Kumka, 2001; Hunter, Goodwin, & Becker, 1994; Kaemingk, Koselka, Becker, & Kaplan, 1995; Rice, Harris, Lang, & Chaplin, 2012; Seto, Lalumière, & Blanchard, 2000).…”