“…Consequently, subsequent model tests in samples from other geographic areas or time periods is needed. Second, while self-reported gang membership is commonly used (Boxer et al, 2015; Bjerregaard & Smith, 1993; Dishion et al, 2005; Esbensen et al, 2001; Fox et al, 2010; Klein, 1995; Tapia, 2011; Thornberry, Krohn et al, 2003) and empirically supported as a valid measure (Esbensen et al, 2010), there are risks with self-reported data including the possibility or over- or under-reporting. Finally, because gang membership in the sample was measured, in part, during the same time period (7 th through 10 th grades, when the respondents were 12 – 15 years old) as the items that comprised the SDM constructs, questions regarding temporal ordering cannot be definitively resolved.…”