“…This sample of youth has been included in previous research on risk and protective factors (Elkovitch, Viljoen, Scalora, & Ullman, 2008; Latzman, Viljoen, Scalora, & Ullman, 2011; Spice, Viljoen, Latzman, Scalora, & Ullman, 2013; Viljoen, Elkovitch, Scalora, & Ullman, 2009; Viljoen et al, 2008). However, the current study has a different focus (i.e., dynamic change) and does not include any analyses that are redundant with prior work.…”