“…Individuals who have a larger and denser drug network (Latkin et al, 1995; Neaigus et al, 1996), including more alcohol and crack users (Latkin, Mandell, & Vlahov, 1996), tend to have a greater number of sex partners. However, there is little understanding of the processes through which these networks may influence members’ engagement in high-risk sexual behavior (Frey et al, 1995; Friedman, Curtis, Neaigus, Jose, & DesJarlais, 1999; Sherman, Latkin, & Gielen, 2001). One study of drug using women highlighted the potential importance of social norms, finding that women with larger drug networks reported having fewer friends who talked about condoms and encouraged condom use (Latkin, Forman, Knowlton, & Sherman, 2003).…”