“…To understand familial risk and protective factors associated with cannabis use, a number of longitudinal and cross-sectional studies have examined parental marital status (Amato and Keith, 1991;Hayatbakhsh et al, 2006;Ledoux et al, 2002;Needle et al, 1990), parental mental health status, (Weissman et al, 1997;Cortes et al, 2009) and their respective associations with illegal substance use (including cannabis) in children. These studies have largely focused on adolescents (Cortes et al, 2009;Hayatbakhsh et al, 2006;Ledoux et al, 2002;Needle et al, 1990;Neher and Short, 1998) compared to young adults (Leib et al, 2002;Hayatbakhsh et al, 2009).…”