Peer influence and gender differences in problematic cannabis use among individuals with social anxiety.

Despite epidemiological reports indicating that individuals with social anxiety disorder (SAD) are at heightened risk for cannabis use disorders (CUD), there is a dearth of research investigating the mechanisms underlying the nature of this co-occurrence. The present study examined the role of a well-established risk factor for cannabis use, peer influence, on the relationship between symptoms of SAD and CUD in a non-referred sample (N = 123). Lifetime symptoms of SAD and CUD were assessed using a structured diagnostic interview. SAD symptoms were significantly correlated with CUD symptoms and this relationship was moderated by peer use of both alcohol and cannabis. Further, a gender effect indicated that the relationship between symptoms of SAD and CUD occurred only in women. Implications of these novel findings are discussed.