Contemporaneous and Intertemporal Relationship Between the Consumption of Licit and Illicit Substances by Youth

Using a representative sample of the 1999 National School-based Youth Risk Behavior Survey, this study investigated the risky behavior of cigarette, alcohol, and marijuana consumption by underage students. The research analyzes the contemporaneous and intertemporal relationship between the use of these licit and illicit substances. Evidence of a gateway from cigarettes to marijuana was found; however, prior use of alcohol does not significantly increase the likelihood of currently using marijuana.