The impact of recreational marijuana legalization on rates of use and behavior: A 10-year comparison of two cohorts from high school to young adulthood.

Although many states' policies and laws concerning marijuana use have recently become more permissive, little is known about the impact of recreational marijuana legalization (RML) on rates of use, risk factors associated with use, and patterns of use over time. We compared samples from 2 longitudinal studies focused on understanding risk and protective factors related to substance use from adolescence to young adulthood (N = 1,468). The samples...