How we know the prevalence rates of drug use in the United States.

Explain how we know the prevalence rates of drug use in the United States. What are the limitations of this method? Be sure to include the two major data sources, one of which measures drug abuse across the lifespan, and the other that looks at drug use trends among young people. Include two facts related to drug use trends. (2B). The terms instrumental and recreational use, licit and illicit, and drug misuse and drug abuse are all intermingled, but it is important to understand what they mean individually and how they relate to each other. Define these terms and explain how they can relate to each other. (2C) Briefly, describe the biopsychosocial model of examining drug use.