ABSTRACT
By what mechanisms do the new freedoms and responsibilities associated with young adulthood contribute to changes in substance use? This issue arose in our earlier book, and it is the driving question in our current effort. Specifically, we want to understand how some values, attitudes, and lifestyle behaviors change with the roles and responsibilities of young adulthood. We also want to understand how these values, attitudes, and behaviors might explain the effects of roles and responsibilities on substance use.
