Because of the vast improvements in adolescent substance use assessment, it is widely recognized that adolescent substance use disorders (SUD) encompasses diverse drugs, patterns and etiologies and are characterized by extensive heterogeneity in other life domains. The next step in advancing adolescent SUD assessment is to classify adolescents…

Maintains that the equal marginal value principle may not be optimal in the analysis of the cost-effectiveness of policies to reduce auto emissions, the economics of garbage disposal, and the economics of pollution abatement. Argues that examining these exceptions can help students understand the equal marginal value principle. (MJP)