Contract grazing is compared with retained ownership of cattle using two frameworks-decision theory and portfolio analysis. The study area is West Virginia. Contracting is optimal under a wide range of price and weather scenarios and decision criteria. It also dominates other alternatives based...

There is evidence to suggest that the effects of behavioral interventions may be limited to specific types of individuals, but methods for evaluating such outcomes have not been fully developed. This study proposes the use of finite mixture models to evaluate whether interventions, and,...

Communities That Care (CTC) is a prevention system designed to reduce adolescent substance use and delinquency through the selection of effective preventive interventions tailored to a community's specific profile of risk and protection. A community-randomized trial of CTC, the Community Youth...

Comprehensive community interventions pose several challenges to rigorous evaluation design. This article summarizes the recommendations for a feasible and rigorous design that were formulated by a 1991 conference on the evaluation of comprehensive community interventions. One such comprehensive...