Published as:"The Nature of Common-Pool Resource Problems," Rationality and Society 2(3), July 1990, 335-358."A large, multidisciplinary literature focuses on the problems occurring when multiple individuals concurrently use common-pool resources such as fisheries, grazing areas, airsheds, oil...

Subsequently published as:"Incorporating Motivational Heterogeneity into Game Theoretic Models of Collective Action." Public Choice, 117, 2003, 295-315."Understanding cooperation in the context of social dilemma games is fundamental to understanding how alternative institutional arrangements may...