Utility function, group size, and the aggregate provision of a pure public good

First, we derive and interpret global stability conditions for the Cournot equilibrium in the McGuire model of aggregate provision of a pure public good under Cournot behavior, assuming that persons in a community have heterogeneous, general utility functions. Second, we show that under a reasonable assumption on utility functions, the aggregate provision of the public good increases unambiguously with the increase in the number of persons if the increase is as Section 3 stipulates. Copyright Martinus Nijhoff Publishers 1984