of a Prisoner's Dilemma game. When time preferences are heterogeneous and bounded away from one, how "much" cooperation … can be achieved by an ongoing group? How does group cooperation vary with the group's size and structure? For an arbitrary … distribution of discount factors, we characterize the maximal average co-operation (MAC) likelihood of this game. The MAC …

We find that contrary to common perception, cooperation as equilibrium of the infinitely repeated discounted prisoner …-discount factor parameter space cooperation equilibria are strictly risk dominated by non-cooperation (according to the Harsanyi …

The paper shows that being able to forecast another player's actual cooperation better than pure chance can change … forecasting of the opponent's cooperation (cooperate if and only if each other is forecasted to cooperate). …

Epstein (1998) demonstrates that in the demographic Prisoner's Dilemma game it is possible to sustain cooperation in a … sustained cooperation in a one-dimensional version of the model. Defectors are forced out of cooperation zones due to a …

intertemporal substitution facilitates co-operation by decreasing their evaluation of short-run gains from deviations and increasing … that of losses from punishments. Goods' markets and money may hinder co-operation by allowing players to reallocate short … markets always make co-operation harder. Financial markets' imperfections facilitate co-operation by opposing this effect. …

In this paper we take up a model of Okada (1996) to describe the possibility of collective cooperation in a n …

, the less likely cooperation will be. …