cooperation. The robustness of this observation is tested against different levels of uncertainty in the strategy adoption process … having a lower fitness than defectors, the fact that positive values of w facilitate cooperation is quite surprising. We show … interaction network and thus also the impact of uncertainty by strategy adoptions on the evolution of cooperation …

cooperative equilibrium, based on the idea that players have a natural attitude to cooperation, has shown promising results for …

material payoff. Cooperative behavior when non-cooperation is a dominant strategy (with respect to the material payoffs) is … particularly puzzling. Here we propose a novel approach to explain cooperation, assuming what Halpern and Pass (2013) call …

(i) risk best explains the variation in cooperation rates across random matching ("stranger'') and one-shot treatments … cooperation in partner than stranger if and only if risk is high and temptation low and (v) women are more cooperative than the … understand which dimension of the dilemma (risk or temptation) is best targeted via interventions to yield improved cooperation …

We present a natural environment that sustains full cooperation in one-shot social dilemmas among a finite number of … emerge in equilibrium. The same environment leads to full cooperation in the prisoners' dilemma …

collective sanctions because this increases the degree of cooperation between them. This effect is achieved by the delegation of … members result in higher intergroup cooperation, and whether the introduction of collective sanctions increases the amount of …

Cooperation in prisoner's dilemma games can usually be sustained only if the game has an infinite horizon. We analyze … probability, where cooperation can occur in a subgame-perfect equilibrium only with the high probability). We find that the … termination rules do not significantly affect average cooperation rates. Specifically, employing a random termination rule does …

, and explains the degree of cooperation by a combination of five motives: the size of gains from cooperation, expectations …

cooperation is shaped by the way information about risk is presented (from description or from experience) and by differences in … lotteries with equivalent levels of risk. Cooperation rates in games vary with different levels of risk across decision … stochastic social dilemmas than in the lotteries. The findings highlight how an uncertain environment shapes cooperation and call …