can promote cooperation through a combination of sorting and opportunistic signaling, with late period defections by … remains unclear. In each of six treatments that vary the cooperation premium and the informational basis for reputation …, that with a high cooperation premium and good information, investment in reputation grows across sets of finitely …

cooperation), especially for Partners. These results suggest Take framing and Individual-level feedback increase the variability … of cooperation. …

We study the coevolution of cooperation, preferences and cooperative signals in an environment where individuals engage … in a signaling-extended prisoner's dilemma. We identify a new type of evolutionary equilibrium - a transitional … behavior, preferences, and signaling. We thereby offer an explanation for persistent regularities observed in laboratory and …

norms on cooperation. We find that under the signaling mechanism, less cooperative players disguise themselves in the rule …-following game, but this does not decrease cooperation overall. More importantly, the signaling mechanism has a heterogeneous effect … decreases cooperation in rule-breaking groups. Finally, the signaling mechanism tends to offset the decline of contributions …

conflict. We model conflict using an inter-group Tullock contest, and measure its effects upon cooperation using a multi …-level public good game. We demonstrate that conflict increases cooperation within groups, while decreasing cooperation between …We study cooperation within and between groups in the laboratory, comparing treatments in which two groups have …

conflict. We model conflict using an inter-group Tullock contest, and measure its effects upon cooperation using a multi …-level public good game. We demonstrate that conflict increases cooperation within groups, while decreasing cooperation between …We study cooperation within and between groups in the laboratory, comparing treatments in which two groups have …

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 …