This paper provides a new way to identify conditional cooperationin a real-time version of the standard voluntary contribution mechanism. Ourapproach avoids most drawbacks of the traditional procedures because it relieson endogenous cycle lengths, which are defined by the number of contributors...

Which inequalities among individuals are considered unjust? This paper reportsthe results of an experiment designed to study distributive choices dealing with arbitrarilyunequal initial endowments. In a three-person distribution problem wheresubjects either know or do not know their endowments,...

Social institutions regulating group conduct have been regarded as necessaryfor human cooperation to transcend family bonds. However, manystudies in economics and biology indicate that reciprocity based on repeatedinteraction suffices to establish cooperation with non-kin. We shedlight on the...

Costly signaling of commitment to a group has been proposed as an explanation forparticipation in religion and ritual. But if the signal’s cost is too small, freeriders willsend the signal and behave selfishly later. Effective signaling may then be prohibitivelycostly. If the average level of...

The Shapley value of a cooperative transferable utility game distributes the dividendof each coalition in the game equally among its members. Given exogenous weightsfor all players, the corresponding weighted Shapley value distributes the dividendsproportionally to their weights. In this...

Understanding whether preferences are sensitive to the frame has been a major topic of debate in the last decades. For example, several works have explored whether the dictator game in the give frame gives rise to a different rate of pro-sociality than the same game in the take frame, leading to...

In the Ultimatum Game (UG) one player, named “proposer”, has to decide how to allocate a certain amount of money between herself and a “responder”. If the offer is greater than or equal to the responder’s minimum acceptable offer (MAO), then the money is split as proposed, otherwise,...

Human decision making often seems to be determined by the resolution of intrapersonal conflict. This paper conceptualizes the analysis of decisions governed by such dual self processes in individual decision contexts and strategic interactions. For this purpose, we define the solution concept...

In the analysis of normal form games that model strategic interactions between individuals, the Nash equilibrium is a significant contribution. However, this concept has some limits: often, it proposes a collective result undesirable by all and in some cases, this equilibrium is not realizable....

This paper reports the results of a meta-study of 89 prisoner's dilemma experiments comprising more than 3000 participants across 6 countries. We organize existing evidence and explain seemingly contradictory results in the existing literature by focusing on two dimensions of the dilemma:...