We conduct a laboratory experiment to investigate the evolution of altruism and strategic giving from childhood to adulthood. 334 school-age children and adolescents (from K to 12th grade) and 48 college students participated in a one-shot dictator game and a repeated alternating version of the same dictator game. Each dictator game featured the choice between a fair split (4, 4) and a selfish ...

Integrating information from existing research, qualitative ethnographic interviews, and participant observation, we designed a field experiment that introduces idiosyncratic environmental risk and a voluntary sharing decision into a standard public goods game. Conducted with subsistence resource users in rural villages on the Kamchatka Peninsula in Northeast Siberia, we find evidence consisten...

There have been major advances in the theoretical study of the determinants of cooperation with many applications in economics and the social sciences. A growing experimental literature has studied the determinants of cooperation, tested different predictions of the theory, and suggested an empirical solution to the problem of multiple equilibria in infinitely repeated games. To provide a robus...

Human populations are both highly cooperative and highly organized. Human interactions are not random but rather are structured in social networks. Importantly, ties in these networks often are dynamic, changing in response to the behavior of one's social partners. This dynamic structure permits an important form of conditional action that has been explored theoretically but has received little...

Cooperation among genetically unrelated individuals can be supported by direct reciprocity. Theoretical models and experiments with adults show that the possibility of future interactions with the same partner can promote cooperation via conditionally cooperative strategies such as tit-for-tat (TFT). Here, we introduce a novel implementation of the repeated Prisoner's Dilemma (PD) designed for ...

FC Portugal Rescue team is the result of a cooperation project between the Universities of Aveiro and Porto in Portugal. The project started in January 2004 following previous collaborations of these two Portuguese Universities in RoboCup simulation league and associated competitions: coach competition, simulation league presentation competition and simulation 3D competition. FC Portugal Rescue...

An achievable rate region for a 3-node cooperative multiple access channel (CMAC) is presented in this paper. A CMAC contains multiple users cooperatively transmitting information to a single destination node. It includes the traditional multiple access channel that assumes no communication between source nodes, and multiple input single output (MISO) system that contains ideal links between so...