Recent decades have seen a rise in the use of physics methods to study different societal
phenomena. This development has been due to physicists venturing outside of their …

The complexity of many biological, social and technological systems stems from the richness
of the interactions among their units. Over the past decades, a variety of complex systems …

In the past years, network theory has successfully characterized the interaction among the
constituents of a variety of complex systems, ranging from biological to technological, and …

Reputation and reciprocity are key mechanisms for cooperation in human societies, often
going hand in hand to favor prosocial behavior over selfish actions. Here we review recent …

Why should you help a competitor? Why should you contribute to the public good if free
riders reap the benefits of your generosity? Cooperation in a competitive world is a …

Extensive cooperation among unrelated individuals is unique to humans, who often sacrifice
personal benefits for the common good and work together to achieve what they are unable …

Evolutionary game theory is a truly interdisciplinary subject that goes well beyond the limits
of biology. Mathematical minds get hooked up in simple models for evolution and often …

Why would natural selection favor the prevalence of cooperation within the groups of selfish
individuals? A fruitful framework to address this question is evolutionary game theory, the …

Humans prefer relatively equal distributions of resources,,,,, yet societies have varying
degrees of economic inequality. To investigate some of the possible determinants and …

Network reciprocity has been widely advertised in theoretical studies as one of the basic
cooperation-promoting mechanisms, but experimental evidence favoring this type of …