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 …

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 …

Combining evolutionary models with behavioral experiments can generate powerful insights
into the evolution of human behavior. The emergence of online labor markets such as …

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 …

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 …

The increasing integration of technology into our lives has created unprecedented volumes
of data on society's everyday behaviour. Such data opens up exciting new opportunities to …

Social norms can help solve pressing societal challenges, from mitigating climate change to
reducing the spread of infectious diseases. Despite their relevance, how norms shape …