Understanding the roots of human cooperation among strangers is of great importance for solving pressing social dilemmas and maintening public goods in human societies. We study the development of cooperation in 929 young children, aged 3 to 6. In a unified experimental framework, we examine...

We study political dynasties in the United States Congress since its inception in 1789. We document historic and geographic patterns in the evolution and profile of political dynasties, study the extent of dynastic bias in legislative politics versus other occupations, and analyze the connection...