Chapter 1 introduces the thesis providing an overview of the common themes and methods underlying this research. Chapter 2 reports an experiment that examines the characteristics of effective leaders in a leader-follower voluntary contributions game. We focus on two factors: leaders’...

One lingering puzzle is why voluntary contributions to public goods decline over time in experimental and real-world settings. We show that the decline of cooperation is driven by individual preferences for imperfect conditional cooperation. Many people's desire to contribute less than others,...