Game theory is one of the key paradigms behind many scientific disciplines from biology to
behavioral sciences to economics. In its evolutionary form and especially when the …

A growing experimental literature studies the endogenous choice of institutions to solve
cooperation problems arising in prisoners' dilemmas, public goods games, and common …

Collective‐action problems pervade all societies as well as ecological systems used by
humans. Substantial evidence has accrued during the last several decades that human …

Increasingly it is argued that anti-corruption efforts have not worked because they are based
on inadequate theory, suggesting that collective action theory offers a better understanding …

More than half a century after the first experiment on the finitely repeated prisoner's dilemma,
evidence on whether cooperation decreases with experience—as suggested by backward …

Many people contribute to public goods but stop doing so once they experience free riding.
We test the hypothesis that groups whose members know that they are composed only of …

The natural tendency for humans to make and break relationships is thought to facilitate the
emergence of cooperation. In particular, allowing conditional cooperators to choose with …

We study prisoners' dilemmas played in continuous time with flow payoffs accumulated over
60 seconds. In most cases, the median rate of mutual cooperation is about 90 percent …

In an experiment, players' ability to learn to cooperate in the repeated prisoner's dilemma
was substantially diminished when the payoffs were noisy, even though players could …

Alone and together, climatic changes, population growth, and economic scarcity create
shared problems that can be tackled effectively through cooperation and coordination …