Current law and economics scholarship analyzes efficient breach cases monolithically. The standard analysis holds that breach is efficient when performance of a contract generates a negative total surplus for the parties. However, by simplistically grouping efficient breach cases as of a single...

Norms of cooperation and punishment differ across societies, but also within a single society. In an experiment with two subject pools sharing the same geographical and cultural origins, we show that opportunities for peer punishment increase cooperation among students but not in the general...