adopted, and use of punishment opportunities. Students cooperate more than workers, and cooperation increases in both subject … cooperative task. The data show that clerical workers differ from college students in overall cooperation rates, strategies … pools when a personal punishment option is available. Students are less likely than workers to adopt strategies of …

. Providing both unobserved and observed punishment strongly enhances cooperation within groups – strikingly, even with less …Laboratory experiments by Fudenberg and Pathak (2010), and Vyrastekova, Funaki and Takeuch (2008) show that punishment … is able to sustain cooperation in groups even when it is observed only in the end of the interaction sequence. Our …

show that stochastic punishment falls short of sustaining cooperation in the repeated public good game. As punishment noise …Identifying mechanisms able to sustain costly cooperation among self-interested agents is a central problem across … social and biological sciences. One possible solution is peer punishment: when agents have an opportunity to sanction …