We adopt an evolutionary approach to investigate whether and when condi-tional cooperation can explain the voluntary contribution phenomenon oftenobserved in public goods experiments and in real life. Formally, conditionalcooperation is captured by a regret parameter describing how much an...

Similar to Levati and Neugebauer (2001), a clock is used by which participantscan vary their individual contributions for voluntarily providing apublic good. As time goes by, participants either in(de)crease their contributiongradually or keep it constant. Groups of two poorly and two...

We conducted a laboratory study with a public goods game in which contributions are notsubmitted all at once but incrementally as coordinated in real time by a clock. Individualspress a button as soon as the clock equals their willingness to contribute. This publicgoods institution exploits the...

We examine the effects of leading by example in voluntary contributionexperiments. Leadership is implemented by letting one group membercontribute to the public good before followers do. Such leadershipincreases contributions in comparison to the standard voluntary contributionmechanism,...

We use a two-person linear voluntary contribution mechanism with stochastic marginal benefits from the public good to examine the effect of imperfect information on contributions levels. To assess prior risk attitudes, individual valuations of several risky prospects are elicited via a...

Experiments suggest that communication increases the contribution topublic goods (Ledyard, 1995). There is also evidence that, when contemplatinga lie, people trade off their private benefit from the lie with theharm it inflicts on others (Gneezy, 2005). We develop a model of bilateralpre-play...

We report the results of an experimental study that compares voting mechanismsin the provision of public goods. Subjects can freely decide how much they want tocontribute. Whether the public good is finally provided is decided by a referendumunder full information about all contributions. If...

Leadership is important for the well-functioning of organizations. Weexamine the effects of leadership on contributions in public goods experiments.Leadership by example is implemented by letting one groupmember contribute to the public good before followers do. Such leadershipincreases...

A robust nding of repeated public goods experiments is that high initialcontribution rates sharply decline towards the end. This paper reports onan exploratory experiment designed to discover whether such a decline is simply triggered by the usual experimental practice of publicly informing...

In dieser Arbeit wird die gemeinschaftliche Produktion eines Informationsgutes unter besondererBerücksichtigung des Reputationsmechanismus am Beispiel von Ciao.com empirischuntersucht. Es werden die Mechanismen der erfolgreichen Interaktion zwischen privaten Personen,die zur gemeinschaftlichen...