This paper provides a new way to identify conditional cooperationin a real-time version of the standard voluntary contribution mechanism. Ourapproach avoids most drawbacks of the traditional procedures because it relieson endogenous cycle lengths, which are defined by the number of contributors...

In a large scale newspaper experiment 5,132 readers of the German weekly, Die Zeit, participated in a three-person bargaining game. In our data analysis we focus on (1) the influence of age, gender, profession and the medium chosen for participation on bargaining behavior and on (2) the external...

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...

This paper provides an overview on the simulations andexperiments we have done in order to better understandhuman-agent interaction in a market environment. We findthat the introduction of software agents does not necessarilyinduce a more efficient market. More surprisingly,information on the...

This paper studies how software agents influence the market behavior ofhuman traders. Programmed traders with a passive arbitrage seekingstrategy are introduced in a double auction market experiment with humansubjects in the laboratory. As a treatment variable, the influence ofinformation on the...

The goal of this paper is to provide an overview on the Virtual Laboratory infrastructurefor online economic experiments. We summarize our experience gainedfrom performing several economic experiments on the Internet. The experimentswe have run range from electronic markets to individual...