In a series of experiments, we compare a situation where the same group of four subjects plays 25 repetitions of a public good game (partners condition) to a situation where subjects play this game in changing group formations over 25 periods (strangers condition). We observe that, on aggregate...

Lying to participants offers an experimenter the enticing prospect ofmaking "others' behaviour" a controlled variable,but is eschewed by experimental economists because it may pollute thepool of subjects. This paper proposes andimplements a new experimental design, the Conditional...

This discussion paper led to a publication in <A href="http://onlinelibrary.wiley.com/doi/10.1111/1467-9442.00182/abstract">'Journal of Economics'</A> 102(1) 23-39.<P>We compare a partners condition where the same small group of subjects plays arepeated public good game to astrangers condition where subjects play this game in changing group formations.Subjects in the partners...</p></a>

In a system of proportional representation, we study the interaction between a voter’s turnout decision and her party choice, and how these relate to party polarization. Quantal response equilibria predict such interaction effects. In particular they predict (i) a Polarization Effect: reduced...

In experimental investigations of the effect of real incentives, accountability—the implicit or explicit expectation of a decision maker that she may have to justify her decisions in front of somebody else—is often confounded with the incentives themselves. This confounding of accountability...

Rational expectations assumes perfect, model consistency between beliefs and market realizations. Here we discuss behaviorally rational expectations, characterized by an observable, parsimonious and intuitive form of consistency between beliefs and realizations. We discuss three case-studies....

This discussion paper resulted in an article in 'Games and Economic Behavior' (2013). Volume 77, issue 1, pages 41-60.<P> Numerous gift exchange experiments have found a positive relationship between employers' wage offers and workers' effort levels. In (almost) all these experiments the employer...</p>

We theoretically and experimentally study voter behavior in a setting characterized by plurality rule and mandatory voting, where voters choose from three options. We are interested in the occurrence of strategic voting in an environment where Condorcet cycles may occur. In particular, we focus...

This discussion paper resulted in a publication in <I>Auditing: A Journal of Practice & Theory</I> (2013). Volume 32(1), pages 1-31.<P> Contract audits aimed at reducing information asymmetry and transaction costs are frequently used in imperfect markets such as defense procurement. This contradicts...</p></i>