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>

Numerous gift exchange experiments have found a positive relationship between employers' wage offers and workers' effort levels. In (almost) all these experiments the employer both owns and controls the firm. Yet in reality many firms are characterized by the separation of ownership and control....

We investigate expectation formation in a controlled experimental en- vironment. Subjects are asked to predict the price in a standard asset pricing model. They do not have knowledge of the underlying market equilibrium equa- tions, but they know all past realized prices and their own...

We investigate expectation formation in a controlled experimental en-vironment. Subjects are asked to predict the price in a standard asset pricingmodel. They do not have knowledge of the underlying market equilibrium equa-tions, but they know all past realized prices and their own predictions....

This discussion paper resulted in a publication in <I>Games and Economic Behavior</I> (2014). Volume 86, pages 77-95.<P> Minority games are a stylized description of strategic situations with both coordination and competition. These games are widely studied using either simulations or laboratory...</p></i>

This discussion paper led to a publication in the <I>Journal of Economic Dynamics & Control</I>. Volume 36(8), pp. 1101-1120.<P> Recent studies suggest that the type of strategic environment or expectation feedback can have a large impact on whether the market can learn the rational fundamental price. We...</p></i>

The main contribution of this study is the finding that round numbers can act as price barriers for individual stocks. In addition, a first step is made to explain this and the related phenomena of round number clustering by testing two competing hypotheses, using data from the Dutch stock...

This discussion paper resulted in an article in the 'European Economic Review' (2006). Volume 50, issue 8, pages 1937-1950.<P> The main contribution of this study is the finding that round numbers can act aspricebarriers for individual stocks. In addition, a first step is made to explain this and...</p>

This discussion paper resulted in a publication in the <A href="http://www.sciencedirect.com/science/article/pii/S0167487010000929">'Journal of Economic Psychology'</A>, 31(6), 964-84.<P>In repeated number guessing games choices typically converge quickly to the Nash equilibrium. In positive expectations feedback experiments, however, convergence to the equilibrium price tends...</p></a>

In an influential study, Mas and Moretti (2009) find that “worker effort is positively related to the productivity of workers who see him, but not workers who do not see him”. They interpret this as evidence that social pressure can reduce free riding. In this paper we report an attempt to...