See also <I>Social ties and coordination on negative reciprocity: The role of affect</I>, <A href="http://www.sciencedirect.com/science/article/pii/S0047272707000679">Journal of Public Economics'</A>, 2008, 92, 34-53.<P> This experimental study investigates how behavior changes after punishment for an unkind action. It also studies how fairness perceptions affect the reaction to...</p></a></i>

This paper experimentally investigates investment behavior.We find that global risk – i.e. risk independent of an agent’sinvestment decision (like political risk) – substantiallydecreases investment. Also effort to obtain the capital usedfor investment decreases investment substantially....

Interest groups are introduced in a spatial model of electoral competition between two political parties. We show that the presence of these interest groups increases the winning set, which is the set of policy platforms for the challenger that will defeat the incumbent. Therefore interest...

This discussion paper led to a publication in <A href="http://www.sciencedirect.com/science/article/pii/S0014292111000912">'European Economic Review'</A>, 56(2) 216-32.<P>This paper is concerned with a policy oriented macroeconomic experiment involving an 'international' economy with a relatively small 'home' country and a large 'foreign' country. It compares the economic...</p></a>

In the reported experiment different payment schemes are examined on theirincentive effects. Payment based on individual, team and relative performance are compared. Subjects conducted computerized tasks that required substantial effort. The results show that individual and team payment induced...

This discussion paper led to a publication in <A href="http://www.sciencedirect.com/science/article/pii/S0165489610000569">'Mathematical Social Sciences'</A> 60(3), 210-16.<P>Interest groups are introduced in a spatial model of electoral competition between two political parties. We show that, by coordinating voting behavior,these interest groups increase the winning set, which...</p></a>

This discussion paper resulted in a publication in the <A href="http://www.sciencedirect.com/science/article/pii/S0167268113003041">'Journal of Economic Behavior & Organization'</A>, 2014, 98, 29-40.<P> We analyze one of the explanations why people participate in lotteries. Our hypothesis stipulates that part of the value that a unit of money buys in lotteries is consumed...</p></a>

This is an experimental study of a three-player power-to-take game where a take authority is matched with two responders. The game consists of two stages. In the first stage, the take authority decides how much of the endowment of each responder that is left after the second stage will be...