We show in a public goods experiment on three continents that conditional cooperation is a universal behavioral regularity. Yet, the number of conditional cooperators and the extent of conditional cooperation are much higher in the United States than anywhere else.

Laruelle and Widgrén (1998) have raised the question of whether the allocation of voting power in the EU is fair. This paper extends some of their results insofar as (1) it deals with the consequences if the square root rule - which is the basis for calculating fair shares of voting power - is...

We study with a sample of 1,070 primary school children, aged seven to eleven years,how altruism in a donation experiment is related to children’s risk attitudes and intertemporalchoices. Examining such a relationship is motivated by theories of reciprocalaltruism that provide a cornerstone to...

In markets where transactions are governed by contractual incompleteness, revealed intentions to evade taxes may affect market performance. We experimentally examine the impact of tax evasion attempts on the performance of credence goods markets, where contractual incompleteness results from...

Empirical literature on moral hazard focuses exclusively on the direct impact of asymmetric information on market outcomes, thus ignoring possible repercussions. We present a field experiment in which we consider a phenomenon that we call second-degree moral hazard - the tendency of the supply...

Arad and Rubinstein (2012a) have designed a novel game to study level-k reasoning experimentally. Just like them, we find that the depth of reasoning is very limited and clearly different from equilibrium play. We show that such behavior is even robust to repetitions, hence there is, at best,...

We compare experimentally the revealed distributional preferences of individuals and teams in allocation tasks. We find that teams are significantly more benevolent than individuals in the domain of disadvantageous inequality while the benevolence in the domain of advantageous inequality is...

Credence goods, such as car repairs or medical services, are characterized by severe informational asymmetries between sellers and consumers, leading to fraud in the form of provision of insufficient service (undertreatment), provision of unnecessary service (overtreatment) and charging too much...