Money illusion means that people behave differently when the same objective situation is represented in nominal or in real terms. To examine the behavioral impact of money illusion we studied the adjustment process of nominal prices after a fully anticipated negative nominal shock in an...

Economists long considered money illusion to be largely irrelevant. Here we show, however, that money illusion has powerful effects on equilibrium selection. If we represent payoffs in nominal terms, choices converge to the Pareto inefficient equilibrium; however, if we lift the veil of money by...

Corruption is the great disease of government. It undermines the efficiency of the public sector in many countries around the world. We experimentally study civic engagement (CE) as a constraint on corruption when incentives are stacked against providing CE. We show that CE is powerful in...

The expression "cash-for-votes" describes a form of vote buying in which candidates for office pay individuals in exchange for their votes. That practice undermines the functioning of democracy but is pervasive in many parts of the world, especially in the Global South. We discuss estimates of...

Do democratically chosen rules lead to more cooperation and, hence, higher efficiency, than imposed rules? To discuss when such a "dividend of democracy" obtains, we review experimental studies in which material incentives remain stacked against cooperation (i.e., free-riding incentives prevail)...

According to economists, severe legal sanctions deter violations of the law. According to legal scholars, people may obey law backed by mild sanctions because of norm-activation. We experimentally investigate the effects of mild and severe legal sanctions in the provision of public goods. The...

Introducing a threshold in the sense of a minimal project size transforms a public goods game with an inefficient equilibrium into a coordination game with a set of Pareto-superior equilibria. Thresholds may therefore improve efficiency in the voluntary provision of public goods. In our one-shot...

The expression “cash-for-votes” describes a form of vote buying in which candidates for office pay individuals in exchange for their votes. That practice undermines the functioning of democracy but is pervasive in many parts of the world, especially in the Global South. We discuss estimates...

Repeated interactions provide a prominent but paradoxical hypothesis for human cooperation in one-shot interactions. Intergroup competitions provide a different hypothesis that is intuitively appealing but heterodox. We show that neither mechanism reliably supports the evolution of cooperation...

We review the vast literature on social preferences by assessing what is known about their fundamental properties, their distribution in the broader population, and their consequences for important economic and political behaviors. We provide, in particular, an overview of the empirically...