Concern about potential free riding in the provision of public goods has a long history. More recently, experimental economists have turned their attention to the conditions under which free riding would be expected to occur. A model of free riding is provided here which demonstrates that...

Social preference research has fundamentally changed the way economists think about many important economic and social phenomena. However, the empirical foundation of social preferences is largely based on laboratory experiments with self-selected students as participants. This is potentially...

In the last thirty years, economists and other social scientists have investigated people’s normative views on distributive justice. Here we study people’s normative views in social dilemmas, which underlie many situations of economic and social significance. Using insights from moral...

This paper studies gender differences in strategic situations. In two experimental guessing games - the beauty contest and the 11-20 money request game - we analyze the depth of strategic reasoning of women and men. We use unique data from an internet experiment with more than 1,000...

Economists are increasingly turning to the experimental method as a means to estimate causal effects. By using randomization to identify key treatment effects, theories previously viewed as untestable are now scrutinized, efficacy of public policies are now more easily verified, and stakeholders...

We empirically investigate the effect of social preferences on portfolio choice. We use administrative investor data and link them to behavior in a controlled experiment and to survey responses. We show that social preferences rather than (biased) risk-return expectations are predictive for...

Unfair intentions provoke negative reciprocity from others, making their concealment potentially beneficial. This paper explores whether people hide their unfair intentions from others and how hiding intentions is itself perceived in fairness terms. Our experimental data show a high frequency of...

Gift exchange experiments have demonstrated that norms can affect labor market outcomes and provided an explanation for involuntary unemployment. However, conflicting results from laboratory and field experiments have questioned the relevance of gift exchange and helped spark an ongoing debate...

Risk aversion (a 2nd order risk preference) is a time-proven concept in economic models of choice under risk. More recently, the higher order risk preferences of prudence (3rd order) and temperance (4th order) also have been shown to be quite important. While a majority of the population seems...

A large and growing literature has demonstrated that explicit incentives, such as enforceable contracts, can lead agents to withhold effort. We investigate when this behavioral result arises. In an extensive laboratory experiment, we find that imposing control through an enforceable contract is...