Since campaign contributions reveal the actor’s party leanings, they take place in a domain of social observation and are likely to be subject to social effects. We conducted a field experiment to identify some of these social effects. We sent letters to 92,000 contributors from all U.S....

This paper estimates the effects of group identity on discrimination in the marketplace. We conducted an audit study in two electronics markets in São Paulo, Brazil during the 2014 Brazil World Cup (WC), and recorded the behaviour of 557 sellers in 922 market interactions. To identify...

This study examines whether charitable giving increases if donors have more choice about how their donations are used. In a field experiment, employees of large Albanian companies were asked to donate to projects administered by Down Syndrome Albania. Treatments varied in whether participants...

In this paper we make use of a unique dataset collected in the central train station of Kiel, Germany. A group ticket is used by individual proposers who search for co-travelers to share the ride with shortly before the train departure. The bargaining behavior resembles the Ultimatum game to the...

We conducted a framed field experiment to explore a situation where individuals have potentially competing social identities to understand how group identification and socialization affect in-group favoritism and out-group discrimination. The Dictator Game and the Trust Game were conducted in...

We conduct a field experiment on conflict in swimming pools. When all lanes are occupied, an actor joins the least crowded lane and asks one of the swimmers to move to another lane. The lane represents a contested scarce resource. We vary the actor’s valuation (high and low) for the good...

We conducted a framed field experiment to explore a situation where individuals have potentially competing social identities to understand how group identification and socialization affect ingroup favoritism and out-group discrimination. The Dictator Game and the Trust Game were conducted in...

We evaluate how traditional parties may respond to populist parties on issues that are particularly fitting for populist messages. The testing ground is the 2020 Italian referendum on the reduction of members of Parliament. We implement a large-scale field experiment, with almost one million...

Laboratory evidence shows that when people have to argue for a given position, they persuade themselves about the position’s factual and moral superiority. Such self-persuasion limits the potential of communication to resolve conflict and reduce polarization. We test for this phenomenon in a...