We propose a model of political persuasion in which a biased newspaper aims to convince voters to vote for the government. Each voter receives the newspaper's report, as well as an independent private signal. Voters then exchange this information on social media and form posterior beliefs,...

A continuum of contestants are choosing whether to enter a competition. Each contestant has a type, and of those who enter, the ones with highest types receive prizes. A profit-maximising firm controls entry, and charges a price for it. I analyse how the mass and value of prizes determine...

A number of candidates are competing for a prize. Each candidate is privately informed about his type. The decision-maker who allocates the prize wants to give it to the candidate with the highest type. Each candidate can take a test that reveals his type at a cost. I show that an increase in...

A committee chooses whether to approve a proposal that some members may consider ethical. Members who vote for the proposal receive expressive utility, and all pay a cost if the proposal is accepted. Committee members have different depths of reasoning. The model predicts that features that...

We study the implications of participation in political collective action on identity and on interpersonal interactions using a laboratory experiment. We offer subjects the possibility to sign an online petition, which was either related to animal rights or the right to bear firearms. Before and...

Using a laboratory experiment, we study the incentives of individuals to contribute to a public good that is provided if and only if the fraction of contributors reaches a certain threshold. We jointly vary the size of the group, the cost of contributing, the required threshold, and the framing...

Using a laboratory experiment, we study the incentives of individuals to contribute to a public good that is provided if and only if the fraction of contributors reaches a certain threshold. We jointly vary the size of the group, the cost of contributing, the required threshold, and the framing...