We investigate strategic communication about the social impact of costly prosocial actions. A
'sender'with noisy information about impact sends a cheap-talk message to a 'receiver', upon …

We propose a model where competing leaders influence the social norm adopted in their
group provided it is optimal for their members. Individuals are instrumental in enforcing such …

In the first chapter («Optimal Vote Buying» coauthored with Leon Musolff, Princeton
University), we analyze a vote buying problem. We show that bribing a supermajority can be …

We consider the problem of a decision-maker who seeks for advice from several experts.
The experts have reputation concerns which generate incentives to herd on the prior belief …