effort and sabotage on a prize set by a principal) is extended to allow for coalitions. Using a sequential coalition … formation model with a coalition externality (larger coalitions make self-enforcing sabotage and synergy strategies more … effective), coalition members coordinate their sabotage-synergy activities. Our main result is a sufficient condition for the …

We investigate the incentives for social communication in the new social media technologies. Three features of online … social communication are represented in the model. First, new social media platforms allow for increased connectivity: i … attention of receivers. An important point of the paper is that social communication incentives diminish even as the reach or …

-binding price requests. Using a laboratory experiment, we examine how competition moderates the way such cheap-talk communication … granularity effects of cheap-talk communication on negotiation outcomes. Our results show that most of these effects survive with …

out actual competitive activities. This paper investigates players' incentives to conduct such pre-contest communication …