What is the optimal size of expert committees? To address this question, I present a model of a committee of experts with career concerns. Each expert may observe an argument about the state of the world and is unsure about the arguments soundness. Experts may remain silent or compete for the...

In this paper we present a two-period model where a left-wing and a right-wing political party are solely interested in the politics they pursue. We assume that voters are fully rational but show reciprocal behavior. By contrast, political parties are not motivated by reciprocity. We show that...