Committees improve decisions by pooling independent information of members, but promote manipulation, obfuscation, and exaggeration of private evidence when members have conflicting preferences. We study how self-interest mediates these conflicting forces. When members' preferences differ, no...

We present a model in which the media provide voters with information that is tainted by their own preferences, and derive an equilibrium in which media endorsements influence voting behavior. Competition for media endorsement causes political parties to adopt more centrist policies, which...

Committees improve decisions by pooling independent information of members, but promote manipulation, obfuscation, and exaggeration of private information when members have conflicting preferences. When members' preferences differ, the report submitted by any individual can not allow perfect...