We study experimentally the effectiveness of communication in common value committees exhibiting publicly known … heterogeneous agents. These predict varying degrees of strategic communication. We use a 2 x 2 design varying the information … protocol (communication vs exogenous public signals) and the group composition (heterogeneous vs homogeneous). Results are only …

We consider a committee voting setup with two rounds of voting where committee members who possess private information … information in the first voting period. Coughlan (2000) shows that members reveal their information in a straw poll only if their … preferences are in fact homogeneous. By taking costs of time into account, we demonstrate that committees have strictly higher …

and statements, and we investigate whether communication improves information aggregation and the accuracy of group … decisions. Our findings suggest that the effect of communication depends on the underlying accuracy of individual judgments …. Communication improves accuracy when individuals tend to be incorrect, but diminishes it when individuals are likely to be correct …

We study experimentally the effectiveness of communication in common value committees exhibiting publicly known … heterogeneous agents. These predict varying degrees of strategic communication. We use a 2 x 2 design varying the information … protocol (communication vs exogenous public signals) and the group composition (heterogeneous vs homogeneous). Results are only …

treatments (different prior and signal distributions) that pose different challenges for the voters. In one, simply voting for …

conflicting interests. We show that the set of preferences that allow for the existence of an informative voting equilibrium can … voting threshold value. What's worse, the presence of the public information introduces an inefficient equilibrium which … robustly exists across different voting rules. To mitigate the harmful effect of the public information, we propose to use a …

information aggregation. Despite this, unanimity is frequently used in committees making decisions on behalf of society. This …, unanimity can facilitate truthful communication and optimal information aggregation. Theoretically, we show that since agents … rationale for the widespread use of unanimous voting. …

her own bias. In other words, the expert's cheap talk prevents a voting procedure from aggregating decision makers …

group of people who make a decision by voting on a proposal. An outside expert who observes the qualities of a proposal …