Behavioral implementation studies implementation when agents' choices need not be rational. All existing papers of this literature, however, fail to handle a large class of choice behaviors because they rely on a well-known condition called Unanimity. This condition says, roughly speaking, that...

We study the random assignment of indivisible objects among a set of agents with strict preferences. We show that there exists no mechanism which is unanimous, strategy-proof and envy-free. Weakening the first requirement to q-unanimity – i.e., when every agent ranks a different object at the...

Existing theoretical and experimental studies have established that unanimity is a poor decision rule for promoting information aggregation. Despite this, unanimity is frequently used in committees making decisions on behalf of society. This paper shows that when committee members are exposed to...

We provide an explanation for why committees may behave over-cautiously. A committee of experts makes a decision on a proposed innovation on behalf of 'society'. Each expert's signal about the innovation's quality is generated by the available evidence and the best practices of the experts'...

This paper provides empirical evidence on the aggregation of information in committees. We analyze unique data from the decision-making process of hiring committees within a large private company. In the hiring process, committee members first conduct independent one-to-one interviews and give...