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Publicado en: Documento de trabajo

Optimal object assignment mechanisms with imperfect type verification

; Juan Pereyra

Documento de Trabajo IE-PUC, N° 540, 2019.

Abstract: There are objects of different quality to be assigned to agents. Agents can be assigned at most one object and there are not enough high quality objects for every agent. The social planner is unable to use transfers to give incentives for agents to convey their private information; instead, she is able to imperfectly verify their reports. We characterize a mechanism that maximizes welfare, where agents face different lotteries over the various objects, depending on their report. We then apply our main result to the case of college admissions. We find that optimal mechanisms are, in general, ex-post inefficient and do strictly better than the standard mechanisms that are typically studied in the matching literature.

JEL classification: C7, D8.
Keywords: imperfect verification, evidence, mechanism design.


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