Abstract
We study the implementation of social choice rules in incomplete information environments. A sufficiency condition calledposterior reversalis given for extensive form implementation. The condition has a natural interpretation in signaling terms: Consistent posterior distributions under truth-telling are different from consistent posteriors under deception. This variation in the distribution over player types leads to variation in the distribution over actions and outcomes (comparing truth-telling and deception). We exploit this feature to implement social choice rules.Journal of Economic LiteratureClassification Numbers: D78, D82.
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