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A note on: Jury size and the free rider problem

Bag, P, Levine, P and Spencer, C (2006) A note on: Jury size and the free rider problem .

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This note reassesses the basic result in Mukhopadhaya (2003) that, when jurors may acquire costly signals about a defendant's guilt, with a larger jury size the probability of reaching a correct verdict may in fact fall, contrary to the Condorcet Jury Theorem. We show that if the jurors coordinate on any one of a number of (equally plausible) asymmetric equilibria other than the symmetric equilibrium considered by Mukhopadhaya, the probability of accuracy reaches a maximum for a particular jury size and remains unchanged with larger juries, thus mitigating Mukhopadhaya's result somewhat. However, the case for limiting the jury size-a recommendation by Mukhopadhaya-gains additional grounds if one shifts the focus from maximizing the probability of reaching a correct verdict to the maximization of the overall social surplus, measured by the expected benefits of jury decisions less the expected costs of acquiring signals.

Item Type: Other
Divisions : Surrey research (other units)
Authors :
Bag, P
Spencer, C
Date : 1 December 2006
Depositing User : Symplectic Elements
Date Deposited : 16 May 2017 15:14
Last Modified : 23 Jan 2020 10:25

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