Backward Induction Foundations of the Shapley Value

Ben McQuillin () and Robert Sugden

Econometrica, 2016, vol. 84, 2265-2280

Abstract: We present a noncooperative game model of coalitional bargaining, closely based on that of Gul (1989) but solvable by backward induction. In this game, Gul's condition of “value additivity” does not suffice to ensure the existence of a subgame perfect Nash equilibrium that supports the Shapley value, but a related condition—“no positive value‐externalities”—does. Multiple equilibria can arise only in the event of ties, and with a mild restriction on tie‐break rules these equilibria all support the Shapley value.

Date: 2016
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