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Iorio, Karl
Manelli, Alejandro M.
Year of Publication: 
Series/Report no.: 
Discussion Paper 1074
Signaling games with infinite action spaces may have no sequential equilibrium. We prove that adding cheap talk to these games solves the non-existence problem; the sequential equilibrium outcome correspondence is upper hemi-continuous. In addition, when the signaling space has sufficiently many signals, any cheap talk sequential equilibrium outcome can be appproximated by a sequential (e)-equilibrium of the game without cheap talk. In these cases, adding cheap talk does not fundamentally alter the nature of the game.
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Working Paper

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