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Structural Rationality in Dynamic Games

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  • Marciano Siniscalchi

Abstract

The analysis of dynamic games hinges on assumptions about players' actions and beliefs at information sets that are not expected to be reached during game play. Under the standard notion of sequential rationality, these assumptions cannot be tested on the basis of observed, on‐path behavior. This paper introduces a novel optimality criterion, structural rationality, which addresses this concern. In any dynamic game, structural rationality implies weak sequential rationality (Reny (1992)). If players are structurally rational, assumptions about on‐path and off‐path beliefs concerning off‐path actions can be tested via suitable “side bets.” Structural rationality also provides a theoretical rationale for the use of a novel version of the strategy method (Selten (1967)) in experiments.

Suggested Citation

  • Marciano Siniscalchi, 2022. "Structural Rationality in Dynamic Games," Econometrica, Econometric Society, vol. 90(5), pages 2437-2469, September.
    • Handle: RePEc:wly:emetrp:v:90:y:2022:i:5:p:2437-2469
    DOI: 10.3982/ECTA16666
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