Order-k rationality

Salvador Barberà, Geoffroy de Clippel, Alejandro Neme, Kareen Rozen*

*Autor correspondiente de este trabajo

Producción científica: Contribución a una revistaArtículoInvestigaciónrevisión exhaustiva

2 Citas (Scopus)
1 Descargas (Pure)


A decision maker (DM) may not perfectly maximize her preference over the feasible set. She may feel it is good enough to maximize her preference over a sufficiently large consideration set; or just require that her choice is sufficiently well-ranked (e.g., in the top quintile of options); or even endogenously determine a threshold for what is good enough, based on an initial sampling of the options. Heuristics such as these are all encompassed by a common theory of order-k rationality, which relaxes perfect optimization by only requiring choices from a set S to fall within the set’s top k(S) elements according to the DM’s preference ordering. Heuristics aside, this departure from rationality offers a natural way, in the classic ‘as if’ tradition, to gradually accommodate more choice patterns as k increases. We characterize the empirical content of order-k rationality (and related theories), and provide a tractable testing method which is comparable to the method of checking SARP.

Idioma originalInglés
Páginas (desde-hasta)1135-1153
Número de páginas19
PublicaciónEconomic Theory
Fecha en línea anticipada1 mar 2021
EstadoPublicada - 2022


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