Dynamic Random Utility
Dynamic Random Utility
复制标题
动态随机效用
作者:
Mira Frick;Ryota Iijima;Tomasz Strzalecki
We provide an axiomatic analysis of dynamic random utility, characterizing the stochastic choice behavior of agents who solve dynamic decision problems by maximizing some stochastic process (
U
t
) of utilities. We show first that even when (
U
t
) is arbitrary, dynamic random utility imposes new testable
across‐period restrictions on behavior, over and above period‐by‐period analogs of the static random utility axioms. An important feature of dynamic random utility is that behavior may appear
history‐dependent, because period‐
t choices reveal information about
U
t
, which may be serially correlated; however, our key new axioms highlight that the model entails specific limits on the form of history dependence that can arise. Second, we show that imposing natural Bayesian rationality axioms restricts the form of randomness that (
U
t
) can display. By contrast, a specification of utility shocks that is widely used in empirical work violates these restrictions, leading to behavior that may display a negative option value and can produce biased parameter estimates. Finally, dynamic stochastic choice data allow us to characterize important special cases of random utility—in particular, learning and taste persistence—that on static domains are indistinguishable from the general model.
影响因子:
6.1
作者:
Abdulkadiroğlu, Atila;Angrist, Joshua D.;Narita, Yusuke;Pathak, Parag A.
通讯作者:
Pathak, Parag A.
DOI:
10.3982/ecta14478
发表时间:
2018
期刊:
arXiv: Statistics Theory
影响因子:
--
作者:
Y. Kitamura;J. Stoye
通讯作者:
J. Stoye