Assistant Professor of Economics


Mailing Address

MSC 1133-124-05
1 Brookings Drive
St. Louis, MO  63130

Office Phone



Research Interests:

Economic Theory
Decision Theory
Behavioral Economics


Random Evolving Lotteries and Intrinsic Preference for Information, with Faruk Gul and Wolfgang Pesendorfer.
Econometrica, Vol. 89, No. 5 (September, 2021), 2225–2259.

Random Choice and Learning.
Journal of Political Economy, Vol. 127, No. 1, (February, 2019), 419–457.

Subjective Ambiguity and Preference for Flexibility, with Leandro Gorno.
Journal of Economic Behavior & Organization, Vol. 154, (October, 2018), 24–32.

Random Choice as Behavioral Optimization, with Faruk Gul and Wolfgang Pesendorfer.
Econometrica, Vol. 82, No. 5 (September, 2014), 1873–1912.

Working Papers

Moderate Utility

With Junnan He.

Hotelling’s and Salop’s spatial competition models as well as nested logit, covariance probit, elimination-by-aspects, and several other well-known discrete choice models belong to the class of moderate utility models, where binary choices are a function of the ratio between utility difference and a product differentiation index satisfying the properties of a distance metric. We provide a behavioral foundation for this class of models. Our main result establishes that moderate utility has a single, directly testable implication: choice probabilities are moderately transitive. We use our characterization to show how the model achieves a useful compromise between explanatory power and predictive power.

  • Working paper (PDF) updated December 2022.
  • Conditionally accepted at the American Economic Review: Insights.

The Thrill of Gradual Learning

With Faruk Gul, Erkut Ozbay, and Wolfgang Pesendorfer.

We report on an experiment that shows subjects prefer a gradual resolution of uncertainty when information about winning yields decisive bad news but inconclusive good news. This behavior is difficult to reconcile with existing theories of choice under uncertainty, including the Kreps-Porteus model. We show how the behavioral patterns uncovered by our experiment can be understood as arising from subjects’ special emphasis on their best (peak) and worst (trough) experiences along the realized path of uncertainty.

Preference Reversal or Limited Sampling? Maybe túngara frogs are rational after all.

Lea and Ryan (Science, Reports, 28 August 2015, p. 964) interpret mate choice data collected from frogs in the laboratory as being incompatible with rational choice models currently used in sexual selection theory. A close look at their data supports the hypothesis that some options offered in the lab are easier to compare than others. If we take into account that some pairs of options are easier to compare, and that frogs operate under conditions of uncertainty, we can restore rationality to túngara frogs.

Work in Progress

Random Choice and Differentiation

With Junnan He.

Measuring product differentiation and substitutability is a key concern in the analysis of consumer demand. We develop and analyze a general yet tractable model of random choice with product differentiation in a multi-attribute setting. We show the analyst can separately identify vertical and horizontal product differentiation from binary comparison data alone. We characterize the binary choice rules that arise from our model using four easily understood axioms. In multinomial choice, we show the intersection of our model with the classic random utility framework yields random coefficients with an elliptical distribution. We provide applications to consumer demand and choice under risk.