Recent Working Papers
Rationalizability, Cost-Rationalizability, and Afriat's Efficiency Index (with John K.-H. Quah), 2021. Establishes a definitional equivalence between rationalizability and cost-rationalizability under mild conditions, as well as an observational equivalence within the context of finite data, furnishing support for a natural interpretation of Afriat's (1973) critical cost efficiency index (CCEI).
Ever Since Allais (with Aluma Dembo, Shachar Kariv, and John K.-H. Quah), 2021. Reports an experiment that nonparametrically tests the entire set of axioms on which expected utility theory (EUT) is based, and finds that within-subjects departures from independence are minor relative to departures from ordering (completeness and transitivity) and/or monotonicity with respect to first-order stochastic dominance (FOSD). Working Papers: IFS 2021, Bristol 2021.
Testing Axioms of Revealed Preference in Stata (with Marcos Demetry and Per Hjertstrand), 2020. Introduces the Stata commands checkax, aei, and powerps as a bundle within the package rpaxioms, in order to empirically test a number of revealed preference axioms, including GARP, SARP, and WARP. Working Paper: IFN 2020.
Older Working Papers
A Lattice Test for Additive Separability, 2018. Establishes necessary and sufficient conditions for a finite data set of price and demand observations to be consistent with an additively separable preference, with an empirical application to panel data on food purchases. Working Papers: IFS 2018, St Andrews 2018.
Demand Analysis with Partially Observed Prices (with Ian Crawford), 2016. Demonstrates that demand analysis remains feasible in the presence of partially observed prices, even while agnostic about the nature of missing prices. Working Papers: Leicester 2016, IFS 2015.