Recent Working Papers
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 Papers: IFN 2020.
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. Slides: Additive Separability.
Older Working Papers
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.