**Recent Working Papers**__(with__

**Rationalizability, Cost-Rationalizability, and Afriat's Efficiency Index**__John K.-H. Quah__),

**2022**. 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).

__:__

*Working Papers*__Bristol 2022__,

__IFS 2022__.

**(with**__Ever Since Allais____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____Bristol 2021__,__IFS 2021__. [Revise and Resubmit,__]__**Journal of Political Economy**

**Older Working Papers**__, 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.__

**A Lattice Test for Additive Separability***:*

__Working Papers____IFS 2018__.

__(with__

**Demand Analysis with Partially Observed Prices**__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__.

**(with**

__Ambiguity Revealed____Ralph-C. Bayer__,

__Subir Bose__, and

__Ludovic Renou__), 2013. Derives and implements revealed preference tests for variational preferences, maxmin expected utility, and subjective expected utility.

*:*

__Working Papers____Adelaide 2013__,

__IFS 2013__,

__Leicester 2012__.