John K.-H. Quah


         Department of Economics          

           Oxford University

           Manor Road, OX1 3UL



I am professor at the Department of Economics, Oxford University.  I am also affiliated to St Hugh’s College, where I am an Official Fellow and its Economics Tutor. 


Every summer, I spend time in Singapore, where I have a visiting professorial position at the Economics Department of the National University of Singapore.  NUS is also where I received my first degree, in Mathematics (Honours Class I, 1986).


I completed my doctoral studies at UC Berkeley (1989—1994), with Robert M Anderson as my doctoral supervisor.  My dissertation was on demand aggregation and its implications for general equilibrium theory.   This research builds on the work of Jean Michel Grandmont (1992), amongst others.   In the first few years after my doctorate, I continued developing my research in this area.   Part of that work is surveyed in an entry in the Palgrave dictionary on the Law of Demand (written jointly with Michael Jerison).  


The bulk of my research in the last few years has been devoted to the theory and applications of monotone comparative statics, building on the work of Milgrom and Shannon (1994) and others.  I have sought to extend the techniques of monotone comparative statics to deal with broader classes of problems in comparative statics, in Bayesian games (like auctions), and in statistical decision theory.  Most of this research has been pursued jointly with Bruno Strulovici; our recent work investigates the aggregative properties of the single crossing condition and the comparative statics of optimal stopping.    I have given survey lectures at various places on this topic; you may find the slides useful.      


I also have a developing interest in the use of revealed preference methods for testing economic models, both models within and outside the usual context of consumer demand.   I recently completed a paper on a revealed preference test for weakly separable preferences.  With Matthew Polisson, I have a note on revealed preference when consumption is discrete.   The Cournot model is one of the canonical models of game theory; Andres Carvajal, Rahul Deb, James Fenske, and I have written a paper that develops revealed preference tests for this model.  


In a more applied context, collaboration with Cameron Hepburn and Robert Ritz has led to a paper on emissions trading schemes. 


I am an associate editor of Economic Theory and the Journal of Mathematical Economics.


20 April 2012