We provide a simple necessary and sufficient condition for when a multiproduct demand system can be generated from a discrete choice model with unit demands.

The exchange between Epstein (2010) and Klibanoff et al. (2012) identified a behavioral issue that sharply distinguishes between two classes of models of ambiguity sensitivity, exemplified by the Î±-MEU model and the smooth ambiguity model, respectively. The issue in question is whether a...

This paper characterises the dynamic behaviour of a growing economy where individuals `keep up with the Joneses` and face uninsurable labour income risk. Idiosyncratic uncertainty about future labour income reduces the marginal propensity to consume out of financial wealth and raises the...

This paper characterises the dynamic behaviour of a growing economy where individuals keep up with the Joneses' and face uninsurable labour income risk. Idiosyncratic uncertainty about future labour income reduces the marginal propensity to consume out of financial wealth and raises the...

Economies are so high dimensional and non-constant that many features of models cannot be derived by prior reasoning, intrinsically involving empirical discovery and requiring theory evaluation.  Despite important differences, discovery and evaluation in economics are similar to those of...

Microfounded macromodels (SDGE models) represent the dominant approach in academic macroeconomics, and their influence now extends to the forecasting models of central banks.  These models appear to adopt a clear methodological approach, which promotes internal consistency above external...

Social norms are patterns of behavior that are self-enforcing at the group level: everyone wants to conform when they expect everyone else to conform.  There are multiple mechanisms that sustain social norms, including a desire to coordinate, fear of being sanctioned, signaling membership in...

Using a South African data set, the paper poses six questions about the determinants of subjective well-being. Much of the paper is concerned with the role of relative concepts. We find that comparator income – measured as average income of others in the local residential cluster - enters the...

We axiomatize preferences that can be represented by a monotonic aggregation of subjective expected utilities generated by a utility function and some set of i.i.d. probability measures over a product state space, S1. For such preferences, we define relevant measures, show that they are treated...

This paper investigates the factors that shaped Kenyan's voting intentions in the 2007 presidential election.  Using data from a public opinion survey conducted two weeks before the election we are able to evaluate the relative importance of what shaped voting behavior comprehensively, taking...