This paper compares historical poverty baskets to modern food security and poverty lines.  Changes in the historical baskets and indexing methods are proposed to bring historical studies into better alignment with modern measures as well as with historically based estimates of energy...

The paper compares the standard of living of labourers in the Roman Empire in 301 AD with the standard of living of labourers in Europe and Asia from the middle ages to the industrial revolution. Roman data are drawn from Diocletian`s Price Edict. The real wage of Roman workers was like that of...

Jewish emancipation in nineteenth century Europe produced drastically different responses.  In Germany, a liberal variant known as Reform developed, while ultra-Orthodox Judaism emerged in eastern Europe.  We develop a model of religious organization which explains this polarization.  In...

There has been a dramatic surge in Islamic participation and values since the 1970s.  We propose a theory of the contemporary Islamic revival based upon two forms of relative deprivation - envy and unfulfilled aspirations.  To analyze these motivations, a behavioral model of religion is...

This paper proposes a joint model of tobacco consumption and mortality over the life-cycle. The decision to smoke is a trade off between current utility derived from smoking and a mortality risk increasing with age. Individuals with a longer potential life expectancy have more incentive to cut...

Consider a finite data set where each observation consists of a bunde of contingent consumption chosen by an agent from a constraint set of such bundles.  We develop a general procedure for testing the consistency of this data set with a broad class of models of choice under risk and under...

These are additional notes relating to the paper `The Comparative Statics of Constrained Optimization Problems`, which is appearing in Econometrica. It gathers together material present in various earlier versions of the paper, as well as some new material, which are not found in the published...

This paper gives a non-fixed point theoretic proof of equilibrium existence when the excess demand function of an exchange economy obeys the weak axiom. The proof is simple and geometrically intuitive, and it also permits a weakening of the continuity assumption on the excess demand function....

This paper develops a revealed preference methodology for exploring whether time inconsistencies in household choice are the product of nonstationarities at the individual level or the result of individual heterogeneity and renegotiation within the collective unit.  An empirical application to...

We identify necessary and sufficient conditions under which a finite data set of price vectors and consumption bundles can be rationalized by a weakly separable utility function.  Our result could be understood as a generalization of Afriat's Theorem.