This paper analyzes sin goods consumption when individuals exhibit present-focused preferences. It considers three types of present focus: present-bias with varying degrees of naiveté, Gul-Pesendorfer preferences, and a dual-self approach. We investigate the incentives to deviate from healthy...

We consider identification of nonparametric random utility models of multinomial choice using 'micro data,' i.e., observation of the characteristics and choices of individual consumers. Our model of preferences nests random coefficients discrete choice models widely used in practice with...

This paper aims to explain why some consumers may rationally object to free trade. I describe a differentiated-goods economy in which agents differ in their preferences across categories of goods. Due to increasing returns in production the number of goods produced in a given category depends on...