We study the possibility of achieving efficiency in a dynamic adverse selection market for durable goods. The idea is to use the number of times a car has been traded (``vintage'') as a signal of its quality. Higher-valuation consumers experiment with younger vintages. <br> We first exhibit an...

We examine the effect of the number of candidates and the impact of ideology on the efficiency of the electoral process. We show that the tendency to focus on policies that provide particularistic benefits increases with the number of candidates to the expense of policies that benefit the...