Changes in the parameters of an n-dimensional system of equations induce changes in its solutions. For a class of such systems, we determine the qualitative change in solutions given certain qualitative changes in parameters. Our methods and results are elementary yet useful. They highlight the...

We study the behavioral denition of complementary goods: if the price of one good increases, demand for a complementary good must decrease. We obtain its full implications for observable demand behavior (its testable implications), and for the consumer's underlying preferences. We characterize...

I prove the subgame-perfect equivalent of the basic result for Nash equilibria in normal-form games of strategic complements: the set of subgame-perfect equilibria is a non-empty, complete lattice. For this purpose I introduce a device that allows the study of the set of subgame-perfect...

The empirical evidence presented in this paper casts doubts on the by now widely accepted "fact"that the exchange rate based stabilization programs are expansionary. Even though these programs were associated with output booms, no evidence of booms caused both by the stabilization programs is...

This paper formalizes the relation between comparative statics and the out-of-equilibrium explanation for how a system evolves after a change in parameters. The paper has two main results. First, an increase in an exogenous parameter sets o learning dynamics that involve larger values of the...

The empirical evidence presented in this paper casts serious doubts on the by now widely accepted "stylized facts" of the exchange rate based stabilization programs (ERBS) as they are stated in Kiguel and Liviatan (1992) and in Végh (1992). Even though the ERBS programs were associated with...

I characterize games for which there is an order on strategies such that the game has strategic complementarities. I prove that, with some qualications, games with a unique equilibrium have complementarities if and only if Cournot best-response dynamics has no cycles; and that all games with...

Mechanisms for sharing the common tariff revenue in a customs union have received little attention in the literature (Syropoulus, 2003). Comparative analyses show that in past and current customs unions two main mechanisms are been used: generals rules and common funds. In this paper, a new...

El trabajo analiza el proceso de reforma en los servicios públicos a la luz del modelo desarrollado por Spiller y Tomassi (2003). El modelo desataca la incidencia que las instituciones políticas tienen en el proceso político, las que se plasman en ciertas características externas de las...

In this paper we analyze the individual motivation to pay taxes from a novel perspective: the degree of tax morale. We use the Latinobarometro data set of 2005 for countries belonging to the Cono Sur area in Latin America. We estimate, through OLS and ordered probit regressions, the relationship...