THE VALUE OF CLEANER AIR: AN INTEGRATED APPROACH

Policymakers in the legislative and regulatory arenas face increasing public expectations that authorities will both promulgate and implement strict environmental programs. At the same time, the aggregate cost of such programs is rising and is impacting economic sectors previously untouched. In this context, a major study used an integrated interdisciplinary perspective to determine what economic benefits would result from air pollution controls. Specifically, the study developed estimates for the health benefits of reducing ozone and fine particulate matter concentrations in the nation's most polluted region—the South Coast Air Basin centering on Los Angeles. This paper presents the economic methodologies and results of that study. It also discusses how health and atmospheric sciences informed the economic assessment.     

Generalized Tâtonnement and the Solution of Economic Models*

The theoretical literature on tâtonnement processes leads to the conclusion that convergence is guaranteed only urrder fairly restrictive assumptions. Recently, however, large competitive equilibrium models have been successfully solved using algorithms inspired by tâtonnement processes .
This paper stresses the idea that a model builder has more freedom to set up the process than a theoretician, for whom only one assignment of prices to excess demand is reasonable; for computational purposes, any assignment is acceptable. The diagonal dominance criterion provides guidelines to set up such an assignment. It is used to show that even intractable examples of global instability can easily be solved .     

Monetary Targeting: The International Experience*

This paper examines the experience of nine industrial countries with monetary targeting. The paper suggests that monetary targets were adopted as a tactical response to a particular economic situation, not as monetary rules. Other objectives were given precedence over targets when thought desirable. Most countries changed the targeted aggregate, and two dropped targets altogether. While inflation fell in most countries, the extent to which this was due to the pursuit of monetary targets is unclear. The place of monetary aggregates in many countries now appears to be as one among a number of indicators considered by the authorities in the setting of monetary policy.