This paper introduces a new and computationally inexpensive method to test for uniqueness of equilibrium in exchange economies. ( 1999 Published by Elsevier Science B.V. All rights reserved. JEL classixcation: C63; C68; D58

Without policy reforms, the aging of the U.S. population is likely to increase the burden of the currently unfunded Social Security and Medicare systems. In this paper we build an applied general equilibrium model and incorporate the population projections made by the Social Security Administration (SSA) to evaluate the macroeconomic and welfare implications of alternative fiscal responses to t...

In this paper, we consider the competition of providers of information products against P2P networks that offer illegal versions of the information products. Depending on the generic cost factor of downloading—incorporating factors including, among other things, the degree of legal enforcement of intellectual property rights—we find that the firm may employ pricing strategies to either deter th...

Retail Clinics are a recent and growing health care delivery organization offering low cost, convenient access to the simple treatment of low acuity conditions. We examine the impact of retail clinics on cost and utilization using a comprehensive health insurance administrative database representing millions of American insured consumers. We address the potential endogeneity of retail clinic ut...

We examine South’s incentive to protect IPR in a North-South duopoly model where (i) the North firm owns a better technology and has the option of serving the South market via exports or FDI, and (ii) the South firm can invest in absorptive capacity to reduce the technology gap. While FDI by North firm makes absorption easier for South, investment in absorptive capacity by the South firm might ...

In a market with one safe and one risky asset, an investor with a long horizon, constant investment opportunities, and constant relative risk aversion trades with small proportional transaction costs. We derive explicit formulas for the optimal investment policy, its implied welfare, liquidity premium, and trading volume. At the first order, the liquidity premium equals the spread, times share ...

This paper analyzes competitive pricing policies by multiproduct firms facing heterogeneous buying patterns. We show that cross-subsidization arises when firms have comparative advantages on different products but are equally efficient overall: Firms earn a profit from multi-stop shoppers by charging positive margins on their strong products but, as price competition for one-stop shoppers drive...

Capitalizing on the most recent worldwide estimates of the impacts of climate change on agricultural production, this paper assesses the economic effects of climate change for Southeast Asian countries through 2080. The results suggest that the aggregate impacts of agricultural damages caused by climate change on the global economy are moderate. However, the uneven distribution of productivity ...

A life-cycle model with equilibrium default in which consumers with and without temptation coexist is constructed to evaluate the 2005 bankruptcy law reform and other counterfactual reforms. The calibrated model indicates that the 2005 bankruptcy reform achieves its goal of reducing the number of bankruptcy filings, as seen in the data, but at the cost of loss in social welfare. The creditor-fr...

A life-cycle model with equilibrium default in which consumers with and without temptation coexist is constructed to evaluate the 2005 bankruptcy law reform and other counterfactual reforms. The calibrated model indicates that the 2005 bankruptcy reform achieves its goal of reducing the number of bankruptcy filings, as seen in the data, but at the cost of loss in social welfare. The creditor-fr...