On the Impact of Innovation on the Marginal Abatement Cost Curve

When modeling the effects of innovation on the marginal abatement cost (MAC) curve, many studies in environmental economics have posited, implicitly or explicitly, a uniform downward shift. The purpose of this paper is to thoroughly investigate this claim in a simple theoretical framework by introducing innovation in the production function of a price‐taking, polluting firm in four economically meaningful ways. We establish that the effects of innovation on the MAC curve depend critically on the specific type of innovation, and that only innovation in end‐of‐pipe technology leads to a uniform downward shift of the MAC curve. A second class of results points to the fact that for other types of innovation in the overall production process, the scope for an upward shift of the MAC curve in response to innovation is easier to justify theoretically. These results call for a re‐appraisal of various results in environmental policy obtained in theoretical work relying on this postulate.     

OVERHEAD COST ALLOCATION IN AUSTRALIAN MANUFACTURING COMPANIES

Cost and management accounting practices are being criticised for their deficiencies in providing firms with high-quality information for decisionmaking. While empirical data exist for overseas countries, little information, if any, is available for Australian companies. This paper reports the results of a survey addressed in November 1989 to the 2,000 largest Australian manufacturing companies. A contingency approach (using firm size, diversification, decentralisation, international exposure and industry as contingent variables) is suggested to explain various cost-allocation practices. Responses from 430 firms provided the information used in this study.     

The Optimality of Arbitrary Partial Equilibrium Welfare Analysis

This paper characterizes the general equilibrium foundation of arbitrary partial equilibrium welfare analysis in second‐best economies. While prior theory recognizes the importance of market distortions affected by relative price changes, it offers little guidance about the necessary scope of Marshallian partial equilibrium analysis. The paper determines necessary and sufficient conditions for optima of Marshallian total surplus functions to characterize second‐best Pareto‐optimal allocations. While these conditions confirm much of the traditional approach to applied welfare economics, they bring doubt about its reliability for public policy and concerns over its systematic use to build conventional economic wisdom.     

Financial Development,Credit, and Business Cycles

How does financial development affect the magnitude of the business cycles fluctuations? We examine this question in a general equilibrium model with heterogeneous agents and endogenous credit constraints based on Kiyotaki (1998). We show that there is a hump‐shaped relationship between the degree of financial frictions and the amplification of unexpected productivity shocks. This nonmonotonic relation is due to the fall in financial frictions having two opposite effects on the response of output. One effect is the reallocation of productive inputs between agent types, which, while active, increases with the fall in financial frictions. The other effect is the change in the demand of inputs, which decreases with the fall in financial frictions. At low levels of financial development, the reallocation effect dominates and a fall in financial frictions increases the amplification of productivity shocks. In contrast, at higher levels of financial development, a fall in financial frictions decreases the shock amplification because the reallocation effect disappears while the effect on the demand of inputs is still present.     

A Direct Test of Roll's Conjecture on the Firm Size Effect

Empirical research indicates that small firms earn higher average rates of return than large firms, even after accounting for beta risk. Roll conjectured that the small firm effect might be attributed to improper estimation of security betas. The evidence shows that while the direction of the bias in beta estimation is consistent with Roll's conjecture, the magnitude of the bias appears to be too small to explain the firm size effect.     

Longitudinal rank tests for detecting location shift in the distribution of abnormal returns: An extension*

Abstract. We extend Chandra and Rohrbach (1990) to explain how to develop a longitudinal rank test (r-test) analogous to any t-test used in the event study literature. We compare all analogous pairs using market model residuals. The r-test is more powerful than the t-test in each pair. This suggests that if the researcher intends to use any t-test then, for more power, the comparable test should be preferred. These results should be useful to the researcher in selecting an r-test for event study because now the same flexibility of choosing an r-test as a t-test is available. Résumé. Les auteurs poussent plus loin les travaux de Chandra et Rohrbach (1990) pour expliquer comment mettre au point un test de rangs logitudinaux (test r) analogue aux différents tests t utilisés dans les ouvrages portant sur l'étude d'événements. Ils comparent toutes les paires analogues en utilisant les résiduels des modèles de marché. Le test r est plus puissant que le test t dans chacune des paires, de sorte qu'on peut penser que si le chercheur prévoit utiliser un test t pour sa puissance, il aurait avantage à recourir au test r comparable. Ces résultats devraient être utiles aux chercheurs dans la sélection d'un test r pour l'étude d'événements puisque, dorénavant, le choix d'un test r peut offrir la même souplesse que celui d'un test t     

Irving Fisher and Price‐Level Targeting in Austria: Was Silver the Answer?

The question of price level versus inflation targeting remains controversial. Disagreement concerns not so much the desirability of price stability but rather the means of achieving it. Irving Fisher argued for a commodity dollar standard where the purchasing power of money was fixed by indexing it to a basket of commodities. We show that movements in the price of silver closely track the movements in overall prices during the classical gold standard era. The one‐to‐one relationship between paper and silver bonds suggests that a simple “silver rule” could have sufficed to fix the purchasing power of money.     

THE ECONOMIC EVALUATION OF A JOINT SUPPLY CHAIN INNOVATION

In this paper we discuss the economic evaluation of a supply chain innovation. We look at a situation in which a single manufacturer and a single distributor consider relocating assets and reengineering processes, in order to reduce total assets and total costs in the supply chain. The selling price between the manufacturer and distributor needs to be adjusted to reflect the new costs and asset levels. We investigate the price adjustment needed to maintain the ROA (Return on Assets) of both companies and to yield a nonnegative NPV (Net Present Value) for both companies. We identify conditions under which ROA and NPV yield the same results, such as the absence of implementation costs. We also demonstrate that the minimum price required by the manufacturer may lie above the maximum price acceptable for the distributor. Then the price range is empty and companies will not be able to find a price adjustment that results in a nonnegative NPV and nondecreasing ROAs for both companies.     

Sharing the Cost of a Public Good without Subsidies

We study the construction of a social ordering function for the case of a public good financed by contributions from the population. We extend the analysis of Maniquet and Sprumont (2004) to the case when cost shares cannot be negative, i.e., agents cannot receive subsidies from others. We adapt the Maniquet–Sprumont defense of public good welfare egalitarianism to this context. Weakening their Free Lunch Aversion axiom and adding a continuity requirement allows us to characterize the public good welfare maximin social ordering function.     

Help the Low Skilled or Let the Hardworking Thrive? A Study of Fairness in Optimal Income Taxation

In a model where agents have unequal wages and heterogeneous preferences, we study the optimal redistribution via an income tax, when the social objective is based on a combination of efficiency and fairness principles, and when incentive issues are taken into account. We show how some fairness principles entail specific features for the optimal taxes, such as progressivity or tax exemption for incomes below the minimum wage.