Market Power and/or Efficiency: A Structural Approach

This article separates oligopoly-power and cost-efficiency effects ofchanges in industrial concentration and assesses their impact on output prices in 32 food-processing industries. Empirical results indicate that although concentration inducescost efficiency in one-third of the industries, oligopoly-power effects either dominate cost efficiencyor reinforce inefficiency, resulting in higher output prices in most industries. The articlealso provides fresh econometric estimates of oligopoly power and economies of size for the industriesin question.     

Investment under Uncertainty, Debt and Taxes

It is common practice in financial derivative valuation to use a discount factor based on the riskless debt rate. But, to what extent is this discount factor appropriate for cash flows emerging in capital budgeting? To answer this question, we introduce a framework for real asset valuation that considers both personal and corporate taxation. We first discuss broad circumstances under which personal taxes do not affect valuation. We show that the appropriate discount rate for equity‐financed flows in a risk‐neutral setting is an equity rate that differs from the riskless debt rate by a tax wedge due to the presence of personal taxation. We extend this result to the valuation of the interest tax shield for exogenous debt policy with default risk. Interest tax shields, which accrue at a net rate corresponding to the difference between the corporate tax rate and a tax rate related to the personal tax rates, can have either positive or negative values. We also provide an illustrative real options application of our valuation approach to the case of an option to delay investment in a project, showing that the application of Black and Scholes formula may be incorrect in presence of personal taxes.     

International monetary policy coordination under asymmetric shocks

This paper analyzes whether international monetary policy coordination is the best response to economic interdependence. The paper develops a macroeconomic model in which countries show different preferences regarding objectives when faced with asymmetric disturbances and analyzes in strategic terms how monetary policy can deal with real, monetary, and supply-side shocks. It further shows how the desirability of monetary policy coordination depends on the presence of asymmetric shocks and also on the nature of disturbances, the channel of transmission, and the asymmetry of preferences. Finally, the paper derives the conditions under which monetary policy coordination proves to be desirable.     

Decision theories and probabilistic insurance: an experimental test

This paper reports the results of an experiment in which probabilistic insurance, as proposed by Kahneman and Tversky (1979), is compared both with full insurance and no insurance. The experimental results conform to the intuitive prediction that risk-averse agents who are indifferent between full insurance and no insurance, will prefer full insurance to probabilistic insurance and probabilistic insurance to no insurance. The first conclusion is incompatible with the predictions of expected utility theory, and the second with Kahneman and Tversky's prospect theory. We also show that Loomes and Sudgen's regret theory can easily accommodate these intuitive results. JEL Classification: C91, D81. We are most grateful to Graham Loomes and two anonymous referees for their very helpful comments. Financial support from the Ministerio de Ciencia y Tecnología, under project BEC2001-0535, and from the Generalitat Valenciana under project GRUPOS03/086, is gratefully acknowledeged.     

Bankruptcy games and the Ibn Ezra’s proposal

Summary. This paper explores an old solution for bankruptcy problems, described by Ibn Ezra in the XII century. Particularly, we introduce a new way of extending the Ibn Ezras proposal, the Generalized Ibn Ezra solution, by imposing that the general distribution principle from which it is inspired remains fixed. In this context, we follow the interpretation of bankruptcy problems in terms of TU games given in ONeill (1982), and propose the analysis of the Transition Game associated to bankruptcy problems to provide a characterization for the Generalized Ibn Ezra solution.Received: 14 October 2003, Revised: 26 May 2004, JEL Classification Numbers: C71, D63, D71. Correspondence to: José Alcalde: alasur@merlin.fae.ua.esWe are grateful to Carmen Herrero, Juan de Dios Moreno, William Thomson and an anonymous referee for helpful comments. Authors work is partially supported by the Institut Valenciá dInvestigacions Económiques. Alcalde and Silva acknowledge support by FEDER and the Spanish Ministerio de Educación y Cultura under project BEC 2001-0535. Marco acknowledges support by the Fundación Séneca, and the Spanish Ministerio de Educación y Cultura under projects SEC2000-0838 and BEC 2001-0781.     

Self-Selection Consistent Functions

This paper studies collective choice rules whose outcomes consist of a collection of simultaneous decisions, each one of which is the only concern of some group of individuals in society. The need for such rules arises in different contexts, including the establishment of jurisdictions, the location of multiple public facilities, or the election of representative committees. We define a notion of allocation consistency requiring that each partial aspect of the global decision taken by society as a whole should be ratified by the group of agents who are directly concerned with this particular aspect. We investigate the possibility of designing efficient allocation consistent rules. We also explore whether such rules may in addition respect the Condorcet criterion. Journal of Economic Literature Classification Numbers: D7, D71.     

Linder Revisited: Trade and Development in the Spanish Economy

The literature has tended to treat Linder’s hypothesis with excessive simplicity given the absence of any formalization for this intuitive theory on trade potential in manufacturers, closely related to the intra‐industry trade paradigm. Against this background, in this paper we first propose a complete empirical model of bilateral trade containing all the determinants suggested by Linder, with special emphasis being placed on non‐homothetic preferences, national income distribution, international economic convergence and geographic distance. We then test the model in an appropriate case, namely that of Spain during the period of its economic transition running from approximately 1959 to 1986. This period was characterized by increasing openness and structural change, as well as by convergence until that country’s integration into the then European Economic Community. The results confirm the importance of the characteristics of internal demand, essentially of income distribution and non‐homothetic preferences. We find that trade horizons delimited by bilateral proximity in development and geographical distance, together with multilateral convergence in economic development are the main indicators for selecting trade partners as markets and suppliers, thereby reinforcing the idea that foreign markets can be considered as an extension of the national market.     

Using Additional Information in Structural Decomposition Analysis: The Path-based Approach

Structural decomposition analysis (SDA) is a well-known methodology to assess the relative importance of effects that together constitute the actual change in a variable of interest. A widely recognized problem of SDA is that the results often depend strongly on the specific decomposition formula chosen, while numerous formulae are equivalent from a theoretical point of view. This ‘non-uniqueness’ problem is often solved rather pragmatically, by reporting an average over (a subset of) all possible formulae. In this paper, we propose an approach that uses maximum entropy econometrics techniques to select a specific decomposition formula if additional information on one or more (but not all) determinants is available. We illustrate the method empirically by investigating the sources of change in real labour costs by industry in Spain, 1980–1994.