INTEREST GROUPS AND ECONOMIC POLICY: EXPLAINING THE PATTERN OF PROTECTION IN THE BRAZILIAN AGRICULTURAL SECTOR

This article examines the determinants of the pattern of protection across products in the Brazilian agricultural sector from 1969 to 1989. Three key determinants of policy are explored: interest group pressure, government objectives, and structural change associated with economic crisis and a change in political regime. The principal agricultural policies are analyzed, and nominal protection coefficients (NPCs) and producer subsidy equivalents (PSEs) are calculated. When NPCs are used as the dependent variable, econometric results indicate that interest group characteristics such as group size were an important determinant of the pattern of protection. With PSEs, government efforts to raise tax revenues, generate foreign exchange, and control inflation played a more significant role. The results of this paper suggest that future studies of the political economy of protection should pay more attention to the specification of the dependent variable because the conclusions can depend crucially on this choice.     

PRODUCTIVITY AND EFFICIENCY ANALYSIS SOFTWARE: AN EXPLORATORY BIBLIOGRAPHICAL SURVEY OF THE OPTIONS

The software available to implement and carry out efficiency analysis is crucial for the diffusion of efficiency frontier techniques among applied researchers and policy makers. The implementation of up‐to‐date productivity and efficiency analysis is indeed important to advance our knowledge in many fields, ranging from the public and regulated sectors to the private ones. This contribution fills a gap in the existing literature and surveys the currently available options to estimate a variety of frontier methodologies using either general or dedicated programs. We outline directions for future research.     

Intertemporally dependent preferences and the volatility of consumption and wealth

In this article we construct a model in which a consumer's utilitydepends on the consumption history. We describe a general equilibriumframework similar to Cox, Ingersoll, and Ross (1985a). A simpleexample is then solved in closed form in this general equilibriumsetting to rationalize the observed stickiness of the consumptionseries relative to the fluctuations in stock market wealth.The sample paths of consumption generated from this model implylower variability in consumption growth rates compared to thosegenerated by models with separable utility functions. We thenpresent partial equilibrium model similar to Merton (1969, 1971)and extend Merton's results on optimal consumption and portfoliorules to accommodate nonseparability in preferences. Asset pricingimplications of our framework are briefly explored.     

EXACT RELATIONS BETWEEN FOUR DEFINITIONS OF PRODUCTIVITY INDICES AND INDICATORS

Generalizing earlier approximation results, we establish exact relations between the Luenberger productivity indicator and the Malmquist productivity index under rather mild assumptions. Furthermore, we show that similar exact relations can be established between the Luenberger–Hicks–Moorsteen indicator and the Hicks–Moorsteen index.     

A simple approach to interest-rate option pricing

A simple introduction to contingent claim valuation of riskyassets in a discrete time, stochastic interest-rate economyis provided. Taking the term structure of interest rates asexogenous, closed-form solutions are derived for European optionswritten on (i) Treasury bills, (ii) interest-rate forward contracts,(iii) interest-rate futures contracts, (iv) Treasury bonds,(v) interest-rate caps, (vi) stock options, (vii) equity forwardcontracts, (viii) equity futures contracts, (ix) Eurodollarliabilities, and (x) foreign exchange contracts.     

Does North-South horizontal intra-industry trade really exist? An analysis of the toy industry

Does North-South Horizontal Intra-Industry Trade Really Exist? An Analysis of the Toy Industry. — In a combination of a case study approach and econometric analysis, bilateral intra-industry trade between high income countries and low income countries in the toy industry is investigated. In a number of products there is important bilateral intra-industry trade between both groups of countries. Econometric analysis in which a number of the explanatory variables used were quantified on the basis of the information supplied by the industry-spokesmen yields results which strongly support the view that the bilateral IIT between the high income countries and the low income countries in the toy industry is determined significantly by horizontal product differentiation and economies of scale.     

A Luenberger-Hicks-Moorsteen productivity indicator: its relation to the Hicks-Moorsteen productivity index and the Luenberger productivity indicator

Summary. Introducing a new difference-based Luenberger-Hicks-Moorsteen productivity indicator, this contribution establishes theoretically its relations with some existing ratio- and difference-based productivity indexes and indicators. The first main result is an approximation proposition stating that the logarithm of the Hicks-Moorsteen productivity index is about equal to the Luenberger-Hicks-Moorsteen productivity indicator. Secondly, we also establish the specific conditions under which the Luenberger-Hicks-Moorsteen indicator equals the recently introduced Luenberger indicator and compare these to the conditions governing the relations between ratio-based Hicks-Moorsteen and Malmquist indices.Received: 2 May 2002, Revised: 19 May 2003, JEL Classification Numbers: C43, D21, D24.We are grateful for the most constructive remarks of a referee. Obviously, the authors remain solely responsible for any residual shortcomings. Correspondence to: W. Briec     

To Mix or Specialise? A Coordination Productivity Indicator for English and Welsh farms

This paper introduces a nonparametric measure of coordination productivity growth where the subprocesses are explicitly modelled in the production technology. The coordination productivity indicator is decomposed into a coordination technical inefficiency change component and a coordination technical change component. This decomposition allows assessment of reallocation impacts on the different sources of productivity growth. The empirical application focuses on a large panel of English and Welsh farms over the period 2007–2013. The results show that coordination inefficiency significantly increases with the proportion of resources allocated to livestock production in economic and statistical terms. Coordination inefficient farms should generally allocate more land to crop production. Depending on the region, the average coordination productivity growth ranges from ?9.7% to 15.9% per year. It is driven by coordination technical change rather than coordination inefficiency change.     

The Malmquist Productivity Index and Plant Capacity Utilization

A new decomposition of the Malmquist productivity index is proposed to account for changes in plant capacity utilization. Using a primal, non-parametric specification of technology, the Malmquist index is decomposed into technical efficiency change, variations in plant capacity utilization and frontier shifts. It provides an alternative to the available methods of incorporating capacity utilization changes into measures of productivity change. Such measures are based on parametric (and, in many cases, dual) technology specifications; moreover, they typically do not allow for technical inefficiency.
JEL Classification C 61; D 24     

Luenberger and Malmquist Productivity Indices: Theoretical Comparisons and Empirical Illustration

This contribution establishes, from a theoretical viewpoint, the relations between the Malmquist productivity indices, that measure in either input or output orientations, and the Luenberger productivity indices, that can simultaneously contract inputs and expand outputs, but that can also measure in either input or output orientations. The main result is that a Malmquist productivity index overestimates productivity changes, since it provides productivity measures that are nearly twice those given by the Luenberger productivity index looking for simultaneous contractions of inputs and expansions of outputs. This relationship is empirically illustrated using data from 20 OECD countries over the 1974–97 period.