Linear programming-based estimators in simple linear regression

In this paper we introduce a linear programming estimator (LPE) for the slope parameter in a constrained linear regression model with a single regressor. The LPE is interesting because it can be superconsistent in the presence of an endogenous regressor and, hence, preferable to the ordinary least squares estimator (LSE). Two different cases are considered as we investigate the statistical properties of the LPE. In the first case, the regressor is assumed to be fixed in repeated samples. In the second, the regressor is stochastic and potentially endogenous. For both cases the strong consistency and exact finite-sample distribution of the LPE is established. Conditions under which the LPE is consistent in the presence of serially correlated, heteroskedastic errors are also given. Finally, we describe how the LPE can be extended to the case with multiple regressors and conjecture that the extended estimator is consistent under conditions analogous to the ones given herein. Finite-sample properties of the LPE and extended LPE in comparison to the LSE and instrumental variable estimator (IVE) are investigated in a simulation study. One advantage of the LPE is that it does not require an instrument.     

Ethical Standards in Advertising: A Worldwide Perspective

An empirical study indicates how close advertisers from all the continents have been from the natural law and other fundamental moral principles. In their professional activities, many advertisers assumed the philosophical relativism as the framework for fundamental concepts. The ethical problems have not been equated with objectivity and the realist approach is appointed as a solution.     

Regional Integration and Lobbying for Tariffs Against Nonmembers

We study the impact of regional trading arrangements (RIAs) on tariff policy toward nonmembers in a three-good, three-country political economy model. Comparing free-trade areas (FTAs) with and without rules of origin and customs unions (CUs) with varying degrees of economic and political integration, we show how increasingly deep integration can lead to rising protection against nonmember imports. Other differences between FTAs and CUs, like the extent of free-riding in a CU and any component of a CU's tariff designed to improve the members' terms of trade, are not explicitly accounted for. Nevertheless, the results suggest that FTAs are likely to welfare dominate CUs.     

Nonlinear Dynamics in Expectations: An Empirical Study

The paper investigates whether expectations data are consistent with nonlinear dynamics possibly involving deterministic chaos. Survey data on exchange rate expectations for four different currencies over one‐week and one‐month prediction horizons are considered. The evidence indicates that one cannot neglect the possibility of nonlinear dynamics underlying the erratic behaviour of expectation data, even though the evidence in that respect is not overwhelming.     

Harmonizing External Quotas in an FTA: A Step Backward?

This paper explores how political–economy forces shape quantitative barriers against the rest of the world in an FTA. We show that whereas the dilution of lobbying power in an FTA typically leads to a relaxation of external quotas, this result is likely to be overturned as integration deepens. In particular, we show that cooperation among member countries on the level of their external quotas, cross–border lobbying by import–competing interests in the free–trade area, and the consolidation of national external quotas into a single one, all lead to stiffer restrictions against imports from the rest of the world. We also show that, unlike tariffs, endogenous quotas are not crucially affected by the presence of rules of origin.     

Testing the Taylor Model Predictability for Exchange Rates in Latin America

Exchange rates forecasting performance is tested by a model which incorporates endogenous monetary policy through a Taylor rule reaction function. Other usual monetary and equilibrium empirical exchange rate models are also evaluated for comparison purposes. Predictability is tested by comparing the models to a benchmark random walk specification. We contribute to the recent literature in many ways. First, we include models of forward-looking endogenous monetary policy to the exchange rate forecasting exercise, the Taylor model. Second, our data, set across countries, is uniform in terms of economies adopting both inflation targeting and a flexible exchange rate. Third, our study sheds light on exchange rate determinants for emerging economies: Brazil, Chile, Colombia, Peru and Mexico. Our results show strong predictability evidence for the Taylor model and indicate that assuming models of endogenous monetary policy and the present value of expected fundamentals is a rewarding strategy to model exchange rate determination.     

International trade and factor productivity as determinants of the real effective exchange rate

Using panel time-series models that deal with the problems of potential endogeneity and cross-sectional dependence, while also allowing for cross-country heterogeneity in the parameters of interest, we demonstrate that trade openness produces a depreciation of the real effective exchange rate.     

The International Transmission of Tax Policies In A Dynamic World Economy*

The international transmission of tax shocks are analyzed in a two-country infinite-horizon representative agent framework. the viability of the tax regimes, arising from the arbitrage conditions characterizing equilibrium in a perfect world capital market, is emphasized. Conditions for both short-run and long-run viability are derived, and the two polar regimes of source-based and residence-based taxation are discussed. In general, the former is found more likely to satisfy the viability conditions than the latter. With equity financing, the long-run viability of residence-based taxation is likely to require the harmonization of tax and/or dividend policy. the main features of the dynamic adjustment paths following a tax increase are characterized.     

Lobbying, Counterlobbying, and the Structure of Tariff Protection in Poor and Rich Countries

A political economy model of protection is used to determineendogenously the intersectoral patterns of protection. Threepropositions are derived that are consistent with the stylizedpatterns of tariff protection in rich and poor countries: Nominalprotection rates escalate with the degree of processing, protectionis higher on average in poor countries, and rich countries protectagriculture relatively more than they protect manufacturing,whereas poor countries do the reverse. Numerical simulationsfor archetypal rich and poor economies confirm that the endogenouslydetermined structure of protection is broadly consistent withobserved patterns of protection.     

Agricultural Tariffs or Subsidies: Which Are More Important for Developing Economies?

This article assesses the impact of the world price–depressingeffect of agricultural subsidies and border protection in OECDcountries on developing economies' exports, imports, and welfare.Developing economy exporters are likely to benefit from reductionsin such subsidies and trade barriers, whereas net importersmay lose as world prices rise. A simple partial equilibriummodel of global trade in commodities that benefit from domesticsupport or export subsidies is developed to estimate the relevantelasticities. Simulation results suggest that a 50 percent reductionin border protection will have a much larger positive impacton developing economies' exports and welfare than a 50 percentreduction in agricultural subsidies. Although there is significantheterogeneity across developing economies, the results suggestthat efforts in the Doha Round of negotiations should be directed at substantially reducing border protection.