Preference erosion and the developing countries exports to the EU: a dynamic panel gravity approach

The erosion of preferences due to multilateral tariff reductions is a long-standing concern for many developing countries. This paper focuses on the erosion of the preferences granted by the EU in the rice industry. Since 2004 there has been a sharp decrease in border protection for the EU rice industry. Because the EU grants trade preferences to a considerable number of rice exporting developing countries, the reform implied preference erosion as well. By addressing the impact of preference erosion on developing countries rice exports to the EU, this paper contributes two original insights to the literature: first, by proposing a new empirical approach to compute the preference margin when tariff rate quotas are in force which is based on the assumption of the existence of fixed costs and economies of scale in international trade; second, by estimating the trade elasticities of preferences by means of a dynamic panel gravity equation to deal with the issues of endogeneity of preferences and persistency in bilateral trade flows. The results show that the way preference margins are calculated matters significantly when assessing the existence and extent of their erosion and the values of trade elasticities. Finally, the estimations highlight the fact that the impact of preferences is still very strong for some of the countries concerned.     

Public service motivation and public sector employment preference: Comparing Italian and British students

ABSTRACT

Previous research has suggested that an individual’s public service motivation (PSM) is positively linked to a preference for public sector employment. The authors explore this link using a sample of British and Italian undergraduate students. They found a positive relationship between PSM and public sector job preferences among Italian students but not with the British students. The UK has implemented more NPM-style reforms than Italy and this could be impacting on public sector recruitment. Implications for recruitment and retention the public sector are discussed.     

Bootstrap refinements for QML estimators of the GARCH(1,1) parameters

This paper reconsiders a block bootstrap procedure for Quasi Maximum Likelihood estimation of GARCH models, based on the resampling of the likelihood function, as proposed by Gonçalves and White [2004. Maximum likelihood and the bootstrap for nonlinear dynamic models. Journal of Econometrics 119, 199–219]. First, we provide necessary conditions and sufficient conditions, in terms of moments of the innovation process, for the existence of the Edgeworth expansion of the GARCH(1,1) estimator, up to the k$k$-th term. Second, we provide sufficient conditions for higher order refinements for equally tailed and symmetric test statistics. In particular, the bootstrap estimator based on resampling the likelihood has the same higher order improvements in terms of error in the rejection probabilities as those in Andrews [2002. Higher-order improvements of a computationally attractive k$k$-step bootstrap for extremum estimators. Econometrica 70, 119–162].     

A model for R&D performance measurement

R&D activities are increasingly costly and risky and, as a consequence, measuring their performance and contribution to value becomes critical. This paper illustrates a formal model for measuring R&D performance, based upon a balanced and synthetic evaluation of quantitative indicators from five different perspectives of performance: financial, customer, innovation and learning, internal business, alliances, and networks. The model is built in coherence with the suggestions coming from the theory of measurement in soft systems, which gives relevant guidelines for ensuring validity, objectivity and inter-subjectivity of the model. Then, an application in a real R&D setting is described, which helps to understand the model and to enlighten its main advantages and limits.     

Postmodern Corporate Finance

One of the core tenets of modern finance theory is that corporations create value by producing operating rates of return on capital that are greater than the cost of capital. “Postmodern” corporate finance, while reaffirming the importance of earning an adequate return on capital, also attempts to restore at least part of the traditional corporate emphasis on top-line growth that prevailed before the intense focus on returns by modern shareholder value advocates. One important reason for the heightened emphasis on growth in addition to returns is that most rate-of-return measures used by companies and investors are based on conservative accounting practices that make old assets look more profitable than new ones, thereby discouraging investments in growth. This article introduces a new return measure called “Gross Business Return” that, when evaluated against a Required Return framework that reflects the level of current stock prices, has a stronger correlation with how companies are valued by the stock market. Moreover, in reviewing historical returns over time for both the market and specific industries, the author's research suggests that the market appears to demand considerably lower current returns than those implied by traditional weighted average cost of capital (WACC) approaches. And to the extent corporate executives rely on WACC, they could be passing up valuable growth opportunities. To help evaluate tradeoffs between growth and return, the author introduces a cash-based measure of corporate economic profit called Residual Cash Earnings. Unlike most traditional return and economic profit measures, Residual Cash Earnings, when expressed as a percentage of sales, provides a way for corporate managers to identify growth opportunities that, while producing current returns lower than WACC, are likely to add value over a multi-year time horizon. These new measures and analytical tools are suitable for strategic planning, budgeting, resource allocation, performance measurement, and rewards. Consistent application of these principles across these management processes provides a framework for constantly rebalancing the emphasis on growth and return to adapt to changes in the economy, industry, and competitive landscape.     

Riding the yield curve: a spanning analysis

The average return on long-term bonds exceeds the return on short-term bills by a large amount over short investment horizons. A riding-the-yield-curve investment strategy takes advantage of the higher returns on longer term bonds. This strategy involves the purchase of bonds with maturities longer than the investment horizon and the sale of these bonds, before they mature, at the end of the investment horizon. Most of the literature that evaluates this strategy compares only ex post average returns or Sharpe ratios. In this paper, we use spanning tests to provide formal statistical evidence on the benefits of investing in long bonds when the investment horizon is short. The results for both the United States and Canada indicate that an investor with a short horizon is better off investing in short-term debt instruments than long-term bonds.     

Mean–variance dominant trading strategies

The paper examines the relative importance of ten anomaly-based trading strategies. We employ Mean Variance spanning methodologies in a classical unconditional setting and a novel conditional setting. Fixed-weight optimal portfolios stemming from the unconditional methodology indicate that all the strategies are needed to enhance the mean–variance tradeoff. This conclusion is completely reversed when we allow for time-varying portfolio weights as a nonlinear function of lagged economic indicators. The overall results suggest that diversified anomaly-based holdings are of limited benefit to sophisticated investors who employ dynamic trading strategies.     

Assessing Macroprudential Policies: Case of South Korea*

In this paper, we develop methods for assessing the sensitivity of capital flows to global financial conditions. We use these methods to assess the impact of macroprudential policies introduced by South Korea in 2010. Relative to a comparison group of countries, we find that the sensitivity of capital flows into South Korea to global conditions decreased in the period following the introduction of macroprudential policies.