Conditional beta pricing models: A nonparametric approach

We propose a two-stage procedure to estimate conditional beta pricing models that allows for flexibility in the dynamics of asset betas and market prices of risk (MPR). First, conditional betas are estimated nonparametrically for each asset and period using the time-series of previous data. Then, time-varying MPR are estimated from the cross-section of returns and betas. We prove the consistency and asymptotic normality of the estimators. We also perform Monte Carlo simulations for the conditional version of the three-factor model of Fama and French (1993) and show that nonparametrically estimated betas outperform rolling betas under different specifications of beta dynamics. Using return data on the 25 size and book-to-market sorted portfolios, we find that the nonparametric procedure produces a better fit of the three-factor model to the data, less biased estimates of MPR and lower pricing errors than the Fama–MacBeth procedure with betas estimated under several alternative parametric specifications.     

The economic return on education for hotel managers

This paper estimates econometrically the economic return on education among Portuguese hotels managers, based on a survey carried out in 2003. A Mincerian human capital model is estimated. The main findings indicate that the rate of return is in the range 12–15%, signifying that Portuguese hotel managers are better paid than the average population. The results also indicate that in this sector, the return on education does not depend on the number of employees in the hotels in which the individual works, nor on the region where the hotel is situated. Gender has an impact in this labour market. Being a foreign manager has a positive impact on earnings, as is also the case for partners in the hotel company. The research draws the attention of hotel managers to the need to acquire human capital to enable them to perform their tasks effectively in a globalised world. Copyright © 2007 John Wiley & Sons, Ltd.     

Firm Shutdown During the Financial and the Sovereign Debt Crises: Empirical Evidence from Portugal

This paper examines Portuguese firms’ survival over the business cycle and investigates whether the effect of firm size varies across the phases of the cycle and with the type of shock associated with periods of economic contraction. Our results show that smaller firms are more likely to shut down than larger firms. Within each size band, however, we found that during the two crises examined, micro firms experienced hazards of closing (relative to large firms) at least similar to those observed in the pre-crisis period, while medium-sized firms were found to have been more vulnerable during the financial crisis period but showed more resilience during the sovereign debt crisis. The results suggest that during the sovereign debt crisis, firms faced a higher probability of closing than they did during the financial crisis.     

Trade Liberalisation and Economic Performance: Theory and Evidence for Developing Countries

The last five decades have witnessed a profound evolution of economic policy in developing countries, particularly in the case of trade strategies. Both internal, as well as external, factors have prompted the need for more outward‐oriented (or liberalised) trade policy regimes. The creation of the General Agreement on Tariffs and Trade (GATT) in 1947 and the World Trade Organisation (WTO) in 1995 have been important driving forces for free trade. Since then, the major quantitative barriers to trade, i.e. tariffs and non‐tariff barriers (quotas, licences and technical specifications, among other restrictions), have substantially been reduced or dismantled. Also, the progress towards more liberalised trade regimes, mainly in developing countries, has been manifested in the trade and development literature. Major studies suggest that the performance of more outward‐oriented economies is superior to that of those countries pursuing more inward‐looking trade practices (Greenaway and Nam, 1988; Dollar, 1992; Sachs and Warner, 1995; and Rodríguez and Rodrik, 2000). Recent developments in the international trade literature focus on the potential dynamic effects of trade liberalisation, i.e. simplification of tariff structures and elimination of non‐tariff barriers, in reducing the incentives to rent seeking and in accelerating the flow of technical knowledge from the world market. Moreover, there have been important advances regarding the study of trade liberalisation and its impact on exports, imports and the balance of payments, largely neglected in the literature, often driven by supply‐side considerations.     

Rising Food Prices and Household Welfare: Evidence from Brazil in 2008

Food price inflation in Brazil in the 12 months to June 2008 was 18%, whereas overall inflation was 7%. Using spatially disaggregated monthly data on consumer prices and two different household surveys, we estimate the welfare consequences of these food price increases, and their distribution across households. Because Brazil is a large food producer, with a predominantly wage‐earning agricultural labour force, our estimates include general equilibrium effects on market and transfer incomes, as well as the standard estimates of changes in consumer surplus. Although the expenditure (or consumer surplus) effects were large, negative and markedly regressive everywhere, estimates of the market‐income effect were positive and progressive, particularly in rural areas. Because of this effect on the rural poor, and of the partial protection afforded by increases in two large social assistance benefits, the overall impact of higher food prices in Brazil was U‐shaped, with middle‐income groups suffering larger proportional losses than the very poor. Nevertheless, as Brazil is 80% urban, higher food prices still led to a greater incidence and depth of poverty at the national level.     

Women in the boardroom and their impact on governance and performance

We show that female directors have a significant impact on board inputs and firm outcomes. In a sample of US firms, we find that female directors have better attendance records than male directors, male directors have fewer attendance problems the more gender-diverse the board is, and women are more likely to join monitoring committees. These results suggest that gender-diverse boards allocate more effort to monitoring. Accordingly, we find that chief executive officer turnover is more sensitive to stock performance and directors receive more equity-based compensation in firms with more gender-diverse boards. However, the average effect of gender diversity on firm performance is negative. This negative effect is driven by companies with fewer takeover defenses. Our results suggest that mandating gender quotas for directors can reduce firm value for well-governed firms.     

Fiscal transfers for biodiversity conservation: The Portuguese Local Finances Law

Biodiversity loss is a serious and ongoing global environmental problem. Economic instruments in biodiversity policies can contribute towards reconciling the conservation costs encountered at local level with the benefits of biodiversity conservation at higher levels of governance, from regional and national levels up to the global level. This paper outlines the theoretical foundations of fiscal transfers in conservation policies and also offers a concise account of existing international experience and future prospects. The recently amended Portuguese Local Finances Law (LFL) of 2007, with its groundbreaking new article on the promotion of local sustainability, is analysed in terms of the significance of fiscal transfers for municipal budgets. It is compared with its predecessor law, highlighting changes in fiscal revenues for selected municipalities in the country in relation to their designated conservation areas. The analysis shows that these ecological fiscal transfers can be significant for those municipalities with a large proportion of land under protected status. However, because it also introduces a considerable number of changes to the Portuguese fiscal transfer scheme, the ecological impact of the new LFL is difficult to grasp due to the presence of several crossover effects. The results obtained offer significant insights both for improving the Portuguese LFL and for designing new ecological fiscal transfer schemes.     

Irrigation water productivity in Cambodian rice systems

Knowledge of the marginal productivity of water is crucial for decisions about its allocation between uses, which is particularly important in the context of increasing competition for water. Using primary, plot‐level panel data, this article estimates the marginal productivity of water from supplementary irrigation in lowland rice systems in Cambodia, taking into account farmer and plot heterogeneity as well as self‐selection of supplementary irrigation. Our estimates indicate a range of elasticities for rice output with respect to water inputs of between 0.057 and 0.069 for wet season production, substantially lower than previous estimates based on either aggregate or trial data. We discuss the policy implications of these results, in particular with respect to the utility of demand management policies and the challenges they pose to the decentralization of water management to Farmer Water Users Groups.