Efficiency in Crime Prevention: A Case Study of the Lisbon Precincts

This paper analyzes the technical efficiency of the Lisbon police precincts in order to investigate its performance. A stochastic cost frontier model is used to generate efficiency scores, assuming that efficiency is time varying. It investigates its efficiency and finds that the results are, at best, mixed since the efficient scores are low and not time varying. Therefore, an alteration of management procedures is proposed in order to enable efficiency to be increased based on a governance–environment framework.Financial support from Fundação para a Ciência e Tecnologia/MCT under FCT/POCTI partially funded by FEDER is gratefully appreciated. The authors also thank the participants at the International Atlantic Economic Conference in Lisbon, Portugal, March 10–13, 2004 for helpful comments. For our mistakes, the usual disclaimer applies.     

Análisis de la histéresis del desempleo en México ante shocks macroeconómicos

This research presents the behavior of the Mexican unemployment rate and shows the dependence with own history and macro variables. The concept of hysteresis or persistence tries to separate this inertia in the unemployment rate and some macroeconomic and endogenous factors. The results show a high inertia in the Mexican labor market, justified by the monetary levels and the dependence of the investment levels, considering the shocks of exports that affect the unemployment in the long term.     

Introduction to Special Issue on: ‘Inequalities in the Least Developed Countries – Some Lessons from Africa’

This special issue comprises six papers analysing different dimensions of inequalities in African countries. Three papers deal with the trend in inequality in consumption in Mozambique, with multidimensional poverty in four sub‐Saharan countries, and with the relationship between living conditions and subjective well‐being in African countries. The other three are focused on gender issues and are focused on Mozambique, dealing with gender inequalities in the access to contract farming arrangements as well as to employment out of subsistence agriculture, or with the effect of women’s empowerment on children’s health. This introduction provides a short overview of how they contribute to a better understanding of inequalities in low‐income countries.     

Saving behaviour: evidence from Portugal

This paper analyses the determinants of saving behaviour among Portuguese households using a structural equation model with latent variables. It is found that the main factors directly influencing households' saving behaviour are their attitude towards saving and their level of income. However, savers' behaviour is also indirectly influenced by their perceptions of longevity, their feelings as savers, the replacement rate and the age. The family size does not have any effect, either directly or indirectly. Policy implications are derived from the study.     

Bayesian and consistent assessments

In a Bayesian assessment, beliefs are computed from the strategy profile applying Bayes rule at positive probability information sets. A consistent assessment is the limit point of a sequence of completely mixed Bayesian assessments. We characterize the set of extensive forms for which the sets of Bayesian and consistent assessments coincide. As an illustration of the results, we characterize consistency in some multi-period games with simultaneous actions.     

How big (small?) are fiscal multipliers?

Contributing to the debate on the macroeconomic effects of fiscal stimuli, we show that the impact of government expenditure shocks depends crucially on key country characteristics, such as the level of development, exchange rate regime, openness to trade, and public indebtedness. Based on a novel quarterly dataset of government expenditure in 44 countries, we find that (i) the output effect of an increase in government consumption is larger in industrial than in developing countries; (ii) the fiscal multiplier is relatively large in economies operating under predetermined exchange rates but is zero in economies operating under flexible exchange rates; (iii) fiscal multipliers in open economies are smaller than in closed economies; (iv) fiscal multipliers in high-debt countries are negative.     

Comovements among U.S. state housing prices: Evidence from fractional cointegration

This study investigates the relationship between U.S. state housing prices and overall U.S. housing prices as well as the relationship among state housing prices using fractional integration and cointegration techniques. The results based on parametric and semiparametric estimators reveal that some states contain unit roots though we fail to find cointegrating relations between U.S. states housing prices and the overall U.S. housing prices as well as among state housing prices. The results raise doubts regarding the long-run convergence in U.S. state housing prices and the presence of the ripple effect.     

Valuation of environmental goods: A shadow value perspective

This paper proposes a shadow value-based methodology for the economic valuation of environmental goods. The proposed method derives from a “cost of production perspective”. This type of approach represents advantages with respect to usual methods linked with “demand perspective”, when the interests of future generations is under consideration. The computational procedure is simple and the required information easy to obtain. We explain how the methodology works with the help of a forestry example.