Health investment, saving, and public policy

Abstract.  This paper develops an overlapping‐generations model in which agents invest in health to prolong life in both working and retirement periods. It explores how unfunded social security with or without health subsidies affects life expectancy, economic growth, and welfare. In particular, by extending life at a possible cost of capital accumulation, health subsidies and a pay‐as‐you‐go pension can improve welfare, especially in the short run. JEL classification: I12, J14, J18, O11     

Minorities and majorities: a dynamic model of assimilation

Abstract.  The paper analyses the population dynamics of a country that has two ethnic groups, a minority and a majority, and minority members can choose to assimilate into the majority. Depending on the minority's size, the long‐run outcome can be full or no assimilation. Under certain parameter values multiple equilibria exist, including the two extreme cases. The paper demonstrates that both the long‐run outcome and the equilibrium path may be inefficient. Two extensions to the basic model are considered. The first one allows for a comparison between a multicultural and a 'melting pot' society. The second one introduces population growth and studies the interplay between exogenous and endogenous changes in the minority's size. JEL classification: J110, J150, J180     

Common markets and trade liberalization

Abstract.  The GATT Rounds show that trade liberalization is essentially a cooperative non‐stationary dynamic process. Therefore, the impact of Regionalism on trade liberalization possibly changes over time. I adapt the trade liberalization model of Devereux (1997) to examine how this impact varies. Common markets lead to a one‐time shock in immediate tariffs, as well as to a change in their rate of decline. I find that common markets that happen late in the trade liberalization process are more likely to lead to a decline in immediate tariffs. Common markets also increase the rate of decline of tariffs after their formation. JEL Classification: F03, F15     

Integration or Independence? An Alternative Assessment of Real Interest Rate Linkages in the European Union

The relationship between national real interest rates provides a valuable insight into the extent of economic and financial integration between countries. This paper tests for long‐run parity in ex post real interest rates among the major European Union (EU) countries over the period 1979–2003. The empirical investigation, however, is based on an alternative approach. Strong parity is determined by whether or not the first largest principal component (LPC), based on real interest rate differentials with respect to a chosen base country, is stationary. The qualitative outcome of the test is invariant to the choice of base country, and compared with alternative multivariate tests for long‐run parity, this methodology places less demands on limited data sets. Strong evidence of onshore parity occurs during 1979–1990 and 1993–2003 with the half‐life of a deviation to parity that varies towards 6 months. There is no evidence of long‐run parity among EU members during 1990–1993 despite the easing of remaining capital controls in 1990. Parity is rejected for a sample of non‐EU countries throughout the study period.     

Liquidity Dynamics Across Small and Large Firms

In this paper, we analyse cross‐sectional heterogeneity in the time‐series variation of liquidity in equity markets. Our analysis uses a broad time‐series and cross‐section of liquidity data. We find that average daily changes in liquidity exhibit significant heterogeneity in the cross‐section; the liquidity of small firms varies more on a daily basis than that of large firms. A steady increase in aggregate market liquidity over the past decade is more strongly manifest in large firms than in small firms. Absolute stock returns are an important determinant of liquidity. We investigate cross‐sectional differences in the resilience of a firm's liquidity to information shocks. We use the sensitivity of stock liquidity to absolute stock returns as an inverse measure of this resilience, and find that the measure exhibits considerable cross‐sectional variation. Firm size, return volatility, institutional holdings, and volume are all significant cross‐sectional determinants of this measure.
(J.E.L.: D82, G10, G14).     

Asymmetry in Okun's law

Abstract.  In this paper we support the proposition that the output‐unemployment relationship as represented by Okun's law is asymmetric. Okun's coefficients are defined based on a dynamic model that allows for asymmetry in the relationship between cyclical output and unemployment. Using data from the United States for the post‐war period, our results show that the short‐run effects of positive cyclical output on cyclical unemployment are quantitatively different from those of negative ones, and the data are consistent with the proposition that cyclical unemployment is more sensitive to negative than to positive cyclical output. Several theoretical explanations of asymmetry rationalize the findings. JEL Classification: C13, C22, E32     

Decentralized Policymaking in a Long‐run Growth Model with Seigniorage and Taxes

The paper introduces decentralized policymaking into a game‐theoretic model with output growth through capital accumulation, and in which the determination of taxes, seigniorage and the long‐run growth rate of the economy reflects the strategic interactions between the government, the central bank and the private sector. The paper investigates, among other things, the impact on the long‐run growth rate of a higher degree of inflation aversion of the central bank and a higher degree of inefficiency in the tax system.     

Seasonality, Cointegration, and Forecasting UK Residential Energy Demand

Much of the short‐run movement in energy demand in the UK is seasonal, and the contribution of long‐run factors to short‐run forecasts is slight. Nevertheless, using a variety of techniques, including a recently developed estimation procedure that is applicable irrespective of the orders of integration of the data, we obtain a long‐run income elasticity of demand of about one third, and we are unable to reject a zero price elasticity. An econometric model is shown to provide superior short‐run forecasts to well‐known seasonal time series models ex post , but is inferior to Box‐Jenkins SARMA models when the determinants themselves have to be forecast. However, the relatively short data sample and small number of forecasts suggest caution in generalising these results.     

The compelling effects of compulsory schooling: evidence from Canada

Abstract.  Compulsory school laws have existed for more than a hundred years, and policies to mandate further education continue to be discussed. The implications of these laws, however, are not well understood. Historical changes to compulsory schooling in Canada permit an examination of their effects on would‐be‐dropouts under very different circumstances than those during changes in other countries. Mandating education substantially increased adult income and substantially decreased the likelihood of being below the low‐income cut‐off unemployed, and in a manual occupation. These findings suggest significant gains from this legislation, which seem unlikely offset by the costs incurred while having to remain in school. JEL classification: I20, I28     

Macroeconomic Control in the Transforming Chinese Economy: An Analysis of the Long‐Run Effect

This paper analyzes the issue of macroeconomic control in the Chinese economy where there is a dual structure (consisting of a state sector and a non‐state sector) and the financial sector is still under tight control by the government. Given the dual structure and financial repression, when inflation is a severe problem, the authors investigate whether it is possible for the government to bring inflation under control without hampering long‐term economic growth performance. The investigation is conducted within the context of an endogenous growth model that incorporates the two major institutional features of the transforming Chinese economy. The paper evaluates the long‐run effects of changes in government monetary and fiscal policies on the major macroeconomic aggregates. The analysis suggests that increasing in the interest rate on government bonds will reduce inflation without affecting the growth rate of output; while increasing the nominal interest rate on bank deposits will exert a stagflationary effect on the economy: raising the inflation rate but reducing the growth rate of output.     

Stock Market Fluctuations and Money Demand in Italy, 1913–2003

This paper examines the impact of stock market fluctuations on money demand in Italy from a long‐run perspective. The money demand function estimated by Muscatelli and Spinelli (2000) for a long time span is utilized as a benchmark, adding to the specification information on share prices from the Milan Stock Exchange Reform of 1913 to recent years. For a shorter time period (1938–2003), annual observations on stock market capitalization and turnover velocity are also considered. The empirical findings suggest that stock market fluctuations help to explain temporary movements in liquidity preference, rather than its secular patterns. Overall, a positive association emerges between an index of stock market prices that includes dividends and real money balances; however, the estimated long‐run relationship is unstable. In a dynamic, short‐term specification of money demand, the estimated coefficient of deflated stock prices is positive, and therefore compatible with a wealth effect, in the years 1913–1980, while in the last two decades a substitution effect has prevailed and the correlation between money and share prices has been negative. This is likely to reflect a change in financial structure and the increasing role of opportunity costs defined over a wider range of assets. These results are confirmed by data on stock market capitalization. Moreover, in the recent period, stock market turnover and money growth are positively correlated .     

Demographics and recent productivity performance: insights from cross‐country comparisons

Abstract.  Over the last few decades, countries have experienced quite different patterns of productivity growth. In this paper, we emphasize the role of country level demographics in explaining these differences. In particular, looking over the period 1960–2002, we show that cross‐country data support the notion that, starting in the late 1970s, countries went through a period of technological transition that lasted at least until the mid‐1990s for the fastest adjusting countries and is still proceeding for the slower adjusting countries. The main claim of the paper is that the country‐level rate of labour growth was a key factor driving the speed of adjustment to the new technological paradigm, implying that much of the cross‐country difference in economic performance over recent decades can be explained by demographic differences across countries as opposed to the many other factors emphasized in the literature. JEL classification: O33, O41     

Distribution Dynamics and Cross‐Country Convergence: A New Approach

Distribution dynamics is a method for studying the evolution in time of an entire cross‐section distribution and has been initially employed to assess cross‐country convergence of per capita incomes. It has subsequently seen a widespread application in many different economic areas. When describing the law of motion of the distribution as a Markovian stochastic process, working in a discrete state‐space set up has several advantages, but the arbitrary discretisation of a continuous state‐space process has the undesired effect of removing the Markov property. This paper outlines a rigorous method for discretising a continuous state‐space Markov chain. The method is then applied to the distribution of per capita income across countries to reassess the (non‐) convergence phenomenon. It is found that the long run polarisation of per capita incomes across countries emerges even more dramatically than in previous studies.     

Are migrants more skilled than non‐migrants? Repeat,return, and same‐employer migrants

Abstract.  I examine the determinants of inter‐state migration of adults within western Germany, using the German Socio‐Economic Panel from 1984–2000. Migrants who do not change employers represent one‐fifth of all migrants and have higher education and pre‐move wages than non‐migrants. Skilled workers thus have a low‐cost migration avenue that has not been considered in the previous literature. Other migrants are heterogeneous and not unambiguously more skilled than non‐migrants. I confirm that long‐distance migrants are more skilled than short‐distance migrants, as predicted by theory, and I show that return migrants are a mix of successes and failures. Most repeat migration is return migration. JEL classification: J6     

Social interactions in small groups

Abstract.  In the well‐known 'critical mass' model of social interactions, aggregate behaviour exhibits multiple equilibria if the influence of group behaviour on individual behaviour exceeds some fairly high threshold. I demonstrate that this property depends on an implicit assumption that the relevant social group is large (infinite). With small (finite) social groups, the same model exhibits multiplicity whenever group behaviour exerts any influence. The range of equilibrium group behaviour depends on the size of the social group as well as its strength of influence. Brief applications on youth smoking and retirement planning demonstrate the implications of these results for applied work. JEL classification: Z13, D00     

Integrated Risk Management with a Filtered Bootstrap Approach

We present a multi-period risk model to measure portfolio risk that integrates market risk, credit risk and, in a simplified way, liquidity risk. Thus, it overcomes the major limitation currently shared by many risk models that are unable to give a complete picture of all portfolio risks according to a single, coherent framework. The model is based on the Filtered Bootstrap approach; hence, it captures conditional heteroskedasticity, serial correlation and non-normality in the risk factors, that is, most of the features of observed financial time series. Being a simulation risk model, it copes in a natural way with derivatives as it allows the full valuation of the probability density function of the contracts. In addition, it is a suitable and flexible way to generate future scenarios on medium‐term horizons, so this model is particularly appropriate for asset management companies.     

A cross‐country comparison of the cyclicality of real wages

Abstract.  This paper contains the first cross‐country comparison of the cyclical behaviour of real wages using microdata. After controlling for changes in labour quality, I find that real wages are strongly procyclical in Canada, the United Kingdom, and the United States. In contrast, the cyclicality of government‐published real aggregate hourly wages varies substantially across these three countries. The disparity suggests that a direct comparison of the cyclical behaviour of real aggregate wages is misleading. Finally, I show that variations in labour quality also bias the cross‐country correlation of several key labour market variables. JEL classification: J3, E3
Une comparaison transversale entre pays du caractère cyclique des salaires réels.  Ce mémoire présente la première comparaison entre pays du comportement cyclique des salaires réels à l'aide de micro‐données. Après normalisation pour tenir compte des changements dans la qualité du travail, cette étude montre que les salaires réels sont pro‐cycliques au Canada, au Royaume‐Uni et aux Etats Unis. Au contraire, le caractère cyclique des données sur les salaires horaires agrégés varie substantiellement entre ces trois pays. Cette disparité suggère qu'une comparaison directe du comportement cyclique des salaires réels agrégés peut être trompeuse. Finalement, cette étude montre que les variations dans la qualité du travail biaisent aussi les corrélations entre pays de plusieurs variables du marché du travail.     

What drives the cross‐country growth and inequality correlation?

Abstract.  We present a neo‐classical model that explores the determinants of growth‐inequality correlation and attempts to reconcile the seemingly conflicting evidence on the nature of the growth‐inequality relationship. The initial distribution of human capital determines the long‐run income distribution and the growth rate by influencing the occupational choice of the agents. The steady‐state proportion of adults that innovates and updates human capital is path dependent. The output elasticity of skilled‐labour, barriers to knowledge spillovers, and the degree of redistribution determine the range of steady‐state equilibria. From a calibration experiment we report that a skill‐intensive technology, low barriers to knowledge spillovers, and high degrees of redistribution characterize the industrial countries with a positive growth‐inequality correlation. A negative correlation between growth and inequality arises for the group of non‐industrial countries with the opposite characteristics. JEL classification: E1, O4     

Price stickiness, trend inflation, and output dynamics: a cross‐country analysis

Abstract.  Sticky price models based on menu costs predict that countries with high trend inflation should have (i) smaller impact effects of demand shocks on output and (ii) less persistent output fluctuations, relative to low‐trend inflation countries. These predictions are tested, controlling for changes in trend inflation, using a country‐specific approach. The results do not support the second prediction. That prediction is also not robust to a modified measure of trend inflation that excludes episodes of hyperinflation. These findings suggest that while price stickiness is important for understanding short‐run impact effects, real propagation mechanisms may drive persistence in output fluctuations.