A generalization of judds method of out-steady-state comparisons in perfect foresight models

We show that Judd (1982)’s method can be applied to any finite system, contrary to what he claimed in 1987. An example shows how to employ the technic to study monetary models in presence of capital accumulation.

Fiscal multipliers in an incomplete markets economy

This paper studies the behavior of fiscal multipliers in two different economic environments: complete markets and incomplete markets. Based on steady state analysis, output multipliers are found within a range between 0.49 and 0.66, when the markets are complete. Under incomplete markets, output multiplier was found in an interval between 0.75 and 0.94. These results indicates that the market structure, which reflects the degree of risk sharing and the intensity of the precautionary motive faced by individuals, plays a key role in determining the fiscal multipliers. In the second part of the paper, was performed an exercise to analyze the dynamic response of macroeconomic aggregates to an exogenous and unexpected rise in government spending financed by lump-sum taxes. In this case, impact output multipliers varies in a range between 0.64 and 0.68, under complete markets, and within 1.05 and 1.20 when markets are incomplete. The results found under incomplete markets are very close to that found on related literature which usually uses an econometric approach or calibrated/estimated New Keynesian models. These results shows that taking into account the deficiencies in the insurance mechanisms can be an interesting way to reconcile theoretical models with the results found on related current literature, without the need of ad-hoc assumptions relative to price stickness.

Inflation and income inequality: a shopping-time aproach: (Forthcoming, Journal of Development Economics)

Our work is based on a simpliÖed heterogenous-agent shoppingtime economy in which economic agents present distinct productivities in the production of the consumption good, and di§erentiated access to transacting assets. The purpose of the model is to investigate whether, by focusing the analysis solely on endogenously determined shopping times, one can generate a positive correlation between ináation and income inequality. Our main result is to show that, provided the productivity of the interest-bearing asset in the transacting technology is high enough, it is true true that a positive link between ináation and income inequality is generated. Our next step is to show, through analysis of the steady-state equations, that our approach can be interpreted as a mirror image of the usual ináation-tax argument for income concentration. An example is o§ered to illustrate the mechanism.

Convergence in Brazil: recent trends and long run prospects

This paper applies to the analysis of the interstate income distribution in BraziI a set of techniques that have been widely used in the current empirical literature on growth and convergence. Usual measures of dispersion in the interstate income distribution (the coefficient of variation and Theil' s index) suggest that cr-convergence was an unequivoca1 feature of the regional growth experience in BraziI, between 1970 and 1986. After 1986, the process of convergence seems, however, to have sIowed down almost to a halt. A standard growth modeI is shown to fit the regional data well and to expIain a substantial amount of the variation in growth rates, providing estimates of the speed of (conditional) J3-convergence of approximateIy 3% p.a .. Different estimates of the long run distribution implied by the recent growth trends point towards further reductions in the interstate income inequality, but also suggest that the relative per capita incomes of a significant number of states and the number of ''very poor" and "poor" states were, in 1995, already quite c10se to their steady-state values.

International integration and long- run persistence of the GNP distribution

We use the Ramsey model of g,Towth elaborated by Bliss [1995] and Ventlira [1997] to show how international integration results in long-nm persistellce Df GNPs distribution, while allowing, under certain conditions on parameters, for convergellce during the transition. First, we pi·ovide relationships which explicitly relate, in the neighborhood of the steady-state, the magnitude of conditional convergence or divergence to the fundamentaIs of the economies. Second, we present ali analysis of the Cobb Douglas case with a broad dass of utility functions and show that there is always transitional convergenee with this technology. Third, directions for testing the Illodel against the traditional dosed-ecollomy setting are proposed. These lead to adding specific and world-wide regTessors to traditional growth regressions.

Optimal monetary policy under administered prices

This work aims to analyze the interaction and the effects of administered prices in the economy, through a DSGE model and the derivation of optimal monetary policies. The model used is a standard New Keynesian DSGE model of a closed economy with two sectors companies. In the first sector, free prices, there is a continuum of firms, and in the second sector of administered prices, there is a single firm. In addition, the model has positive trend inflation in the steady state. The model results suggest that price movements in any sector will impact on both sectors, for two reasons. Firstly, the price dispersion causes productivity to be lower. As the dispersion of prices is a change in the relative price of any sector, relative to general prices in the economy, when a movement in the price of a sector is not followed by another, their relative weights will change, leading to an impact on productivity in both sectors. Second, the path followed by the administered price sector is considered in future inflation expectations, which is used by companies in the free sector to adjust its optimal price. When this path leads to an expectation of higher inflation, the free sector companies will choose a higher mark-up to accommodate this expectation, thus leading to higher inflation trend when there is imperfect competition in the free sector. Finally, the analysis of optimal policies proved inconclusive, certainly indicating that there is influence of the adjustment model of administered prices in the definition of optimal monetary policy, but a quantitative study is needed to define the degree of impact.

O dever constitucional de eficiência administrativa na jurisprudência do Supremo Tribunal Federal

O dever constitucional de eficiência administrativa consiste em norma reitora da atividade regulatória e das demais funções estatais. Este trabalho tem o objetivo de investigar seus sentidos, os tipos de norma em que se classifica e as estruturas argumentativas para a sua aplicação. Entende-se, por sentidos, os critérios usados para se considerar que uma conduta ou medida cumpre ou viola o dever de eficiência, incluindo consideração da relação entre meios para o exercício da atividade administrativa e resultados dessa atividade. Parte-se de diagnóstico de indefinição conceitual, na literatura jurídica brasileira, acerca desse dever constitucional, para investigar a existência de subsídios, na jurisprudência do Supremo Tribunal Federal, que viabilizem elaboração de conceito. Desse modo, verifica-se, na literatura, multiplicidade de definições. Além disso, o aspecto da análise custo-benefício, referido tanto na literatura sobre economicidade quanto nos textos sobre análise econômica do direito, sugere que o assunto também possa ser abordado de modo a correlacioná-lo ao conceito econômico de eficiência de Kaldor-Hicks ou de maximização da riqueza. Na jurisprudência, foi encontrada grande quantidade de sentidos de eficiência, a indicar que o STF pode não ter um posicionamento claro, senão em relação à concepção do dever constitucional de eficiência como um todo, pelo menos em relação a aspectos do conceito, a implicar a necessidade de elaboração, pelo tribunal, casuisticamente, de critérios para considerar que determinada conduta ou medida cumpre ou viola esse dever constitucional. Verificou-se, ainda, a ocorrência de aparentes divergências entre os ministros não apenas com relação à solução concreta de um caso, mas com relação à definição, em um mesmo caso, do sentido do dever de eficiência. Não se pode afirmar, no entanto, com segurança, que a concepção do dever de eficiência em um acórdão seja determinante, no STF, para a orientação dos votos. Ainda assim, um mesmo caso pode ter soluções distintas a depender do sentido de eficiência que se adote. Ademais, os acórdãos que parecem proceder a análise custo-benefício não se parecem referir a conceitos ou a critérios de eficiência econômica para fundamentar essa análise. Esses acórdãos também raramente fazem referência a dados empíricos. Quanto aos tipos de norma às estruturas argumentativas para aplicação, a literatura faz referência a teorias incompatíveis que dificultam compreender de maneira inequívoca como ocorre essa aplicação. O STF, a seu turno, faz uso de pelo menos 3 (três) estruturas argumentativas para aplicar o dever de eficiência: o consequencialismo, a análise custo-benefício e a ponderação de normas. O uso concomitante da análise custo-benefício e da ponderação de normas, contudo, enseja confusão entre o dever de eficiência e a máxima da proporcionalidade. Nesse contexto, a proposta conceitual busca tornar claros os sentidos, os tipos de norma e os modos de aplicação do dever constitucional de eficiência, mediante adoção de referencial teórico único que seja compatível com os achados de jurisprudência. Sendo assim, propõe-se a classificação do dever de eficiência como sobreprincípio e do dever de economicidade como postulado, com referência às concepções teóricas de Humberto Ávila, buscando-se evitar incorrer nos problemas diagnosticados na doutrina e na jurisprudência.