Some consequences of the unknottedness of the Walras correspondence

Two basic properties concerning the dynamic behavior of competitive equilibria of exchange economies with complete markets are derived essentially from the fact that the Walras correspondence has no knots.     

K-means clustering of item characteristic curves and item information curves via functional principal component analysis

Quality & Quantity - The assessment of students’ performances and learning skills plays a key role in the educational context. Common tools for analyzing test data are item response...     

Bank shareholding and lending: Complementarity or substitution? Some evidence from a panel of large Italian firms

The paper studies the motivations behind banks’ shareholding of non-financial firms using a panel of large Italian companies in the period 1994–2000. Empirical evidence shows that banks are shareholders of companies that are less profitable, have experienced slower growth, are more indebted, are endowed with collateral and have hard time to repay their debt out of current income. Banks are more likely to hold shares in companies they lend to. Overall the evidence suggests that there is complementarity between bank equity holding and lending. A plausible explanation is the shareholder–debtholder conflict, the evidence is weakly compatible with governance and information hypotheses.     

Exploring different views of exchange rate regime choice

The empirical distinction between de facto and de jure exchange rate regimes raises a number of interesting questions. Which factors may induce a de facto peg? Why do countries enforce a peg but do not announce it? Why do countries “break their promises”? We show that a stable socio-political environment and an efficient political decision-making process are a necessary prerequisite for choosing a peg and sticking to it, challenging the view that sees the exchange rate as a commitment device. Policymakers seem rather concerned with regime sustainability in the face of adverse economic and socio-political fundamentals.     

Income inequality and the development of environmental technologies

Within rich countries, a large dispersion in the capacity of generating environmental innovations appears correlated to the level of inequality. Previous works analyze the relationship between inequality and environmental quality in a static setting. This paper builds a dynamic model more suitable to analyze technological externalities driven by the emergence of a new demand for green products. Under fairly general assumptions on technology and preferences, we show that: 1. the relationship between inequality and environmental innovation is highly non-linear and crucially depends on per-capita income; 2. an excessive inequality harms the development of environmental technologies especially in rich countries. Key to our results is the fact that externalities generated by pioneer consumers of green products benefit the entire population only for relatively low income distances. The empirical analysis robustly confirms our theoretical results, that is: whereas for rich countries inequality negatively affects the diffusion of innovations, per-capita income is paramount in poorer ones.     

Introduction: A New Architecture or New System? A Survey of International Monetary Reform in the 1990s

The international monetary system (IMS) is a macroeconomic concept that encompasses the foreign exchange-rate regulation, the capital movement system, and all “the rules of the game” for the adjustment of international payment imbalances. The international financial architecture (IFA) is, in contrast, a microeconomic concept and should not be considered synonymous with the IMS. The IFA is one element of the IMS. The current set of international monetary arrangements has been frequently called a “nonsystem.” Today there are two missing pillars in the reform efforts: a framework for managing the interdependence among the macroeconomic policies of the global powers (the United States, Europe, and Japan) and the market-oriented approach to the financing of the IMF.     

Hardened Budgets and Enterprise Restructuring: Theory and an Application to Romania

We identify the presence of soft budgets and analyze their impact on enterprise restructuring in Romania over the initial transition period. A simple analytical framework is developed to show that hardened budget constraints foster rationalization of costs but not new investment. The latter requires availability of external financing. The model emphasizes the importance of the credibility of hardened budgets and the empirical findings are consistent with its predictions. Using a sample of over 4000 Romanian enterprises from 1992 to 1995, we show that hardened budget constraints induce labor shedding. However, there is no evidence of new investments. J. Comp. Econ., December 2001, 29(4), pp. 749–763. University of Sienna, Central European University, and CEPR; and World Bank and CEPR. © 2001 Elsevier ScienceJournal of Economic Literature Classification Numbers: G32, G34.     

The role of fiscal policy in Japan: a quantitative study

This paper analyzes the role of fiscal policy in the recent slowdown in Japan. A dynamic general equilibrium model is developed in which fiscal policy can have both expansionary effects (through increasing returns) and contractionary effects (through the increase of public debt and tax burden). A version of the model is calibrated to the Japanese economy and is used to measure the importance of both these effects. We find that, under a wide range of parameters, net expansionary effects are quantitatively small, thus suggesting a limited role for fiscal stabilization     

Habit formation and indeterminacy in overlapping generations models

I introduce habit formation into an otherwise standard overlapping generations economy with pure exchange populated by three-period-lived agents. Habits are modeled in such a way that current consumption increases the marginal utility of future consumption. With logarithmic utility functions, I demonstrate that habit formation gives rise to stable monetary steady states in economies with hump-shaped endowment profiles and reasonably high discount factors. Intuitively, habits imply adjacent complementarity in consumption, which in turn explains why income effects are sufficiently strong in spite of the logarithmic utility. The three-period horizon further strengthens the income effect.