Imported inputs and skill upgrading

This paper studies the effect of imported inputs on the relative demand for high-skill labor. To this purpose, it applies propensity score matching techniques to firm-level data for 27 transition countries. The results show that importing inputs induces skill upgrading. Specifically, it explains more than one-quarter of the unconditional difference between importers and non-importers in the employment share of high-skill workers. The paper explores possible mechanisms behind this result. In particular, it reports suggestive evidence that importing leads firms to engage in high-skill intensive activities, such as production of new goods, improvement of product quality and, to a lesser extent, R&D and technology adoption.     

Networks to Enforce European Law: The Case of the Consumer Protection Cooperation Network

Central to this paper is the aim to discuss the effectiveness of the Consumer Protection Cooperation Network (also known as ??CPC Network??) for consumer protection in cross-border disputes in the European Union (EU). In doing so, this paper deals with the literature about networks established by grouping the Commission and national authorities to enforce European Law. The examples of the European Competition Network and the CPC Network are interesting because they raise questions with regard to the effectiveness and the accountability of emerging network-based law enforcement. The development of the CPC Network may have relevant implications for other areas of EU law and policy, including the question whether network-based governance could be transposed in other fields of EU Law.     

Beware of ‘Good’ Outliers and Overoptimistic Conclusions*

The main goal of this paper is to warn practitioners of the danger of neglecting outliers in regression analysis, in particular, good leverage points (i.e. points lying close to the regression hyperplane but outlying in the x‐dimension). While the types of outliers which do influence regression estimates (vertical outliers and bad leverage points) have been extensively investigated, good leverage points have been largely ignored, probably because they do not affect the estimated regression parameters. However, their effect on inference is far from negligible. We propose a step‐by‐step procedure to identify and treat all types of outliers. The paper of Persson and Tabellini [American Economic Review (2004) Vol. 94, pp. 25–46] linking the degree of proportionality of an electoral system to the size of government is discussed to illustrate how the choice of a measure and the existence of atypical observations may substantially influence results.     

On the short-maturity behaviour of the implied volatility skew for random strike options and applications to option pricing approximation

In this paper, we propose a general technique to develop first- and second-order closed-form approximation formulas for short-maturity options with random strikes. Our method is based on a change of numeraire and on Malliavin calculus techniques, which allow us to study the corresponding short-maturity implied volatility skew and to obtain simple closed-form approximation formulas depending on the derivative operator. The numerical analysis shows that these formulas are extremely accurate and improve some previous approaches for two-asset and three-asset spread options such as Kirk’s formula or the decomposition method presented in Alòs et al. [Energy Risk, 2011, 9, 52–57]. This methodology is not model-dependent, and it can be applied to the case of random interest rates and volatilities.     

Capital mobility and international sharing of cyclical risk

This paper investigates whether the international globalization of financial markets allows for significant cross-country risk-sharing at the business cycle frequency. We find that cross-country risk-sharing is still limited and this is unlikely to be the result of financial frictions that limit state-contingent contracts. Part of the limited international risk sharing could be the consequence of frictions that de-facto reduce the short-term mobility of financial capital. But even with these frictions we find significant divergence between model predictions and the data.     

Constitutional “Rules” and Intergenerational Fiscal Policy

This paper analyzes the impact of alternative political institutions on sustainable fiscal policies. We study the choice of intergenerational transfers as outcomes of an infinite social security game among successive selfish median voters. Majoritarian systems accord the current median voter maximum fiscal discretion but no direct influence over future policy. This political arrangement sustains, among others, dynamically inefficient transfers and volatile, non-stationary sequences. Constitutional rules award to the minorities veto power over fiscal policy changes proposed by the majority. This unanimity provision is equivalent to partial precommitment. Under constitutional rules, sustainable fiscal policies feature Pareto efficient, non decreasing transfer sequences.     

Monetary policy and the financial decisions of firms

Summary. In this paper we develop a general equilibrium model with heterogeneous, long-lived firms where financial factors play an important role in their production and investment decisions. When the economy is hit by monetary shocks, the response of small and large firms differs substantially, with small firms responding more than big firms. As a result of the financial decisions of firms, monetary shocks have a persistent impact on output. Another finding of the paper is that monetary shocks lead to considerable volatility in stock market returns.Received: 20 November 2003, Revised: 26 August 2004 JEL Classification Numbers: E5, G3.T.F. Cooley, V. Quadrini: We have received helpful comments on earlier versions of this paper from Jeff Campbell, David Chapman, Thomas Cosimano, Joao Gomes, Boyan Jovanovic, José-Víctor Ríos-Rull, and Harald Uhlig. Correspondence to: V. Quadrini     

Ethical notions and social life: some problems in the measurement of attitudes

In this paper an attempt is made to distinguish three types of ethical orientation. The first one, individually oriented ethics, consists of a set of norms regulating the social behavior of people in which the predominating norms are those which regulate behavior towards other members of small, more or less informal, groups. The second one, socially oriented ethics, does not so much evaluate the personal qualities of the individual nor the various elements of his conduct as a person, but rather the effects caused by the fact that he occupies a definite position in the social structure. Empirical data—based on Polish and American studies—support these distinctions. The third type of ethics, which emerged recently and is based on the concern about population growth, human resources, environment, etc., says that the earth is the only and common home for different social systems. It embraces also the relation of mankind to all other living creatures. This is global ethics.     

Independence of irrelevant alternatives and consistency of choice

Summary. We show that Arrow's condition of independence of irrelevant alternatives is logically related to conditions of consistency of choice (in particular, to Arrow's choice axiom). The relation, however, is indirect. The link is provided by an independence condition due to Hansson (Synthese, 1969) which applies to fixed agenda social choice rules.