The ‘wrong skewness’ problem: a re-specification of stochastic frontiers

In this paper, we study the ‘wrong skewness phenomenon’ in stochastic frontiers (SF), which consists in the observed difference between the expected and estimated sign of the asymmetry of the composite error, and causes the ‘wrong skewness problem’, for which the estimated inefficiency in the whole industry is zero. We propose a more general and flexible specification of the SF model, introducing dependences between the two error components and asymmetry (positive or negative) of the random error. This re-specification allows us to decompose the third moment of the composite error into three components, namely: (i) the asymmetry of the inefficiency term; (ii) the asymmetry of the random error; and (iii) the structure of dependence between the error components. This decomposition suggests that the wrong skewness anomaly is an ill-posed problem, because we cannot establish ex ante the expected sign of the asymmetry of the composite error. We report a relevant special case that allows us to estimate the three components of the asymmetry of the composite error and, consequently, to interpret the estimated sign. We present two empirical applications. In the first dataset, where the classic SF has the wrong skewness, an estimation of our model rejects the dependence hypothesis, but accepts the asymmetry of the random error, thus justifying the sign of the skewness of the composite error. More importantly, we estimate a non-zero inefficiency, thus solving the wrong skewness problem. In the second dataset, where the classic SF does not yield any anomaly, an estimation of our model provides evidence for the presence of dependence. In such situations, we show that there is a remarkable difference in the efficiency distribution between the classic SF and our class of models.     

The impact on the cost of equity capital in the effects of integrated reporting quality

Integrated reporting is a new reporting tool that includes financial and nonfinancial information, which represents a natural evolution of the corporate reporting movement. Although this practice has gained increasing attention in recent years, both from an academic and professional perspective, the quality of the reports still represents a critical aspect due to inadequate investigation. Only a few studies have focused on integrated reporting quality, and contributions on the effects of quality have been even rarer. This study aims to investigate on the impact of integrated reporting quality on the firm's cost of equity capital, owing to the paramount importance of this parameter for firms and investors. Our results highlight that integrated reporting quality has a significantly negative association with the cost of equity capital, suggesting that integrated reporting quality represents an innovative way to reduce the cost of equity. To our knowledge, this is the first study that examines the relationship between integrated reporting quality and a firm's cost of equity.     

The non‐linear dynamics of output and unemployment in the U.S.

This paper studies the joint dynamics of U.S. output and unemployment rate in a non‐linear VAR model. The non‐linearity is introduced through a feedback variable that endogenously augments the output lags of the VAR in recessionary phases. Sufficient conditions for the ergodicity of the model, potentially applying to a larger class of threshold models, are provided. The linear specification is rejected in favour of our threshold VAR. However, in the estimation the feedback is found to be statistically significant only on unemployment, while it transmits to output through its cross‐correlation. This feedback effect from recessions generates important asymmetries in the propagation of shocks, a possible key to interpret the divergence in the measures of persistence in the literature. The regime‐dependent persistence also explains the finding that the feedback from recession exerts a positive effect on the long‐run growth rate of the economy, an empirical validation of the Schumpeterian macroeconomic theories. Copyright © 2001 John Wiley & Sons, Ltd.     

The Optimum Currency Area Puzzle

The theory of optimum currency areas, suggesting the redrawing of currency areas across countries or splitting of national money into several currencies, is at odds with the one-money-one-country pattern that has dominated monetary history for 26 centuries. This paper puts forward an equilibrium approach which, by stressing the influence of the border effect on intranational adjustment, solves the puzzle and analyzes the closely related issue of the viability of monetary unions and regional specialization.     

Disentangling liberalization and privatization policies: Is there a political trade-off?

We empirically investigate the political determinants of liberalization and privatization policies in six network industries of 30 OECD countries (1975–2007). We unbundle liberalization and privatization reforms and study their simultaneous determination in a two-equation model. Unlike previous studies, we account for cross-effects between the two pro-market measures. Our findings unveil that both right-wing and left-wing governments implement liberalizations and privatizations, showing a common trend under the so-called neo-liberalism wave. However, although the privatization rate is higher than liberalization in right-wing environments, the opposite occurs under left-wing governments. We argue that ideological cleavages still affect pro-market reforms, particularly the combination of privatization and liberalization policies. We conclude that different deregulation patterns should be expected under governments characterized by different political ideologies. Our results shed new light on the literature investigating the political-economic rationale underpinning pro-market choices.     

Euro depreciation and trade asymmetries between Germany and Italy versus the US: industry-level estimates

Since April 2014 to March 2015, the European Central Bank expansionary monetary policy instigates a huge depreciation of the euro in terms of dollar. According to the mainstream monetary theory, these dynamics should make the exports cheaper and at the same time make the imports more expensive. Has real depreciation of the euro helped in the improvement of European countries’ trade balances? Following the main methodologies in the recent literature, our study analyses the effects of this depreciation both for Italy and Germany towards the US. We use industry-level data at monthly frequency. The results are different from each bilateral relationship. We find that 11 industries register a long-run improvement (8 for Italy and 3 for Germany). The J-curve effect is proven just in six cases, always for Italy. The inverted J-curve effect is proven in eight cases, four for Germany, and four for Italy. These results seem to be an indirect demonstration of the structural asymmetries between German and Italian economies: German economic system is more able to be competitive with a strong currency, than Italy.     

EXISTENCE AND UNIQUENESS OF EQUILIBRIUM FOR A SPATIAL MODEL OF SOCIAL INTERACTIONS*

We extend Beckmann's spatial model of social interactions to the case of a two‐dimensional spatial economy with a large class of utility functions, accessing costs, and space‐dependent amenities. We show that spatial equilibria derive from a potential functional. By proving the existence of a minimizer of the functional, we obtain that of spatial equilibrium. Under mild conditions on the primitives of the economy, the functional is shown to satisfy displacement convexity. Moreover, the strict displacement convexity of the functional ensures the uniqueness of equilibrium. Also, the spatial symmetry of equilibrium is derived from that of the primitives of the economy.     

Multinational status and firm exit in the Italian manufacturing and service sectors

The aim of this paper is to investigate the determinants of survival for Italian firms according to their ownership status. To this end, we analyze firm survival distinguishing the Italian firms in foreign multinationals (FMNEs), domestic multinationals (DMNEs) and domestic non-multinational firms (NMNEs). The empirical analysis, carried out over the period 2004–2008, is based on the Cox Proportional Hazard Model, in which we look for the impact of ownership dummies on firm survival controlling for several firm and industry specific covariates. Our main findings reveal that FMNEs are more likely to exit the market than national firms in manufacturing and services. In contrast, DMNEs have a higher chance of survival compared with the other firm categories in services. However, when we conduct a finer level of industry classification, we observe the presence of some heterogeneity in the patterns of firm survival. Moreover, we find that the presence of foreign firms has a positive impact on firms’ survival mainly in the service sectors.     

Outward Foreign Direct Investment and Domestic Performance: the Italian Manufacturing and Services Sectors

How does outward foreign direct investment (FDI) affect employment and productivity growth in the home country? Does the impact of outward investment differ among manufacturing and service sectors? In this paper we analyze the effects of investing abroad using firm-level data for Italy for the period 2003–2006. We adopt matching techniques in combination with a difference-in-difference estimator in order to investigate the causal effect of becoming multinational on domestic employment and productivity. Preliminary results suggest that Italian outward FDI has limited effects on domestic employment and performance of internationalizing firms on average. However, results significantly differ depending on the sector (manufacturing versus services) where the MNEs are operating. In particular, we find that while in the manufacturing sector, outward FDI tends to strengthen both productivity and, to less extent, employment. In the service sector, we find a negative effect on employment (two years after the investment).