Back to square one: Identification issues in DSGE models

We investigate identification issues in DSGE models and their consequences for parameter estimation and model evaluation when the objective function measures the distance between estimated and model-based impulse responses. Observational equivalence, partial and weak identification problems are widespread and typically produced by an ill-behaved mapping between the structural parameters and the coefficients of the solution. Different objective functions affect identification and small samples interact with parameters identification. Diagnostics to detect identification deficiencies are provided and applied to a widely used model.     

Tracing neoliberalism in Italy: intellectual and political connections

Neoliberalism was a powerful ideology and ‘thought collective’ between the two World Wars and after WWII. The paper aims to enquire into the channels through which neoliberalism dwelled in Italian intellectual, economic and political history, from the early 1920s to the mid-1970s, unveiling the role of public intellectuals like Einaudi, and hardly unknown think-tanks like Ceses.     

Is the emperor wearing new clothes? A social assessment of the European Union 2007–2013 financial framework

ABSTRACT

Over the years, European leaders have proudly waved a social flag as one of the European Union’s (EU) constituent and differentiating elements. This commitment is assessed here through the social footprint of the European 2007–2013 multiannual financial framework among the EU countries and, worldwide, using an extended multiregional input–output model. The focus is on the quantity and the quality of income and jobs generated. We find that well-known differences among its northern, southern and eastern regions threaten the EU’s intentions for high social standards, enabling first- and second-class winners. Core EU countries account for the most of the Funds and, thus, most of the positive economic and social impacts, mainly through spillovers from peripheral regions. Beyond the EU borders, Funds expenditures induce capital compensation boosts in emerging countries not balanced by a similar labor compensation impulse. Indeed, China captures the bulk of low-skilled and temporary employment.     

RISK MEASURES: RATIONALITY AND DIVERSIFICATION

When there is uncertainty about interest rates (typically due to either illiquidity or defaultability of zero coupon bonds) the cash‐additivity assumption on risk measures becomes problematic. When this assumption is weakened, to cash‐subadditivity for example, the equivalence between convexity and the diversification principle no longer holds. In fact, this principle only implies (and it is implied by) quasiconvexity. For this reason, in this paper quasiconvex risk measures are studied. We provide a dual characterization of quasiconvex cash‐subadditive risk measures and we establish necessary and sufficient conditions for their law invariance. As a byproduct, we obtain an alternative characterization of the actuarial mean value premium principle.     

On the sources of business cycles in the G-7

This paper examines sources of cyclical movements in output, inflation and the term structure of interest rates in the G-7. It employs a novel identification approach which uses the sign of the theoretical cross correlation function in response to shocks to catalog orthogonal disturbances. We find that demand shocks are the dominant source of output and inflation fluctuations in several of the G-7 countries. The proportion of term structure variability explained by different structural sources does not depend on the horizon. Apart from the US and Canada, structural shocks are nearly uncorrelated across countries.     

Balancing tourism education and training

This paper assumes that tourism educated and trained students play different roles (in driving future tourist demands and in meeting current tourist preferences, respectively), and it states that the main features characterising the four stakeholders involved in the design, development and implementation of tourism programmes (firms, students, educational and governmental institutions), together with the main facts they face in taking their decisions, lead to a non-optimal strategic long-run equilibrium, where tourism non-graduated or differently-from-tourism graduated employees prevail. The development of an evolutionary model allows to identify the main features characterising firms and students, to be focused on by educational and governmental institutions, in order to move towards the optimal equilibrium, where tourism graduated employees prevail, while the development of a dynamic model allows to show that this equilibrium is not detrimental to tourism trained employees. This work also suggests a possible educational strategy that could allow to move away from the non-optimal equilibrium, by achieving public objectives (such as environmental or ethical tourism), by relying on feasible educational approaches (about what and how to teach), and by taking into account the private characteristics (of firms and students). Therefore, balancing tourism education and training is both possible and beneficial to all stakeholders involved.     

TRAFFIC MANAGEMENT IN WHOLESALE INTERNATIONAL ROAMING: TOWARDS A MORE EFFICIENT MARKET?*

Despite a general trend of lower charges for mobile calls, in Europe, prices for international roaming calls have remained at levels that are surprisingly high. The apparent reluctance of mobile network operators to lower roaming tariff is generating many antitrust concerns. This paper presents in a two‐country two‐firm framework the functioning of the current system governing wholesale international roaming agreements based on interoperator tariffs. The focus is on the role of traffic management; thanks to the emergence of traffic direction techniques, mobile network operators are allowed to select the roaming partner. We show that, unless these techniques do not allow for perfect control on traffic flows, traffic management does not improve the market's efficiency. In line with the regulatory mechanism recently adopted by the European Commission, we show that a simple price cap mechanism may restore partial efficiency in the wholesale market. We also show that although cross‐border cooperation at the wholesale level is Pareto efficient, it will not emerge as an equilibrium of a two‐sided matching game.     

Monotone continuous multiple priors

Summary. In a multiple priors model á la Gilboa and Schmeidler (1989), we provide necessary and sufficient behavioral conditions ensuring the countable additivity and non-atomicity of all priors.Received: 25 November 2002, Revised: 24 June 2004, JEL Classification Numbers: D81.We thank Roko Aliprantis, Maristella Botticini, Erio Castagnoli, Larry Epstein, Paolo Ghirardato, Itzhak Gilboa, Luigi Montrucchio, David Schmeidler, Marciano Siniscalchi, an Associate Editor, and an anonymous referee for helpful discussions. Fabio Maccheroni and Massimo Marinacci gratefully acknowledge the financial support of MIUR and NOMOS Sistema (Milano).     

How Long is a Piece of Cable? Equilibrium Determination of Local Telephone Areas

This paper studies the endogenous determination of telephone local calling areas. In many telephone systems, calls between users in the same calling area are local; calls to outside the calling area are long distance and priced differently. We allow the extension of this area to be treated as a strategic variable. We show the extension of the calling areas which maximizes the carrier's profit to be the same which a welfare maximizing regulator would choose. Under a price cap regime in which prices are required to meet an average price constraint, the firm manipulates strategically the extension of the local calling areas. We end the paper by considering the case of a competitive market. In this case, again, the owner of the local loop extends the local calling areas in response to decreased efficiency or increased competition of its competitors. Received April 25, 2002; revised version received September 9, 2002 Published online: April 30, 2003