Monetary Policy,Trend Inflation,and Unemployment Volatility

The literature has long agreed that the DMP model (after Diamond 1982, Mortensen 1982, Pissarides 1985) with search and matching frictions in the labor market can deliver large volatilities in labor market quantities, consistent with empirical data, only if there is at least some wage stickiness. I show, however, that the model can deliver nontrivial volatilities without wage stickiness, as long as it has price dispersion and nonzero long‐run inflation rates. I find that by keeping inflation at a positive rate, monetary policy may be accountable for the large standard deviations observed on labor market variables. In addition, the Shimer (2005) puzzle disappears under monetary policy shocks.     

Exports,Supply Constraints and Growth: An Investigation using Regional Data

In this work we first model the role of demand‐ and supply‐side factors (labour market adjustment, productive efficiency) in explaining economic growth. Empirically testing the model, we evaluate why different growth regimes may appear in the 20 Italian administrative regions. This exercise uses a two‐stage econometric approach. Estimates for the elasticity of manufacturing output to exports are obtained from regional time series: a significant long‐run relationship indicates the existence of a demand‐constrained growth regime. We then ascertain whether the regional dispersion of supply‐side factors has an impact on the regional dispersion of growth regimes. The empirical evidence supports our expectations of strong regional differences. Southern regions are less likely to display demand‐constrained regimes. In explanation of these differences, second‐stage analysis reveals that a strong role is played by such efficiency‐enhancing factors as technological innovation, bank diffusion and ‘social capital’. No role is found for labour market rigidities.     

Book Reviews

Technological Collaboration in Industry; strutegy, policy and internationalization in innovation
Corporate Venturing: Creating New Businesses within the Firm
Handbook of Innovation Management
Technology and enterprise in a historical perspective
Intellectual Property for Engineers
The Ernst & Young Business Plan Guide
crnagement as a New Technology
Mass Customization: The New Frontier in Business Competition     

ESTIMATING MARK‐UPS FROM PLANT‐LEVEL DATA*

Typical plant‐level data sets do not report quantities. This paper shows that estimating mark‐ups (price‐cost ratio) in product‐differentiated industries using deflated sales to proxy quantity is not appropriate due to unobserved price heterogeneity. This paper presents an econometric model for estimating mark‐ups that controls for unobserved prices. The model shows that ignoring price heterogeneity results in mark‐up estimates that converge to one, whatever the value of the true price‐cost ratio. Estimates obtained using real data are consistent with this result, as they reveal that ignoring price heterogeneity leads to spurious evidence of firms with little or no market power.     

Earnings Management and Cultural Values

Using theory and empirical data from social psychology to measure for cultural differences between countries, this research studies the effect of individualism, defined as the degree to which individuals are integrated into groups ( Hofstede 1980 ), and egalitarianism, defined as a society's cultural orientation with respect to intolerance for abuses of market and political power ( Schwartz 1994, 2004 ) on earnings management. This research finds a significant cultural influence on earnings management. Specifically, the results show that countries scoring high on individualism tend to have lower levels of earnings management. Using the Schwartz (1994, 2004 ) framework, this study finds that egalitarianism is negatively related to earnings management. The analysis shows that, besides the formal investor protection, it is relevant to consider cultural differences to explain earnings management. This analysis also supports the idea that culture may be an important element in the discussion of global convergence towards a single corporate governance model, or the implementation of corporate governance codes inspired by codes from societies with different cultural values.     

Cuestionario del Trabajo Decente: Elaboración y validación en dos muestras de trabajadores intelectuales

Se propone un Cuestionario del Trabajo Decente como herramienta de medición basada en las percepciones de los trabajadores, cubriendo así un vacío de investigación: el análisis a escala individual. Los autores parten de los elementos fundamentales del Programa de Trabajo Decente de la OIT. La versión definitiva del cuestionario comprende 31 enunciados vinculados, mediante análisis factorial, a siete factores. Las pruebas de fiabilidad, validez convergente y validez discriminante arrojan buenos valores, por lo que el cuestionario podría abrir nuevas vías de investigación empírica sobre la base del concepto de trabajo decente.     

Parameter-based Decision Making under Estimation Risk: An Application to Futures Trading

This study shows how the standard portfolio model of futures trading should be modified when there is less than perfect information about the relevant parameters (estimation risk). The standard and the optimal decision rules for futures trading in the presence of estimation risk are compared and discussed. An operational model of futures trading for use under estimation risk is advanced. In the presence of relevant prior and sample information, the model can be used to optimally blend both types of information.     

Optimal Hedging Under Forward-Looking Behaviour*

The study focuses on the production and hedging behaviour of forward-looking risk-averse competitive firms. It is shown that there is separation between production and hedging. Optimal productin for a forward-looking firm is identical to that of an otherwise equivalent myopic firm. However, the optimal forward-looking hedge differs from the optimal myopic hedge. If forward prices are unbiased, full hedging is suboptimal when the firm is forward looking and output and material input prices are contemporaneously related. Furthermore, under certain conditions, the optimal forward-looking hedge under unbiased forward prices is strictly smaller than the full hedge.