Inflation and output volatility under asymmetric incomplete information

The assumption of asymmetric and incomplete information in a standard New Keynesian model creates strong incentives for monetary policy transparency. We assume that the central bank has better information about its objectives than the private sector, and that the private sector has better information about shocks than the central bank. Transparency has the potential to trigger a virtuous circle in which all agents find it easier to make inferences and the economy is better stabilised. Our analysis improves upon existing work by endogenising the volatility of both output and inflation. Improved transparency most likely manifests itself in falling output volatility.     

What's the monetary value of distributive justice?

This paper proposes a model that can be implemented to estimate the willingness to pay for distributive justice, defined as distribution according to desert. We derive a formula that allows one to recover the willingness to pay for distributive justice from fiscal data and the estimated coefficients of a probit regression. Using this formula and data from a 1998 Gallup Social Audit, we find that on average the monetary value of justice for US households amounts to about one fifth of their disposable income. Moreover, we find evidence of markedly heterogeneous preferences for justice that differ by race and education.     

Analysis of default data using hidden Markov models

The occurrence of defaults within a bond portfolio is modelled as a simple hidden Markov process. The hidden variable represents the risk state, which is assumed to be common to all bonds within one particular sector and region. After describing the model and recalling the basic properties of hidden Markov chains, we show how to apply the model to a simulated sequence of default events. Then, we consider a real scenario, with default events taken from a large database provided by Standard & Poor's. We are able to obtain estimates for the model parameters and also to reconstruct the most likely sequence of the risk state. Finally, we address the issue of global versus industry-specific risk factors. By extending our model to include independent hidden risk sequences, we can disentangle the risk associated with the business cycle from that specific to the individual sector.     

Pricing exotic options in a path integral approach

In the framework of the Black–Scholes–Merton model of financial derivatives, a path integral approach to option pricing is presented. A general formula to price European path-dependent options on multidimensional assets is obtained and implemented by means of various flexible and efficient algorithms. As an example, we detail the cases of Asian, barrier knock out, reverse cliquet and basket call options, evaluating prices and Greeks. The numerical results are compared with those obtained with other procedures used in quantitative finance and found to be in good agreement. In particular, when pricing at-the-money and out-of-the-money options, the path integral approach exhibits competitive performances.     

Assurance Services for Sustainability Reports: Standards and Empirical Evidence

This article contributes to the growing scholarship on the topic of assurance services for sustainability reports. We first synthetically illustrate the main international standards for the implementation of assurance services regarding the subject documents. The second part of our article is an empirical analysis of reports drawn up on the basis of the current Global Reporting Initiative 2006 guidelines, and looks at how effectively these standards have been implemented, analyzing the different typologies of assurance statement.     

A theory of tolerance

We propose a theory of tolerance where endogenous lifestyles and exogenous traits are invested with symbolic value by people. Value systems chosen by parents for their children affect the esteem enjoyed by individuals in society. Intolerant individuals attach all symbolic value to a small number of attributes and are irrespectful of people with different ones. Tolerant people have diversified values and respect social alterity. We study the formation of values attached to various types of attributes and identify circumstances under which tolerance spontaneously arises. Policy may affect the evolution of tolerance in distinctive ways, and there may be efficiency as well as equity reasons to promote tolerance. An empirical investigation of tolerance of homosexuality demonstrates that our theory helps to shed light on survey data of endorsed values.     

Competition and Efficiency in Health Care: An Analysis of the Italian Case

In this paper we look at the Italian NationalHealth System as a case study, in order to investigate whethercompetition exerts positive effects on the efficiency of hospitals.Using the DEA technique we measure the efficiency of Italianhospital production; secondly, we take a regression analysisapproach to analyse its determinants. A general conclusion stemmingout of the analysis is that competition is not a value per seand that its effects on hospitals' performance are affected bythe rules governing the health system.     

Distributional implications of a shorter working week: An unpleasant note

Do “proletarians” gain from work sharing? In a labor-market model with wage rigidity and endogenous labor supply, it is shown that a reduction of the workweek may decrease the expected utility of the poor and increase the expected utility of the rich.     

Models of Capital Requirements in Static and Dynamic Settings

The aim of this paper is twofold. First, we generalize the notion of capital requirement, originally formulated in a regulatory framework, in order to unify other apparently diverse financial concepts. Second, we stress the interpretation of a capital requirement as a measure of risk, providing a link with the theory of coherent risk measures. We define a capital requirement as the minimal initial cost of a hedging action that makes the original position acceptable. Three basic elements are involved in such a methodology: a system of prices, a class of permitted hedging actions and a criterion of acceptability. Our approach is very general, because we construct capital requirements on vector spaces. However, we will give some concrete applications related, in particular, to the availability of a financial market, to the presence of different business units in an institution or to the fact that pay-offs are spread over different dates.