The paper explores the fit properties of a class of multivariate Lévy processes, which are characterized as time-changed correlated Brownian motions. The time-change has a common and an idiosyncratic component, to re ect the properties of trade, which it represents. The resulting process may...

This paper constructs a class of multivariate Gaussian marked Poisson processes to model asset returns. The model proposed accommodates the cross section properties of trades, allows for returns to be correlated conditional on trading activity, and preserves the economic intuition of normality...

We analyze the effects of income support on unemployment and welfare dynamics when stigma is attached to welfare provision. Stigma has been modeled in the literature as a cost of welfare participation; in this paper we analyze the effect of income support on unemployment and welfare dynamics by...

Aim of this work is to evaluate the overall effect of social origins on secondary school track enrolment in Italy, Germany and Netherlands, allowing for consistent cross country comparisons. PISA 2003 is employed. Track choices are assumed to depend on student's ability and social origins; since...

In this paper we propose a non-equilibrium model in order to explain the search behavior of unemployed workers. This modeling strategy, framed in a rational choice paradigm, allows us to investigate the effects of negative duration dependence in the out-of-unemployment hazard rate, accounting...

Negative duration dependence in the exit rate from social assistance is an important issue addressed in the dynamic welfare participation literature. If heterogeneity is properly modelled, the decline of the exit rate is ascribed to a progressive reduction of the capability to get off welfare...

We investigate the effects of income support on unemployment and welfare dynamics when stigma is attached to welfare provision. Stigma has been modelled in the literature as a cost of entry into welfare. Allowing for psychological factors, we assume that with stigma welfare provision leads to...

A definition of set-wise differentiability for set functions is given through refining the partitions of sets. Such a construction is closely related to the one proposed by Rosenmuller (1977) as well as that studied by Epstein (1999) and Epstein and Marinacci (2001). We present several classes...

The aim of our work is to measure the impact of social origins on the choice of the academic track in order to allow for consistent cross-country comparisons. We analyze Italy, the Netherlands, and Germany, employing the data from PISA 2003. A substantive problem is that a good measure of...