In this paper, we propose a multivariate market model with returns assumed to follow a multivariate normal tempered stable distribution. This distribution, defined by a mixture of the multivariate normal distribution and the tempered stable subordinator, is consistent with two stylized facts...

The aim of this paper is to assess whether the data-generation process of the GDP can be interpreted by means of a nonlinear model instead of a linear one. We model the first differences of logarithmic real GDP data with constant parameters for those European countries (France, Germany, Italy,...

The aim of this paper is to assess whether the data-generation process of the GDP can be interpreted by means of a nonlinear model instead of a linear one. We model the first differences of logarithmic real GDP data with constant parameters for those European countries (France, Germany, Italy,...

The problem we want to solve in this paper is that of finding a statistical test that pennits us to compare the impulse response function (JRF) of a linear model with that of a nonlinear one. We achieve our goal starting with a simple case where the comparison is between two VAR models of...

In the last few years new techinques able to help in explaining macroeconomic fluctuations have been developed. Following the article o fBlanchard (1989), concerning US macroeconomic data we will examine the UK economy using a new methodology, the so called "Structural" VAR analysis, developed...

The aim of this paper is to verify the hypothesis of money neutrality in the Italian experience. After a critical overview of the traditional techniques employed to verify this hypothesis, cointegration technique is used to verify: long-run neutrality, weak evidence of long-run superneutrality...

In this paper we use the BDS test developed by Brock-Dechert-Scheinkman (1987) to investigate whether ARMA Models for the US real GNP generate i.i.d. residuals. The second step,after reviewing some results from Brock-Sayer (1988) and Scheinkman-LeBaron (1989), SL, we will use a different kind of...