This paper develops a wavelet (spectral) approach to test the presence of a unit root in a stochastic process. The wavelet approach is appealing, since it is based directly on the different behavior of the spectra of a unit root process and that of a short memory stationary process. By...

We estabilsh the relationships between certain Bayesian and classical approaches to instrumental variables regression. We determine the form of priors that lead to posteriors for structural paameters that have similar properties as classical 2SLS and LIML and in doing so provide some new insight...

Deconvolving kernel estimators when noise is Gaussian entail heavy calculations. In order to obtain the density estimates numerical evaluation of a specific integral is needed. This work proposes an approximation to the deconvolving kernel which simplifies considerably calculations by avoiding...

This paper develops a new test for speculative bubbles, which is applied to data for the Japanese yen, the German mark and the Canadian dollar exchange rates from 1977 to 1991. The test assumes that bubbles display aparticular kind of regime-switching behaviour, which is shown to imply...

There are both positive and negative aspects to liberalisation policies. Liberalisation policies are no less important than any other kind of economic policies, and so it can only be healthy that what was formerly an obscure and technocratic process has moved to centre-stage politically....

The significance of stability of P.C.I. (Price consumer index) is reported in the situation of economy in which the price consumer index does not present tendencies of important change so much to inflation,- as down,- deflation. This is also the aim of E.E. (European Union), to maintain in a...

This paper establishes a link between a countries economic performance as measured by Gross National Product (GNP) and a compound measure of Transparency, Corruption Perceptions Index (CPI), and (TI 2002). CPI is a measurement that should provide an indication as to a countries reputation in the...