We study hypotheses testing in the presence of a possibly singular covariance matrix. We propose an alternative way to handle possible non-regularity in a covariance matrix of a Wald test, using the identity matrix as the weighting matrix when calculating the quadratic form. The resulting test...

In this paper we consider several modified wild bootstrap methods that, additionally to heteroskedasticity, can take dependence into account. The modified wild bootstrap methods are shown to correctly replicate an invariance principle for multivariate time series that are characterized by...

We discuss how to test consistently the specification of an ordereddiscrete choice model. Two approaches are considered: tests based onconditional moment restrictions and tests based on comparisons betweenparametric and nonparametric estimations. Following these approaches,various statistics are...

Most panel data studies of the predictability of returns presume that the cross-sectional units are independent, an assumption that is not realistic. As a response to this, the current paper develops block bootstrap-based panel predictability tests that are valid under very general conditions....

This paper describes an improved approach for (a) the estimation of the mean expected hourly global solar radiation I(h;nj), for any hour h of a day nj of the year, at any site, and (b) the estimation of stochastically fluctuating I(h;nj) values, based on only one morning measurement of a day....

This paper uses Australian data from the Negotiating the Life Course Project 1997 to investigate the impact of marriage on men’s and women’s earnings. We extend earlier earnings research and investigate whether the effect of marriage is constant for men and women at different points on the...

In the last few years several research studies have challenged the traditional weak-form efficiency tests of the stock market. These studies suggested an alternative to the random walk model, containing temporary and permanent components. If stocks follow such a model then the traditional tests,...