In this paper, the authors estimate the hazard function for firms that are targets in unsolicited tender offers. The data support a Weibull-gamma specification and imply a hazard rate that increases sharply in the initial period following the bid announcement, after which it declines steadily....

Different versions of the score test for neglected heterogeneity for a right censored exponential model are analyzed. These tests depend on how the information matrix is estimated. A test based on the theoretical information matrix is derived that is shown to outperform all the other tests....

There is a general consensus that student performance at all levels has been deteriorating. Despite numerous attempts by researchers to link school expenditures with student performance, a clear relationship does not exist. Since a number of difficulties plague earlier studies, this paper...

Recent studies have documented the importance of asymmetry and tail-fatness of returns on portfolio-choice, asset-pricing, value-at-risk and option-valuation models. This article explores the nature of skewness and elongation in daily Exchange-traded Fund (ETF) return distributions using g, h...

In this paper, tests for neglected heterogeneity and functional form misspecification of some commonly used parametric distributions are derived within a heterogeneous generalized gamma model. It is argued that the conventional test of heterogeneity may not be valid when the underlying hazard...

We examine a claim in the popular press that Goldman Sachs Inc was largely responsible for causing and profiting from various financial crises over the years. We revisit our sample of high-tech IPOs launched during the dotcom bubble of the late 1990s. We find that based on the aftermarket price...