My dissertation has three chapters in econometrics. The first chapter, coauthored with Kenneth A. Couch, contains a proof that under one testable condition a measure of economic mobility formed by the ratio of permanent to total variance employing the methods of Gottschalk and Moffitt (1994) is...

This paper investigates the relationship between industrial diversification and firm valuation in a sample of 816 publicly listed firms in China. It contributes to the literature in three ways. First, it is one of the first studies of diversification and firm value in an emerging market...