In the stochastic frontier model, we extend the multivariate probability statements of Horrace (J Econom, 126:335–354, <CitationRef CitationID="CR22">2005</CitationRef>) to calculate the conditional probability that a firm is any particular efficiency rank in the sample. From this, we construct the conditional expected efficiency rank...</citationref>

The truncated (below zero) normal distribution is considered. Some existing results are surveyed, and a recursive moment formula is used to derive the first four central moments in terms of the mean and variance of the underlying normal and in terms of lower moments of the truncated...

A new gender wage gap decomposition methodology is introduced, which does not suffer from identification problems caused by unobserved nondiscriminatory wage structure. The methodology is used to measure the relative size of Korean gender wage gaps, from 1994 to 2000 across industries,...

We develop a flexible test for changes in the SES-mortality gradient over time that directly accounts for changes in the distribution of education, the most commonly used marker of SES. We implement the test for the period between 1984 and 2006 using microdata from the Census, CPS, and NHIS...