Measuring an individual's human capital at a point in time as the present actuarial value of expected net lifetime earnings has a lengthy history. Calculating such measures requires accurate estimates of worklife expectancy. Here, worklife estimates for men and women in the USA categorized by...

The concepts of an environmental Gini coefficient along with a measure of ''pollution elasticity'' are introduced and used to analyze the distribution of pollution across U.S. states from 1988 -- 1996. The special properties of the Gini coefficient allow one to decompose overall pollution...

Researchers in economics and other disciplines are often interested in the causal effect of a binary treatment on outcomes. Econometric methods used to estimate such effects are divided into one of two strands depending on whether they require the conditional independence assumption (i.e.,...