The federal government now confronts considerable political pressure to add CO2 to the existing set of criteria air pollutants. As with current criteria pollutants, proposals call for control of CO2, assuming that the control of each of the three criteria pollutants is separable from the others....

Many production activities generate undesirable outputs in conjunction with the desirable outputs. In this paper we present the first estimates of a multiple-input, multiple-output directional distance function that relates good and bad inputs from home, school, and environment to good and bad...

We estimate a directional distance function to assess the impacts of multiple time-varying parent and child inputs on a cluster of jointly produced child outcomes for children aged 7 to 13 years. The directional distance function specification avoids several well-known empirical problems...

This paper uses a maximum likelihood procedure that accounts for unobserved heterogeneity in the sample to implement a preference-based model to assess factors that influence parents' likelihood of losing their composure and physically abusing their children. A basic supposition of the model is...

The preceding is a taxonomic discussion of some reasons why contingent market methods may often be a superior means of generating data with which to value non-market commodities. We have argued that economists have erred in viewing the situations these methods posit as necessarily fictional;...