We use parametric and nonparametric methods to estimate correlations between average control cost and three field-level characteristics—field size and delivered phosphorous per field and per acre—as proxies for economies of scale in controlling nonpoint pollution. We combine load...

This paper provides examples of both parametric and non-parametric tests for economies of scale in the control of non-point pollution. Because field-level control costs and control effectiveness are uncertain from the regulator's perspective (due to the existence of asymmetric information), we...

Using information from on-line graded assignments in an intermediate microeconomics course, we find that non-procrastinators (both early-starters and front-loaders) obtain higher scores than their dillydallying counterparts. We also find that while busier students tend to start their assignments...