This article measures efficiency of the top 50 business schools in the United States in 2006, using the Data Envelopment Analysis (DEA) method. We use peer assessment (to represent school quality) and average Graduate Management Admission Test (GMAT) scores (to represent student ability) as...

This article tests economies of scale and economies of scope for the property-casualty insurance companies in Japan. We fit a composite cost function to a set of Japanese firms over the period from 1980 to 1995 and employ an error components model. Our main findings are as follows. First,...