Industry concentration measures calculated with Compustat data, which cover only the public firms in an industry, are poor proxies for actual industry concentration. These measures have correlations of only 13% with the corresponding U.S. Census measures, which are based on all public and...

Dual production specifications derived under certainty are typically randomized for econometric purposes with error specifications. This article shows that such approaches can cause integrability conditions to fail. In particular, if errors in input demands represent errors in optimization that...

Variation in household survey design and implementation is used to obtain evidence of nonrandom measurement error in recall surveys of household expenditure. These surveys, which are used especially in developing countries, appear to have measurement errors in food expenditures and in food...

Survey designs for producing population prevalence estimates, such as abortion rates, need to consider multiple sources of error. Abortion prevalence has been found to suffer from underreporting. Abortion rates can also be underestimated due to unit nonresponse. However, it is when these two...

The 1984 article by Frank Easterbrook, The Limits of Antitrust, has had considerable influence on antitrust enforcement and adjudication. Principally, Easterbrook focused on the things that antitrust could not do well. When antitrust's reach exceeds its grasp, it creates type I and type II...