, in the difficulty of obtaining what is viewed as 'hard' evidence in support of some of the central claims. For example … only kind of evidence accepted by much of the profession is the testing of econometric hypotheses generated from formal … models. The sort of evidence found in persuasive sources such as DeLong's 'Cornucopia' consists of historical examples and …

I address the topic of pragmatic methodology as a practitioner in applied microeconomics who has been working in the … still nascent field of the 'economics of organization'. My purpose is both to make explicit the methodology out of which … will develop in the process, maybe even a consensus. At a minimum, it will be useful to have each implicit methodology made …

unobserved teacher quality is the same for all students is rejected by the data. We also present evidence that No Child Left …