URL des Documents de travail : http://ces.univ-paris1.fr/cesdp/cesdp2015.htmlDocuments de travail du Centre d'Economie de la Sorbonne 2015.88 - ISSN : 1955-611XThe purpose of this contribution to the epistemology and history of recent macroeconomics is to construct a clear understanding of econometric methods and problems in New Classical macroeconomics. Most historical work have focused so far on theoretical or policy implication aspects of this research program set in motion by Robert Lucas in the early seventies. On the contrary, the empirical and econometric works of New Classical macroeconomics have received little attention. I focus especially on the contributions gathered in Rational Expectations and Econometric Practice, edited in 1...