Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
There is now a substantial body of evidence that suggests business cycles are asymmetric. However, the evidence has been accumulated using a wide array of statistical techniques and, consequently, is based on various definitions of asymmetry. This paper examines several parametric models that have been used to study asymmetries in real GNP. Although these models capture asymmetries in very different ways, their dynamic properties are remarkably similar. © 1997 by the President and Fellows of Harvard College and the Massachusetts Institute of Technology