Affiliation: | 1. Department of Economics, Bentley University, 175 Forest Street, Waltham, MA 02452, USA;2. Research Division, Federal Reserve Bank of St. Louis, P.O. Box 442, St. Louis, MO 63166, USA;3. Department of Economics and Finance, University of North Carolina at Wilmington, 601 South College Road, Wilmington, NC 28403, USA |