First Author:   Baris K. Yörük Boston College yoruk@bc.edu   Department of Economics, Boston College, 140 Commonwealth Avenue Chestnut Hill, 02467, USA   617-552-3670(Phone) 617-552-3670(Fax) Second Author: Osman Zaim Bilkent University zaim@bilkent.edu.tr   Department of Economics, Bilkent University Ankara, 06800, Turkey