First Author:   Jahyeong Koo Federal Reserve Bank of Dallas jahyeong.koo@dal.frb.org   Research Department, Federal Reserve Bank of Dallas, 2200 N. Pearl St. Dallas, 75201   214-922-5179(Phone) 214-922-5179(Fax) http://www.dallasfed.org Second Author: Paul A. Johnson Vassar College pajohnson@vassar.edu   124 Raymond Avenue #708 Poughkeepsie, 12604-0708   845-437-7395(Phone)   http://http://irving.vassar.edu/faculty/pj/pj.htm