1. Associate Professor, AGC-Paul S. Roel Chair of Construction Engineering and Management, Dept. of Civil and Environmental Engineering, San Diego State Univ., San Diego, CA 92182-1324. E-mail: kwalsh@mail.sdsu.edu
2. Professor of Management, Ford Honors Fellow, W.P. Carey School of Business, Arizona State Univ., Tempe, AZ, 85287-4006. E-mail: james.hershauer@asu.edu
3. Professor, Engineering and Project Management Program, Civil and Environmental Engineering Dept., Univ. of California at Berkeley, 215-A McLaughlin Hall, Berkeley, CA, 94720-1712. E-mail: tommelein@ce.berkeley.edu
4. Former Research Assistant, Del E. Webb School of Construction, Arizona State Univ., Mail Code 0204, Tempe, AZ 85287-4706. E-mail: tobi.walsh@adelphia.net