Dr. Don R. Hansen is Professor Emeritus of Oklahoma State University. He has an undergraduate degree in mathematics from Brigham Young University. He received his Ph.D. from the University of Arizona in 1977. Dr. Hansen has published articles in both accounting and engineering journals, including The Accounting Review, The Journal of Management Accounting Research, Accounting Organizations and Society, Accounting Horizons, and IIE Transactions. He has served on the editorial board of The Accounting Review. His outside interests include family, church activities, reading, movies, and watching sports.