Professor and Chairman of the Strategy and Entrepreneurship Department at the Edwin L. Cox School of Business at Southern Methodist University. He received his BA from Yale University and an MBA and PhD from the Wharton School, University of Pennsylvania. Dr. Walker has previously taught at the Sloan School, MIT; at the Wharton School, University of Pennsylvania; and at Yale University. The author of numerous articles, he is on the editorial boards of Administrative Science Quarterly and Strategic Organization. He has received several grants from the National Science Foundation.