He received his Ed.D. in adult education from the University of Georgia. His research interests include adult cognition and learning (transformative learning), nonformal education, and medical education. His work has appeared in Adult Education Quarterly, International Journal of Lifelong Education, Studies in the Education of Adults, and other scholarly journals. He recently published an edited book, Teaching for Change: Fostering Transformative Learning in the Classroom. He has been a coeditor of the Adult Education Quarterly since 2006 and an active member of the planning committee for several International Transformative Learning Conferences. Prior to joining the faculty at Penn State, he was a core faculty member at Antioch University for six years. Before his venture into higher education he worked for Eckerd Family Youth Alternatives as a training specialist in Clearwater, Florida.