Prof. Seif is Professor of Economics at Imam University, Saudi Arabia. He is the author of over 35 research papers, discussion papers and encyclopedia entries and Editor of the journal Review of Islamic Economics. Seif received his PHD at the University of Edinburgh in Economics. Other qualifications include an MSc in Statistics from Glasgow University and a BSc in Economics and Statistics from Khartoum University. Seif’s main research interests are Islamic financial markets, risk-return optimality of interest free finance and economic methodology. The Islamic Development Bank awarded Prof. Dr. Seif Ibrahim Tag el-Din as the winner of the IDB Prize in Islamic Economics for the year 2015 in recognition of the important role he played in advancing the cause of Islamic economics. His research appears in various journals including Journal of King Abdulaziz University, Kyoto Bulletin of Islamic Area Studies, IIUM Journal of Economics & Management, and Thunderbird International Business Review.