Axel Ockenfels is Professor of Economics at the University of Cologne and Director of the Cologne Laboratory of Economic Research. His research focuses on behavioral and design economics. The goal of much of his recent research and applied work is to improve the performance of 'real world' markets and institutions, as well as to analyze and model individual strategies in negotiation and bidding. Ockenfels has published prominently in many research areas, including economics, business administration, information systems, psychology, and sociology. He received his diploma in economics from the University of Bonn, and both his Ph.D. and Habilitation from the University of Magdeburg. Before his current position, Ockenfels spent a couple of years at the Penn State University, Harvard University, and the Max Planck Institute of Economics in Jena. Ockenfels is a Member of the Berlin-Brandenburgische Academy of Sciences and of the Nordrhein Westfalian Academy of Sciences. In 2005 he received the Leibniz Prize of the German Science Foundation. Abdolkarim Sadrieh is Professor of Economics and Management at the University of Magdeburg and on the Scientific Board of the Magdeburg Laboratory for Experimental Economics. His research focuses on applications of game theory and experimental economics to a wide range of interaction design issues in management and economics. He has published prominently on the design of consumer and labor markets, supply-chain interaction, environmental decision-making, work incentives in organizations, and taxation. Sadrieh received his diploma and his Ph.D. in economics from the University of Bonn. Before his current position, Sadrieh was the Director of the Bonn Laboratory for Experimental Economics and the Director of the CentERlab at Tilburg University. Currently, he is the Vice President of the German Association for Experimental Economic Research (GfeW).