His research interests are in law and economics, institutional economics and microeconomic theory. His current research focuses on welfare level of the institutional harmonization, vagueness of law, and the relationship between social norms and law. Andrzej received his Ph.D. from European University Institute in Florence in 1996. He also holds an M.A. from Central European University (1992). Before coming to CEU, he worked at the University of Liverpool, and in Wroclaw University of Economics.