Professor of economics at George Mason University. He holds the Bartley J. Madden Chair in Economics at the Mercatus Center. Co-founder of Marginal Revolution University: An Online Platform for Learning Economics. Alex is the author of numerous academic papers in the fields of law and economics, criminology, regulatory policy, voting theory and other areas in political economy. He is co-author of Modern Principles of Economics and co-author of the Marginal Revolution economics blog.