David Hirshleifer is Merage Chair and Distinguished Professor of Finance at the Merage School of Business, University of California-Irvine. He is a Fellow and former president of the American Finance Association. He currently serves as co-editor of the Journal of Financial Economics, and has served as Executive Editor of the Review of Financial Studies, director of the American and Western Finance Associations, and co-editor and associate editor at leading finance, economics, and business journals. In his Presidential Address to the American Finance Association, he argues for an emerging paradigm, social economics, and finance, which studies how biases in the social transmission of ideas, information, and behavior affect markets and asset prices. His research interests include behavioral economics and finance, and other topics in the investments and corporate finance fields. His papers have won various research awards, including the Smith Breeden Award for outstanding paper in the Journal of Finance. He has been keynote or plenary speaker at many conferences internationally. He was previously on the faculties of UCLA, University of Michigan, and Ohio State University, and he received his Ph.D. from the University of Chicago. In his ample spare time, he composes classical music and sight-reads on the piano.