Innovations’ Origins: When, By Whom, and How are Radical Innovations Developed? Peter N. Golder* New York University Rachel Shacham New York University Debanjan Mitra University of Florida Marketing Science, 2009 The authors appreciate the valuable comments of Barry Bayus, Don Lehmann, Chris Moorman, Raji Srinivasan, Gerry Tellis and seminar participants at Duke, Emory, Illinois, Korea Advanced Institute of Science and Technology, NYU, Peking University, Shanghai Jiaotong University, Texas, Texas A&M, and Tsinghua University. * pgolder@stern.nyu.edu, 40 West 4 th St., Tisch 910, New York, NY 10012, 212-998-0542, fax: 212-995-4006.