Degree in Physics and History of Tech., Yale College; PhD, Economics Dept, Harvard. Formerly: exp. in tech. innovation and public policy, Brookings Institution; public-private task force in Chicago, US gov. Currently, Jacob H. Schiff Prof. of Investment Banking, Harvard Business School. Research on structure and role of venture capital and private equity orgs; examines tech. innovation & how firms respond to changing public policies; co-directs Nat'l Bureau of Economic Research's Productivity, Research, & Innovation Program and serves as co-editor of its publication, Innovation Policy and the Economy; teaches course on entrepreneurship in Owners Presidents Managers Program; course on private equity. Founder, Private Capital Research Institute.