Views on ways the U.S. tax code might be used to stimulate investment in research and development were presented at this hearing. Witnesses represented industry and universities and included experts on how tax policy impacts scientific research and development. The document contains testimonies and supporting documentation from the following persons: Judith S. Liebman, Vice Chancellor for Research and Dean of the Graduate School, University of Illinois at Urbana-Champaign, Illinois; Jules B. Lapidus, Director, Council of Graduate Schools, Washington, D.C.; Jerry D. Caulder, President, Mycogen Corporation, San Diego, California; John M. Swihart, President, National Center for Advanced Technologies, Washington, D.C.; Bill N. Poulos, Government Affairs Office, Apple Computer, Inc., Washington, D.C.; Robert Z. Lawrence, Senior Fellow in Economics, Brookings Institution, Washington, D.C.; Robert Eisner, Professor of Economics, Northwestern University, Evanston, Illinois; E. Allen Womack, Jr., Vice President of Research and Development Division, Babcock & Wilcox, Alliance, Ohio; and Stuart E. Eizenstat, Counsel to the Council on Competitiveness and the Council on Research and Technology, Washington, D.C. An appendix contains a copy of two parts of a publication of the Aerospace Industries Association of America titled "Key Technologies for the 1990s." The publication is an industry study of high-leverage, enabling aerospace technologies and includes four "roadmaps" or procedural guidelines to attain them. (DB)