PhD, Yale University, 1964; MA, Yale University, 1957; BA, Swarthmore College, 1956 Wharton: 1993-present (named Deloitte and Touche Professor of Management, 1993; Co-Director, Reginald H. Jones Center for Management Policy, Strategy, and Organization, 1999-2007). Previous appointments: Yale University; University of Michigan; University of California, Berkeley Chief Economist, U.S. General Accounting Office, 1989-93; Research Economist, The RAND Corporation 1966-68, 1959-61; Staff Member, Council of Economic Advisers, 1961-62