Charles Wolf Jr. was a senior economic advisor at the RAND Corporation. He was also a senior research fellow at the Hoover Institution at Stanford University and was on the advisory board of the Center for International Business and Economic Research at the UCLA Anderson School of Management. He was a board member of Capital Income Builder and of Capital World Growth and Income, Inc., and a member of the American Economic Association, the Econometric Society, the Council on Foreign Relations, and the International Institute for Strategic Studies in London. He is noted for predicting the economic collapse of the Soviet Union in the 1980s, for downplaying fears that Japan would overtake the United States, and for unsuccessfully demanding the resignation of Daniel Ellsberg two years before Ellsberg leaked the Pentagon Papers.