Considerable attention has been devoted in the past to the methodological issues involved in the measurement and explanation of economic growth. Following the method pioneered by Denison and applied by him to the United States and Western Europe, comparative studies have been made of various other countries; that for Japan is of special interest. The present paper extends the analysis to the Soviet Union. In order to preserve comparability, the analysis follows the Denison methodology exactly, and compares the results with those for the United States, Northwest Europe, and Japan.