Quantitative techniques of content analysis were used on documentary and mass communication material from Communist China as a means of identifying and accounting for social, political, and economic change in that society. Articles from "The People's Daily" and the "China Youth Post," radio dispatches, wall posters, terms, and slogans were coded manually, according to a systematically constructed scheme. Analysis was done by a high-speed computer. The technique uncovered a new approach to the study of Communist China through the rise and fall of its social movements. An analysis of changes in leadership and organization in the area of China studied was also made possible by this method of inquiry. These results suggest that the method used in the study may be a useful one in the study of social structures, mass communications, and the relationship between the press and society. A bibliography is appended. (Author/JY)