The author lists the tasks necessary to overcome problems in development studies; (1) establish criteria of underdevelopment; (2) determine the internal obstacle co economic development; (3) define criteria for social development; (4) compile information on social values, hopes and aspirations; (5) formulate a strategy for development; (6) study the problems in planning forecasting; (7) study the relationship between International Relations and development, (a) what are the distinguishing characteristics of the Third World? (b) investigate the dynamics of structures, (c) detection of social forces, (d) study the importance of external factors. Prof. Balandier believes that sociology must be dynamic to keep pace with the everchanging forces of development. He suggests that the determining question in development studies should be, how can positive change in social, and economic systems be brought at least cost? He discusses the trends in development studies, categorized as the Normative approach, Structural approach, and Behavioral approach and concludes that a successful study of Development must, in part, integrate these conceptual approaches.