Amounting number of studies have shown striking relationships between mass communication development and various economic, political and social aspects of national growth. Although these studies generally have been based on available data from countries throughout the world, similar relationships also can be found within regional groups of countries. Among the twenty Latin American countries, we find newspaper circulation per capita correlated .89 with urbanization, .82 with literacy, .80 with per capital income, and a negative .88 with percentage of population employed in agriculture.
Such studies, of course, do not establish causal relations. Is mass communication merely a reflection of other more basic factors of development such as urbanization and industrialization, literacy and political participation? Or does mass communication play a functional role in the development process: can the communication of facts and opinions through the mass media actually influence people to move to the cities, take up new skills, learn to read and write, and become involved in politics?