Social mobilization is a name given to an overall process of change, which happens to substantial parts of the population in countries which are moving from traditional to modern ways of life. It denotes a concept which brackets together a number of more specific processes of change, such as changes of residence, of occupation, of social setting, of face-to-face associates, of institutions, roles, and ways of acting, of experiences and expectations, and finally of personal memories, habits and needs, including the need for new patterns of group affiliation and new images of personal identity. Singly, and even more in their cumulative impact, these changes tend to influence and sometimes to transform political behavior.

The concept of social mobilization is not merely a short way of referring to the collection of changes just listed, including any extensions of this list. It implies that these processes tend to go together in certain historical situations and stages of economic development; that these situations are identifiable and recurrent, in their essentials, from one country to another; and that they are relevant for politics. Each of these points will be taken up in the course of this paper.

Social mobilization, let us repeat, is something that happens to large numbers of people in areas which undergo modernization, i.e., where advanced, non-traditional practices in culture, technology and economic life are introduced and accepted on a considerable scale. It is not identical, therefore, with this process of modernization as a whole, but it deals with one of its major aspects, or better, with a recurrent cluster among its consequences.