On the other hand, we have had, in the description of the crowd and the public by Le Bon, Tarde, Sighele, and their successors, the beginnings of a study of collective behavior and "corporate action." In these two points of view we seem to have again the contrast and the opposition, already referred to, between the nominalistic and realistic conceptions of society. Nominalism represented by social psychology emphasizes, or seems to emphasize, the independence of the individual. Realism, represented by collective psychology, emphasizes the control of the group over the individual, of the whole over the part.

While it is true that society has this double aspect, the individual and the collective, it is the assumption of this volume that the touchstone of society, the thing that distinguishes a mere collection of individuals from a society is not like-mindedness, but corporate action. We may apply the term social to any group of individuals which is capable of consistent action, that is to say, action, consciously or unconsciously, directed to a common end. This existence of a common end is perhaps all that can be legitimately included in the conception "organic" as applied to society.

From this point of view social control is the central fact and the central problem of society. Just as psychology may be regarded as an account of the manner in which the individual organism, as a whole, exercises control over its parts or rather of the manner in which the parts co-operate together to carry on the corporate existence of the whole, so sociology, speaking strictly, is a point of view and a method for investigating the processes by which individuals are inducted into and induced to co-operate in some sort of permanent corporate existence which we call society.

To put this emphasis on corporate action is not to overlook the fact that through this corporate action the individual member of society is largely formed, not to say created. It recognized, however, that if corporate action tends to make of the individual an instrument, as well as an organic part, of the social group, it does not do this by making him "like" merely; it may do so by making him "different." The division of labor, in making possible an ever larger and wider co-operation among men, has indirectly multiplied individual diversities. What like-mindedness must eventually mean, if it is to mean anything, is the existence of so much of a consensus among the individuals of a group as will permit the group to act. This, then, is what is meant here by society, the social organism and the social group.

Sociology, so far as it can be regarded as a fundamental science and not mere congeries of social-welfare programs and practices, may be described as the science of collective behavior. With this definition it is possible to indicate in a general and schematic way its relation to the other social sciences.

Historically, sociology has had its origin in history. History has been and is the great mother science of all the social sciences. Of history it may be said nothing human is foreign to it. Anthropology, ethnology, folklore, and archaeology have grown up largely, if not wholly, to complete the task which history began and answer the questions which historical investigation first raised. In history and the sciences associated with it, i.e., ethnology, folklore, and archaeology, we have the concrete records of that human nature and experience which sociology has sought to explain. In the same sense that history is the concrete, sociology is the abstract, science of human experience and human nature.

Fig. 1

On the other hand, the technical (applied) social sciences, that is, politics, education, social service, and economics—so far as economics may be regarded as the science of business—are related to sociology in a different way. They are, to a greater or lesser extent, applications of principles which it is the business of sociology and of psychology to deal with explicitly. In so far as this is true, sociology may be regarded as fundamental to the other social sciences.