Published online by Cambridge University Press: 01 January 2025
The topological concepts allow us to assign individuals and goals to certain spatial regions. They allow us to designate what locomotions are possible for an individual and what regions must be traversed in attaining a definite goal. But the topological concepts alone tell us nothing of the actual locomotions performed in psychological activities. So far we have seen that the position of the individual at the start of the psychological activity may be defined in reference to this. Psychological activities may be ordered to locomotions. The individual in this sense has the character of a thing. The space through which the locomotion occurs has the properties of a medium. (Cf. Heider (10). In physical problems where the field construct is used, one may make this same distinction. Bodies falling in the earth’s gravitational field have the properties of things, while the atmosphere is to be characterized as a medium. Similarly in the electro-static field, the isolated conductors have the properties of things and the field has those of a medium.
Such dynamic terms have been frequently used by some sociologists and psychologists, usually without precise definition and without the realization that they represent theoretical constructs. It is houed that the field-theoretical concepts will not be confused with these others.