Abstract
A process model of concept development is proposed as a means of understanding the mind body problem. This paper reviews some definitions and views of mind, reiterates Karl Popper's description of the development of scientific as compared to essentialist methods of concept definition, compares the development of physical and psychological concepts, notes an apparent illogic of the mind and body issue, and discusses a range of psychological theories in relation to this process model, that is, Skinner's behavior view, to Pribram's presentation of cognitive theory, to Epstein's theory of the self concept, and to existentialistic views. In terms of meaning and usefulness, mind and behavioral concepts appear to evolve in the same manner