Every major feature of Sullivan’s theory reflects his shift from Freud’s drive/structure principles to relational/structure premises. The basic unit in classical theory is the individual psyche, and Freud’s rich and incisive theorizing is framed by that focus. What are the events taking place within the mind? What is the ebb and flow of internal dynamic processes? Relations with others are not ignored, but interpreted in terms of, in some sense reduced to, internal mental events vis-a-vis internally arising, drive-related process. Past relations with others are contained in psychic structures; they have become absorbed into and function as forces within the individual psyche. Current relations with others, including the analytic relationship, are understood as transferential reflections of internal processes, an occasion for the projection of internal events and struggles.
The basic units in Sullivan’s interpersonal theory are the interpersonal field and the relational configurations that derive from it. The individual psyche, in this view, is a part and reflection of a larger whole, and is inconceivable outside of a social matrix. To grasp the nature of experience one must consider it within that environing medium . . .
The very stuff of experience, the ingredients of individual functioning is composed of relations with others, past and present, real and imagined. The separation of a “personality” from its network of interpersonal configurations is merely a verbal trick, an art of “perverted ingenuity” (1930, p. 258). The human organism, Sullivan stresses over and over, can only be grasped within the “organism-environment complex” and is therefore incapable of “definitive description in isolation” (1950a, p. 220). Personality, or the patterning of interpersonal situations, develops from and is composed of relations with others, and is made manifest only in the context of an interpersonal relationship: “everything that can be found in the human mind has been put there by interpersonal relations, excepting only the capabilities to receive and elaborate the relevant experiences. This statement is also intended to be the antithesis of any doctrine of human instincts” (1950b, p. 302).
The distinction between the drive/structure underpinnings of Freudian theory and the relational/structure underpinnings of Sullivanian theory concerns the basic constituents of experience, the difference between a theory of mind composed of drive-derivatives and a theory of mind composed of relational configurations.
Jay Greenberg and Stephen Mitchell – Object Relations in Psychoanalytic Theory p.100