The Florida Assessment and Diffusion System (FADS) represents a systematic approach to organizational change, emphasizing the interpersonal communication dimension of the change process. FADS encourages a systems approach to change, but is flexible enough to allow for procedural changes in response to specific user needs. The model assumes a client centered decision-making process which is facilitated by a highly skilled individual or group referred to as an agent. The major components of FADS are initiation, verification, problem solving, diffusion, evaluation, and documentation. Each of these components is based on a series of operationally related elements. For each element, process and output statements are provided. Finally, FADS attempts to redefine the concept of diffusion to incorporate both pre- and post-adoption decision-making in an interpersonal, client-oriented system. (Author/KS)