... Leadership necessarily is included in the discussion of each topic in this series. Topics that specifically address influencing groups include business structure, continuous improvement, and ... the terms Dominance, Influence, Steadiness and Compliance, hence DISC. All people exhibit all four behavioral factors in varying degrees of intensity. - W.M. Marston Since the 1980’s ... and interactions is in the context of a common control system model, used to define interactions of physical systems in a technical and medical world. Leadership is the process of influencing...