Dialectical/Dialectics: In its simplest terms, dialectics is the study of the norms of reasonable interpersonal or interactive argumentation. It is the study of the argumentation in which the roles of proponent and of opponent of a point of view are assumed and various goals of their interactive communication are considered. Argumentation is dialectical by virtue of being an interaction between contending points of view.

Source: What is Good? What is Bad? The Value of All Values across Time, Place and Theories’ by John McMurtry, Philosophy and World Problems, Volume I-III, UNESCO in partnership with Encyclopedia of Life Support Systems: Oxford, 2004-11.