The aim of discourse analysis is to reveal the ontological and epistemological premises which are embedded in language, and which allows a statement to be understood as rational or interpreted as meaningful. Discourse analysis investigates whether - in statements or texts - it is possible to establish any regularity in the objects which are discussed; the subjects designated as actors; the causal relations claimed to exist between objects (explanans) and subjects (explanadum); but also the expected outcome of subjects trying to influence objects; the goal of their action; and finally the time dimension by which these relations are framed. Discourses thus comprise the underlying conditions for a statement to be interpreted as meaningful and rational. At the same time, discourse analysis is the study of rationality and how it is expressed in a particular historical context. Discourse analysis is part of the Constructivist (or Social Constructivist) approach within the humanities and social sciences. It assumes that basic assumptions with regard to being, self and the world are constructed by individuals living in a historical and cultural context which is produced and reproduced by their speech acts.