The functional outcomes of psychosis: a plurality of causal factors irreducible to naturalistic approaches.

The main causal factors of the functional outcomes of schizophrenia are not only the residual symptoms nor the cognitive deficits related to the disease. Other factors should be taken into account, such as motivational factors, related to the efficacy or what is at stake in recognition, or relational factors related to the social competence) which are not liable to a naturalist approach. The complementarily of naturalist approaches and non naturalist approaches is required by the pluridimensionality of the expressions of the disease as well as of its functional outcomes. Habermas suggests that one of the limits of naturalism could be related to the necessary socialisation of human cognition, to the extent that the dependency of the neonate implies from the outset an interactional development of the cognition.