Neuropsychology and attempts to model deficits in schizophrenic cognition. Frith’s model systematically admits that schizophrenics demonstrations come from a dysfonction about mecanisms and processes which are involved in initiative, monitoring and regulation of action. His contribution subscribes to neuropsychological perspective and is concerned with mental and cerebral processes association in the way that schizophrenics signs and symptoms rely to cerebral anomaly. We discuss this kind of epistemology and compare axioms it takes for granted with fonctionalism theory. Then as we look schizophrenia’s pragmatic approach into question we take care on aspects of methodological arguments and theoretical interpretations the author argues for ne...