[Language in schizophrenic patients]

The author tries to analyze the results of research on schizophrenics language during the last thirty years. The almost permanent contradictions of these results leads the author to the conclusion that there is no evidence for a basic disturbance in schizophrenic language. Two hypothesis are proposed to explain the contradictory results 1) the exclusively clinical definition of schizophrenia is of minimal utility as a frame-work for psychometric and linguistic research programs. 2) psychometric and linguistic tests seem to have no reliability to elucidate a phenomenea as complex as the verbal expression of the schizophrenic.