Increased sense of identity in delusional disorders.

Language, which is unique in each subject, can reflect how a patient copes with disease. The method ALCESTE used here made it possible at the same time to analyse the subject's verbal behavior and speech patterns at several levels. The present study was designed to analyse during a 3-mo. period the language production of subjects with paranoia exhibiting delusional disorder (nonbizarre delusions without any hallucination) of imaginative subtype. The subjects produced very specific speech without any semantic or syntactic impairment and disruption in language or thinking processes, but with a poverty of speech content. The main feature of the study was the analysis of the underlying syntactic processes showing that the tested patients presented a "hard" sense of identity: the patient found always a strong place for himself among the various types of discourse whatever their topics.