%A Paul Franceschi %O updated version %T An Analytic View of Delusion %X The present article proposes a logical account of delusions, which are regarded as conclusions resulting from fallacious arguments. This leads to distinguish between primary, secondary, ..., n-ary types of delusional arguments. Examples of delusional arguments leading to delusion of reference, delusion of influence, thought-broadcasting delusion and delusion of grandeur are described and then analysed. This suggests finally a way susceptible of improving the efficiency of cognitive therapy for delusions. %D 2003 %K cognitive therapy, delusion, psychosis, fallacy %L cogprints2845