“…Psychopathological and somatic items can be grouped under eight psychopathological syndromes as in Pietzcker et al (1983): of these, we have used those syndromes that in literature are more often used and significantly associated to clinical diagnoses, namely depressive, positive (paranoid-hallucinatory), negative (apathetic) and somatic (autonomic) syndromes. Positive and negative syndromes have already been shown to be structural psychopathological dimensions in non-affective psychoses (Cuesta & Peralta, 2001) and in first-episode psychoses (Cuesta, Peralta, Gil & Artamendi, 2003); depressive syndrome, along with negative syndrome, is very pertinent in the assessment of depressive disorders (Pietzcker & Gebhardt, 1983), and it has been used in several studies on depressive and other common mental disorders (Barnow, Linden, Lucht & Freyberger, 2002; Diefenbacher & Heim, 1994; Möller-Leimkühler, Bottlender, Strauss & Rutz, 2004), as well as somatic syndrome (Diefenbacher & Heim, 1994; Reischies, von Spiess, & Stieglitz, 1990). Thus, we examined all the 43 psychopathological and somatic items that are included in these four syndromes, testing their categorical correlation and their dimensional distribution in diagnostic clusters.…”