title: Relationship between the Rorschach Perceptual Thinking Index (PTI) and the Positive and Negative Syndrome Scale (PANSS) in psychotic patients: a validity study.
abstract: The aim of this study is to demonstrate the validity of the Rorschach Perceptual Thinking Index (PTI) in the assessment of reality testing in patients with psychosis. We evaluated the relationship between the PTI criteria and the Positive and Negative Syndrome Scale (PANSS) scores in 98 psychotic disorder affected patients. Thirty four were evaluated during the acute episode (AP) and 64 were chronically treated and stable (CP). The PANSS positive score resulted significantly higher in AP than in CP group, but no significant difference was found in the PTI score. The PTI positively correlated with the PANSS total score. The PTI1 and PTI2 criteria significantly correlated with the PANSS negative score, the PTI4 and PTI5 with the positive. The Rorschach variable X-% significantly correlated with the negative symptoms; the WSum6 with thought disorders; and the M- with delusions. PTI score, X-% and WSum6 predicted impaired judgment and insight. These results suggest that PTI is a valid instrument to assess impairment in reality testing, regardless of the patient׳s current psychiatric presentation. The presence of conceptual disorganization, delusions, lack of judgment and insight don׳t have effects on the PTI, supporting its strength as an assessment tool for psychotic disorders.
authors.affiliation: NESMOS Department (Neurosciences, Mental Health and Sensory Organs), Sant'Andrea Hospital, Faculty of Medicine and Psychology, Sapienza University of Rome, Italy.
authors.forename: Mario
authors.initials: M
authors.lastname: Biagiarelli
authors.affiliation: NESMOS Department (Neurosciences, Mental Health and Sensory Organs), Sant'Andrea Hospital, Faculty of Medicine and Psychology, Sapienza University of Rome, Italy.
authors.forename: Paolo
authors.initials: P
authors.lastname: Roma
authors.affiliation: NESMOS Department (Neurosciences, Mental Health and Sensory Organs), Sant'Andrea Hospital, Faculty of Medicine and Psychology, Sapienza University of Rome, Italy.
authors.forename: Anna
authors.initials: A
authors.lastname: Comparelli
authors.affiliation: NESMOS Department (Neurosciences, Mental Health and Sensory Organs), Sant'Andrea Hospital, Faculty of Medicine and Psychology, Sapienza University of Rome, Italy.
authors.forename: Maria Paola
authors.initials: MP
authors.lastname: Andraos
authors.affiliation: NESMOS Department (Neurosciences, Mental Health and Sensory Organs), Sant'Andrea Hospital, Faculty of Medicine and Psychology, Sapienza University of Rome, Italy.
authors.forename: Ileana
authors.initials: I
authors.lastname: Di Pomponio
authors.affiliation: NESMOS Department (Neurosciences, Mental Health and Sensory Organs), Sant'Andrea Hospital, Faculty of Medicine and Psychology, Sapienza University of Rome, Italy.
authors.forename: Valentina
authors.initials: V
authors.lastname: Corigliano
authors.affiliation: NESMOS Department (Neurosciences, Mental Health and Sensory Organs), Sant'Andrea Hospital, Faculty of Medicine and Psychology, Sapienza University of Rome, Italy; McLean Hospital, Belmont, MA, USA. Electronic address: martina.curto@gmail.com.
authors.forename: Martina
authors.initials: M
authors.lastname: Curto
authors.affiliation: McLean Hospital, Belmont, MA, USA.
authors.forename: Grace Allison
authors.initials: GA
authors.lastname: Masters
authors.affiliation: NESMOS Department (Neurosciences, Mental Health and Sensory Organs), Sant'Andrea Hospital, Faculty of Medicine and Psychology, Sapienza University of Rome, Italy.
authors.forename: Stefano
authors.initials: S
authors.lastname: Ferracuti
mesh_terms: D000293:Adolescent; D000328:Adult; D003702:Delusions / Q000523:psychology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011618:Psychotic Disorders / Q000523:psychology*; D011936:Reality Testing; D012392:Rorschach Test; D013850:Thinking; D055815:Young Adult
keywords: Impaired thinking; PANSS; PTI1–5; Psychosis; Reality testing; Rorschach