Tags

Type your tag names separated by a space and hit enter

The validity of Psychosis Proneness Scales as vulnerability indicators in recent-onset schizophrenia patients.
Schizophr Res. 2008 Mar; 100(1-3):224-36.SR

Abstract

The Psychosis Proneness Scales developed by the Chapmans and colleagues [Chapman, J.P., Chapman, L.J., Kwapil, T.R. Scales for the measurement of schizotypy. In: Raine., A., Lencz, T., Mednick, S.A., (Eds.). Schizotypal Personality. New York: Cambridge University Press, 1995. pp. 79-109] are widely used to identify non-patient individuals who are hypothesized to possess heightened vulnerability to schizophrenia and related psychopathology. Yet surprisingly little is known about whether schizophrenia patients themselves show abnormalities on these scales across different clinical states, as would be expected for vulnerability indicators. Scores on four of the Psychosis Proneness Scales were evaluated at three assessment points over a 15-month period in healthy controls (n=54) and in recent-onset schizophrenia patients (n=72) who experienced symptom fluctuations across assessments. Patients showed steady elevations on the Physical Anhedonia Scale across time and clinical state, consistent with a stable vulnerability indicator. Patients had higher scores on the Perceptual Aberration and Magical Ideation Scales than controls throughout the follow-up period but scores also changed across clinical states, consistent with a mediating vulnerability indicator. Patients had higher scores on the Impulsive Non-Conformity Scale than controls only during a psychotic state, reflecting an episode indicator. The longitudinal characteristics of these scales in people who are actually diagnosed with schizophrenia provide key evidence for the validity of three commonly used psychometric indicators of vulnerability to psychosis.

Authors+Show Affiliations

Department of Psychiatry & Biobehavioral Sciences, University of California, Los Angeles, CA, USA. horan@ucla.eduNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, N.I.H., Extramural

Language

eng

PubMed ID

18221857

Citation

Horan, William P., et al. "The Validity of Psychosis Proneness Scales as Vulnerability Indicators in Recent-onset Schizophrenia Patients." Schizophrenia Research, vol. 100, no. 1-3, 2008, pp. 224-36.
Horan WP, Reise SP, Subotnik KL, et al. The validity of Psychosis Proneness Scales as vulnerability indicators in recent-onset schizophrenia patients. Schizophr Res. 2008;100(1-3):224-36.
Horan, W. P., Reise, S. P., Subotnik, K. L., Ventura, J., & Nuechterlein, K. H. (2008). The validity of Psychosis Proneness Scales as vulnerability indicators in recent-onset schizophrenia patients. Schizophrenia Research, 100(1-3), 224-36. https://doi.org/10.1016/j.schres.2007.12.469
Horan WP, et al. The Validity of Psychosis Proneness Scales as Vulnerability Indicators in Recent-onset Schizophrenia Patients. Schizophr Res. 2008;100(1-3):224-36. PubMed PMID: 18221857.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The validity of Psychosis Proneness Scales as vulnerability indicators in recent-onset schizophrenia patients. AU - Horan,William P, AU - Reise,Steven P, AU - Subotnik,Kenneth L, AU - Ventura,Joseph, AU - Nuechterlein,Keith H, Y1 - 2008/01/24/ PY - 2007/05/04/received PY - 2007/11/29/revised PY - 2007/12/06/accepted PY - 2008/1/29/pubmed PY - 2008/8/2/medline PY - 2008/1/29/entrez SP - 224 EP - 36 JF - Schizophrenia research JO - Schizophr Res VL - 100 IS - 1-3 N2 - The Psychosis Proneness Scales developed by the Chapmans and colleagues [Chapman, J.P., Chapman, L.J., Kwapil, T.R. Scales for the measurement of schizotypy. In: Raine., A., Lencz, T., Mednick, S.A., (Eds.). Schizotypal Personality. New York: Cambridge University Press, 1995. pp. 79-109] are widely used to identify non-patient individuals who are hypothesized to possess heightened vulnerability to schizophrenia and related psychopathology. Yet surprisingly little is known about whether schizophrenia patients themselves show abnormalities on these scales across different clinical states, as would be expected for vulnerability indicators. Scores on four of the Psychosis Proneness Scales were evaluated at three assessment points over a 15-month period in healthy controls (n=54) and in recent-onset schizophrenia patients (n=72) who experienced symptom fluctuations across assessments. Patients showed steady elevations on the Physical Anhedonia Scale across time and clinical state, consistent with a stable vulnerability indicator. Patients had higher scores on the Perceptual Aberration and Magical Ideation Scales than controls throughout the follow-up period but scores also changed across clinical states, consistent with a mediating vulnerability indicator. Patients had higher scores on the Impulsive Non-Conformity Scale than controls only during a psychotic state, reflecting an episode indicator. The longitudinal characteristics of these scales in people who are actually diagnosed with schizophrenia provide key evidence for the validity of three commonly used psychometric indicators of vulnerability to psychosis. SN - 0920-9964 UR - https://www.unboundmedicine.com/medline/citation/18221857/The_validity_of_Psychosis_Proneness_Scales_as_vulnerability_indicators_in_recent_onset_schizophrenia_patients_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0920-9964(07)01039-0 DB - PRIME DP - Unbound Medicine ER -