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"Green et al. Paranoid Thoughts Scale-revised": Structural invariance and clinical utility of a brief version in schizophrenia.
- Source :
-
Journal of psychiatric research [J Psychiatr Res] 2023 Jul; Vol. 163, pp. 9-13. Date of Electronic Publication: 2023 May 10. - Publication Year :
- 2023
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Abstract
- Objective: Persecutory ideas are highly frequent in psychotic disorders and particularly in schizophrenia. Although several measures exist to assess persecutory ideas in both clinical and non-clinical samples, there is a need for brief and psychometrically sound measures to capture the multidimensional aspects of paranoia in people diagnosed with schizophrenia. Our aim was to validate a brief version of the revised Green et al., Paranoid Thoughts Scale (R-GPTS) in schizophrenia in order to minimize time-consuming assessment.<br />Methods: 100 individuals with schizophrenia and 72 non-clinical controls were recruited. We used the GPTS-8, a brief 8-item version of the R-GPTS recently developed and validated in the French general population. Psychometric properties of the scale were investigated including its factor structure, internal consistency, and convergent/divergent validities.<br />Results: Confirmatory factor analysis supported the original two-factor structure (social reference and persecution subscales) of the GPTS-8. The GPTS-8 was positively and moderately correlated with the Positive and Negative Syndrome Scale (PANSS) suspiciousness item indicating good internal consistency. Concerning divergent validity, no correlations were found between the GPTS-8 and the Montreal cognitive assessment (MoCA). Importantly patients with schizophrenia reported higher scores on the GTPS-8 than controls demonstrating its clinical validity.<br />Conclusions: The French GPTS 8-item brief scale-8 retains the psychometric strengths of the R-GPTS in schizophrenia with relevant clinical validity. The GPTS-8 can consequently be used as a short and quick measure of paranoid ideations in individuals with a diagnosis of schizophrenia.<br />Competing Interests: Declaration of competing interest Each author confirmed that there is no conflict of interest between the author and the study.<br /> (Copyright © 2023 Elsevier Ltd. All rights reserved.)
Details
- Language :
- English
- ISSN :
- 1879-1379
- Volume :
- 163
- Database :
- MEDLINE
- Journal :
- Journal of psychiatric research
- Publication Type :
- Academic Journal
- Accession number :
- 37196518
- Full Text :
- https://doi.org/10.1016/j.jpsychires.2023.05.036