Validation of the Eight-Item Paranoid Thoughts Scale (GPTS-8) in Tunisian Arab Adults

IF 2.5 3区医学 Q2 PSYCHIATRY

International Journal of Methods in Psychiatric Research Pub Date : 2025-10-17 DOI:10.1002/mpr.70039

Feten Fekih-Romdhane, Ons Ghorbel, Carlos Laranjeira, Majda Cheour, Frederic Harb, Souheil Hallit

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Abstract

Background

Growing research indicated that it is highly valuable and clinically beneficial to quantitatively measure and detect the potential presence of paranoid thinking. Among the various existing self-report instruments to measure paranoia, the Green et al. Paranoid Thoughts Scale (GPTS) was recommended as having the most well-defined, clearly articulated construct underlying its items, and the strongest psychometric qualities in general and clinical population samples. Yet, the psychometric performance of the GPTS remains unknown in the Arab language and culture. To address this gap, our study aimed to explore the psychometric properties of an Arabic translation of the shortest version of the scale (i.e., the GPTS-8).

Methods

A cross-sectional study was conducted. Data were collected during the period September 1st 2024 to January 31th 2025. A total of 552 Arabic-speaking general population adults from Tunisia aged 25.81 ± 4.86 years participated.

Results

Analyses provided support for a bidimensional model, with a first dimension referring to ideas of persecution and a second one corresponding to ideas of reference. The internal consistency reliability coefficients were high, with both Cronbach's alpha and McDonald's ω reported to be 0.83 for ideas of persecution and 0.83 for ideas of reference. Measurement invariance was established for both subscales, implying that the Arabic GPTS-8 measures the same underlying construct of paranoia in the same way across male and female respondents. Finally, paranoia scores correlated positively with psychotic experiences scores, indicating convergent validity, as well as with depression, anxiety and insomnia scores, supporting the concurrent validity of the scale.

Conclusion

By translating and validating GPTS-8 for the first time in Arabic, this study contributes to rendering the tool available to a broader array of clinicians and researchers who work with Arabic-speaking people. We believe the new Arabic version of the GPTS-8 will provide further encouragement to research and development in this yet-unexplored field among Arabic-speakers.

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八项偏执思想量表（GPTS-8）在突尼西亚阿拉伯成人中的验证

越来越多的研究表明，定量测量和检测偏执思维的潜在存在具有很高的价值和临床益处。在现有的各种测量偏执的自我报告工具中，格林等人。偏执狂思维量表（GPTS）被推荐为具有最明确的定义，清晰的结构，以及在一般和临床人群样本中最强的心理测量质量。然而，GPTS的心理测量性能在阿拉伯语言和文化中仍然未知。为了解决这一差距，我们的研究旨在探索最短版本量表（即GPTS-8）的阿拉伯语翻译的心理测量特性。方法采用横断面研究。数据收集时间为2024年9月1日至2025年1月31日。来自突尼斯的552名讲阿拉伯语的成年人（年龄25.81±4.86岁）参与了研究。结果分析支持了一个二维模型，第一个维度代表迫害观念，第二个维度对应参照观念。内部一致性信度系数很高，迫害观念的Cronbach's alpha和McDonald's ω均为0.83，参考观念的Cronbach's alpha和McDonald's ω均为0.83。两个子量表的测量不变性都被建立，这意味着阿拉伯语GPTS-8以相同的方式在男性和女性受访者中测量相同的偏执的潜在结构。最后，偏执得分与精神病经历得分呈正相关，表明收敛效度，与抑郁、焦虑和失眠得分呈正相关，支持量表的并发效度。通过首次翻译和验证阿拉伯语版本的GPTS-8，本研究有助于将该工具提供给更广泛的与阿拉伯语人群一起工作的临床医生和研究人员。我们认为，新的阿拉伯语版本的GPTS-8将进一步鼓励阿拉伯语国家在这一尚未开发的领域进行研究和开发。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Methods in Psychiatric Research 医学-精神病学

CiteScore

5.20

自引率

6.50%

发文量

审稿时长

>12 weeks

期刊介绍： The International Journal of Methods in Psychiatric Research (MPR) publishes high-standard original research of a technical, methodological, experimental and clinical nature, contributing to the theory, methodology, practice and evaluation of mental and behavioural disorders. The journal targets in particular detailed methodological and design papers from major national and international multicentre studies. There is a close working relationship with the US National Institute of Mental Health, the World Health Organisation (WHO) Diagnostic Instruments Committees, as well as several other European and international organisations. MPR aims to publish rapidly articles of highest methodological quality in such areas as epidemiology, biostatistics, generics, psychopharmacology, psychology and the neurosciences. Articles informing about innovative and critical methodological, statistical and clinical issues, including nosology, can be submitted as regular papers and brief reports. Reviews are only occasionally accepted. MPR seeks to monitor, discuss, influence and improve the standards of mental health and behavioral neuroscience research by providing a platform for rapid publication of outstanding contributions. As a quarterly journal MPR is a major source of information and ideas and is an important medium for students, clinicians and researchers in psychiatry, clinical psychology, epidemiology and the allied disciplines in the mental health field.