Measuring referentiality in psychiatric disorders: Psychometric properties of the Spanish version of the Ideas of Reference and Interview Scale (IRIS-S)

IF 1.5 4区医学 Q2 PSYCHIATRY

European Journal of Psychiatry Pub Date : 2025-10-01 Epub Date: 2025-10-23 DOI:10.1016/j.ejpsy.2025.100329

Isabel Argila-Plaza , Ana Aquino-Servín , María Ángeles García-León , Paola Fuentes-Claramonte , Núria Ramiro , Pilar Salgado-Pineda , Joan Soler-Vidal , María Llanos Torres , Amalia Guerrero-Pedraza , Manel Sánchez , Salvador Sarró , Raymond Salvador , Peter J McKenna , Ana Barajas , Edith Pomarol-Clotet

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引用次数: 0

Abstract

Background and objectives

Referentiality is a common symptom in psychotic and also some non-psychotic disorders, but there are few existing measures for assessing it. A recently developed detailed measure for this purpose is the Ideas of Reference Interview Scale (IRIS), which however has only been validated in a Chinese population of first episode psychosis patients.

Methods

We examined the reliability and validity of a Spanish version of the IRIS (IRIS-S) in 185 patients aged between 18 and 65 with schizophrenia or schizoaffective disorder.

Results

The IRIS-S showed internal consistency, with this being good or acceptable for the presence scale and its three subsidiary measures. Inter-rater reliability was good and test-retest reliability was also good, except for one subsidiary measure. Convergent reliability was demonstrated but was lower than expected.

Conclusion

The IRIS-S has acceptable psychometric properties when employed in patients with schizophrenia/schizoaffective disorder. Caution is necessary for its use outside psychotic disorders as it has not been examined in such populations.

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精神疾病的参照性测量：西班牙语版参考与访谈量表（IRIS-S）的心理测量特性

背景与目的参考性是精神障碍和一些非精神障碍的常见症状，但现有的评估方法很少。参考访谈量表（Ideas of Reference Interview Scale， IRIS）是最近开发的一种详细的测量方法，但它只在中国首发精神病患者中得到验证。方法我们对185例年龄在18 - 65岁的精神分裂症或分裂情感性障碍患者进行了西班牙语版IRIS （IRIS- s）的信度和效度检验。结果IRIS-S量表具有内部一致性，存在度量表及其三个辅助指标的一致性良好或可接受。量表间信度较好，重测信度也较好。证明了收敛可靠性，但低于预期。结论IRIS-S在精神分裂症/分裂情感性障碍患者中具有良好的心理测量特性。在精神疾病之外使用它是必要的，因为它还没有在这类人群中被检验过。

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

European Journal of Psychiatry PSYCHIATRY-

CiteScore

2.90

自引率

0.00%

发文量

审稿时长

43 days

期刊介绍： The European journal of psychiatry is a quarterly publication founded in 1986 and directed by Professor Seva until his death in 2004. It was originally intended to report “the scientific activity of European psychiatrists” and “to bring about a greater degree of communication” among them. However, “since scientific knowledge has no geographical or cultural boundaries, is open to contributions from all over the world”. These principles are maintained in the new stage of the journal, now expanded with the help of an American editor.