Reliability and Validity of the Japanese Version of the Inventory of Psychotic-Like Anomalous Self-Experiences

IF 3.4 3区医学 Q2 PSYCHIATRY

International Journal of Methods in Psychiatric Research Pub Date : 2026-07-19 DOI:10.1002/mpr.70099

Dan Nakamura, Masafumi Mizuno, David Cicero, Yu Arai, Hirohisa Suzuki, Shunsuke Hirose, Takahisa Kasai, Shutaro Sugita, Yoshifumi Nakamura, Stephen Wood, Andrea Polari, Takahiro Nemoto, Barnaby Nelson

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引用次数: 0

Abstract

Objectives

Basic self-disturbance is an abnormality in subjective self-experience and a core feature of schizophrenia. The Inventory of Psychotic-Like Anomalous Self-Experiences (IPASE) is a self-report measure designed to assess basic self-disturbance. Despite its clinical utility, a Japanese version has not yet been established. This study aimed to develop a Japanese version of the IPASE and evaluate its reliability and validity.

Methods

The study included 182 participants (83 individuals with schizophrenia and 99 healthy controls). The Japanese version of the IPASE was administered to all participants, along with the PANSS and YMRS, to assess validity.

Result

All IPASE domain scores and the total score were significantly higher in the schizophrenia group than in healthy controls. The IPASE total score showed good internal consistency (Cronbach's α > 0.80). In the schizophrenia group, the PANSS positive subscale, general psychopathology subscale, and total scores were all significantly positively correlated with IPASE scores. These positive correlations with the positive subscale support convergent validity. ROC analysis indicated that the IPASE total score had good discriminative ability for schizophrenia diagnosis (AUC = 0.851).

Conclusion

The Japanese version of the IPASE demonstrated high reliability and validity.

Abstract Image

查看原文本刊更多论文

日本版《类精神病异常自我体验量表》的信度和效度。

目的：基本自我障碍是一种主观自我体验异常，是精神分裂症的核心特征。类精神病异常自我体验量表（IPASE）是一种评估基本自我障碍的自我报告量表。尽管其临床应用，日本的版本尚未建立。本研究旨在编制日文IPASE量表，并评估其信度和效度。方法：研究纳入182名参与者（83名精神分裂症患者和99名健康对照）。对所有参与者进行日文IPASE，以及PANSS和YMRS，以评估有效性。结果：精神分裂症组IPASE各域评分及总分均显著高于健康对照组。IPASE总分具有良好的内部一致性（Cronbach's α > 0.80）。精神分裂症组PANSS阳性量表、一般精神病理量表和总分均与IPASE得分呈显著正相关。这些正相关与正分量表支持收敛效度。ROC分析显示，IPASE总分对精神分裂症诊断具有较好的判别能力（AUC = 0.851）。结论：日文版IPASE量表具有较高的信效度。

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.