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Invariance of factor structure of the 21-item Peters et al. Delusions Inventory (PDI-21) over time and across samples
Wang, Yan-Yu1,2,3; Shi, Hai-Song1,4; Liu, Wen-Hua5; Yan, Chao6,7; Wang, Yi1; Chiu, Chui-de8; So, Suzanne H.8; Lui, Simon S. Y.1,9; Cheung, Eric F. C.9; Chan, Raymond C. K.1,3
2017-08-01
发表期刊PSYCHIATRY RESEARCH
ISSN0165-1781
文章类型Article
卷号254期号:0页码:190-197
摘要

The present study aimed to explore the latent structure of the 21-item Peters et al. Delusions Inventory (PDI-21) and to test the invariance of its factor structure over time and across samples. The PDI-21 was administered in two samples; one consisting of 1655 undergraduate students investigated in three waves, each separated by six months; and another consisting of 196 outpatients with schizophrenia. Exploratory factor analysis was performed to explore the internal structure of the PDI-21 based on number of beliefs and the grand total scores separately. The number of factors was determined by optimal implementation of parallel analysis. Confirmatory factor analysis, cross-time and cross-sample invariance analyses were carried out with Mplus. Both exploratory factor analysis and the optimal implementation of parallel analysis (based on the number of beliefs and the total score of the PDI-21) suggested a one-factor solution. However, the confirmatory factor analysis revealed a single dimension structure based on number of beliefs only, which exhibited goodness of fit and stability across time and samples. Our study demonstrated a single-dimension structure of the PDI-21, which can be widely used in screening the number of delusional ideations both in clinical and non-clinical populations.

关键词The 21-item Peters et al. Delusions Inventory (PDI-21) Delusion Schizophrenia Longitudinal invariance Cross-sample invariance
DOI10.1016/j.psychres.2017.04.053
收录类别SCI ; SSCI
语种英语
项目资助者National Science Fund China(81088001 ; Beijing Training Project for the Leading Talents in S T(Z151100000315020) ; CAS/SAFEA International Partnership Programme for Creative Research Teams(Y2CX131003) ; Croucher Foundation Startup Fund ; CAS Key Laboratory of Mental Health, Institute of Psychology ; 91132701)
WOS研究方向Psychiatry
WOS类目Psychiatry
WOS记录号WOS:000404498600029
WOS标题词Science & Technology ; Life Sciences & Biomedicine
关键词[WOS]EXPLORATORY FACTOR-ANALYSIS ; PSYCHOTIC-LIKE EXPERIENCES ; GENERAL-POPULATION ; PSYCHOMETRIC PROPERTIES ; PARALLEL ANALYSIS ; RISK INDIVIDUALS ; FIT INDEXES ; IDEATION ; CONTINUUM ; MODEL
引用统计
被引频次[WOS]:0
文献类型期刊论文
条目标识符http://ir.psych.ac.cn/handle/311026/21591
专题中国科学院心理健康重点实验室
作者单位1.Chinese Acad Sci, Inst Psychol, CAS Key Lab Mental Hlth, Neuropsychol & Appl Cognit Neurosci Lab, Beijing, Peoples R China
2.Weifang Med Univ, Dept Psychol, Weifang, Shandong Provin, Peoples R China
3.Univ Chinese Acad Sci, Dept Psychol, Beijing, Peoples R China
4.North China Elect Power Univ, Beijing, Peoples R China
5.Guangzhou Med Univ, Fac Hlth Management, Guangzhou, Guangdong, Peoples R China
6.East China Normal Univ, Sch Psychol & Cognit Sci, Key Lab Brain Funct Genom MOE, Shanghai, Peoples R China
7.East China Normal Univ, Sch Psychol & Cognit Sci, STCSM, Shanghai, Peoples R China
8.Chinese Univ Hong Kong, Dept Psychol, Hong Kong, Hong Kong, Peoples R China
9.Castle Peak Hosp, Hong Kong, Hong Kong, Peoples R China
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GB/T 7714
Wang, Yan-Yu,Shi, Hai-Song,Liu, Wen-Hua,et al. Invariance of factor structure of the 21-item Peters et al. Delusions Inventory (PDI-21) over time and across samples[J]. PSYCHIATRY RESEARCH,2017,254(0):190-197.
APA Wang, Yan-Yu.,Shi, Hai-Song.,Liu, Wen-Hua.,Yan, Chao.,Wang, Yi.,...&Chan, Raymond C. K..(2017).Invariance of factor structure of the 21-item Peters et al. Delusions Inventory (PDI-21) over time and across samples.PSYCHIATRY RESEARCH,254(0),190-197.
MLA Wang, Yan-Yu,et al."Invariance of factor structure of the 21-item Peters et al. Delusions Inventory (PDI-21) over time and across samples".PSYCHIATRY RESEARCH 254.0(2017):190-197.
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