Psychometric properties of Peters et al. Delusions Inventory-21 in adolescence
- Authors
- Kim, Yeni; Chang, Jae Seung; Hwang, Samuel; Yi, Jung Seo; Cho, In Hee; Jung, Hee Yeon
- Issue Date
- 30-May-2013
- Publisher
- ELSEVIER IRELAND LTD
- Keywords
- Adolescence; Delusion proneness; Item response theory; Magical Ideation Scale; Peters et al. Delusions Inventory-21
- Citation
- PSYCHIATRY RESEARCH, v.207, no.3, pp.189 - 194
- Journal Title
- PSYCHIATRY RESEARCH
- Volume
- 207
- Number
- 3
- Start Page
- 189
- End Page
- 194
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/14529
- DOI
- 10.1016/j.psychres.2012.09.002
- ISSN
- 0165-1781
- Abstract
- We explored the psychometric properties of the Korean version of the Peters et al. Delusions Inventory-21 (PDI -21) and evaluated the item characteristics of the PDI-21 compared with the Magical Ideation Scale (MIS) in Korean community adolescents. Survey participants comprised 310 Year 10 students who were assessed with the following instruments: the PDI-21, the MIS, the Schizotypal Personality Scale (STA) and the Symptom Checklist-90-R (SCL-90-R). The item characteristics of the PDI-21 and MIS were also explored using item response theory (IRT). The PDI-21 exhibited good internal consistency and demonstrated significant correlations with the MIS, STA and all subscale scores of the SCL-90-R, indicating psychological distress in adolescents with high PDI-21 scores. We also found through IRT analysis that the PDI-21 provides more information at the lower range and the MIS at the higher range of delusion proneness. Our findings suggest that the PDI-21 is an effective and reliable self-report measure for assessment of delusion proneness and that the PDI-21 and the MIS may be used complementarily to assess a broad range of delusion proneness among community adolescents. (C) 2012 Elsevier Ireland Ltd. All rights reserved.
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