Browse

Measuring psychosis proneness in a nonclinical Korean population: is the Peters et al Delusions Inventory useful for assessing high-risk individuals?

Cited 12 time in Web of Science Cited 15 time in Scopus
Authors
Jung, Hee Yeon; Chang, Jae Seung; Yi, Jung Seo; Hwang, Samuel; Shin, Hyun-Kyun; Kim, Jong Hoon; Cho, In Hee; Kim, Yong Sik
Issue Date
2008-02-05
Publisher
Elsevier
Citation
Compr Psychiatry. 2008 ;49(2):202-10.
Keywords
AdolescentAdultAgedAsian Continental Ancestry Group/*ethnologyDelusions/*diagnosis/*ethnologyFemaleHumansMaleMiddle AgedPrevalencePsychotic Disorders/*diagnosis/*ethnology/psychology*QuestionnairesRisk FactorsSeverity of Illness Index
Abstract
OBJECTIVES: We examined the psychometric properties of the Korean version of the Peters et al Delusions Inventory (PDI) 40 and investigated the distribution of delusional ideation in a nonclinical population. We also used the item response theory to evaluate the usefulness of the PDI in measuring the risk for psychosis. METHODS: A total of 310 nonclinical individuals completed the Korean PDI-40, the Magical Ideation Scale (MIS), and the Schizotypal Personality Scale (STA). In addition, 60 psychotic inpatients with delusions completed the PDI-40. Among 310 individuals, 124 participated in a follow-up study 6 months after completing their original questionnaire. RESULTS: The PDI-40 revealed a slightly skewed distribution, but the score range was similar to that of the British population. Scores were negatively correlated with age, but no sex differences were found. The Korean PDI-40 exhibited good internal consistency and test-retest reliability. The PDI was significantly correlated with the MIS and the STA. Ten components were extracted through a principal component analysis with varimax rotation. The test results using item response theory revealed 39 items as the items which individuals with very high level of psychosis proneness will answer as "yes." Moreover, all items yielded "above moderate" discrimination in terms of psychosis proneness. CONCLUSIONS: We confirmed the reliability and validity of the Korean PDI-40. The usefulness of the PDI-40 in a nonclinical population was replicated in the Korean sample. The PDI-40 can be used as an informative device when investigating "psychosis proneness" in a group at high risk for psychosis.
ISSN
0010-440X (Print)
Language
English
URI
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&dopt=Citation&list_uids=18243895

https://hdl.handle.net/10371/63317
DOI
https://doi.org/10.1016/j.comppsych.2007.08.011
Files in This Item:
There are no files associated with this item.
Appears in Collections:
College of Medicine/School of Medicine (의과대학/대학원)Psychiatry (정신과학전공)Journal Papers (저널논문_정신과학전공)
  • mendeley

Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse