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Article: Screening and assessing ideas and delusions of reference using a semi-structured interview scale: A validation study of the Ideas of Reference Interview Scale (IRIS) in early psychosis patients

TitleScreening and assessing ideas and delusions of reference using a semi-structured interview scale: A validation study of the Ideas of Reference Interview Scale (IRIS) in early psychosis patients
Authors
KeywordsAssessment
Delusions
Psychotic disorders
Schizophrenia
Self-reference
Issue Date2012
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/schres
Citation
Schizophrenia Research, 2012, v. 135 n. 1-3, p. 158-163 How to Cite?
AbstractBackground: Ideas and delusions of reference (IOR/DOR) are an important but underrecognized research target. Difficulty in their reliable assessment has been a barrier. A screening and assessment tool incorporating a self-information processing framework, the Ideas of Reference Interview Scale (IRIS), was developed and validated in patients with early psychosis. Methods: Comprehensive review of IOR/DOR phenomena in the literature and pilot interviews were conducted for scale item development. Self-referential themes were summarized into 15 items. A consecutive sample of 137 outpatients with early psychosis was interviewed using IRIS. Their IOR/DOR experiences were also rated independently by clinicians on the Scale for the Assessment of Positive Symptoms (SAPS) and self-rated using the IOR subscale on the Schizotypal Personality Questionnaire (SPQ). Inter-rater reliability of IRIS was examined in a subsample of 15 participants. Results: IRIS demonstrated good internal consistency (Cronbach's alpha 0.80), inter-rater reliability (intraclass correlation coefficient 0.95), and divergent validity with other symptoms. IRIS correlated satisfactorily with the IOR/DOR item or subscale on SAPS and SPQ (Spearman's rho = 0.71 and 0.47, respectively). Discussion: IRIS provided a reliable high-resolution tool for progressing single-symptom research into IOR/DOR, a potential target feature of schizophrenia. The scale allows future investigation into self-referential processing and detailed phenomenological comparison in different clinical, subclinical, and healthy populations. © 2011 Elsevier B.V.
Persistent Identifierhttp://hdl.handle.net/10722/159821
ISSN
2015 Impact Factor: 4.453
2015 SCImago Journal Rankings: 2.304
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorWong, GHYen_HK
dc.contributor.authorHui, CLMen_HK
dc.contributor.authorTang, JYMen_HK
dc.contributor.authorChiu, CPYen_HK
dc.contributor.authorLam, MMLen_HK
dc.contributor.authorChan, SKWen_HK
dc.contributor.authorChang, WCen_HK
dc.contributor.authorChen, EYHen_HK
dc.date.accessioned2012-08-16T05:57:38Z-
dc.date.available2012-08-16T05:57:38Z-
dc.date.issued2012en_HK
dc.identifier.citationSchizophrenia Research, 2012, v. 135 n. 1-3, p. 158-163en_HK
dc.identifier.issn0920-9964en_HK
dc.identifier.urihttp://hdl.handle.net/10722/159821-
dc.description.abstractBackground: Ideas and delusions of reference (IOR/DOR) are an important but underrecognized research target. Difficulty in their reliable assessment has been a barrier. A screening and assessment tool incorporating a self-information processing framework, the Ideas of Reference Interview Scale (IRIS), was developed and validated in patients with early psychosis. Methods: Comprehensive review of IOR/DOR phenomena in the literature and pilot interviews were conducted for scale item development. Self-referential themes were summarized into 15 items. A consecutive sample of 137 outpatients with early psychosis was interviewed using IRIS. Their IOR/DOR experiences were also rated independently by clinicians on the Scale for the Assessment of Positive Symptoms (SAPS) and self-rated using the IOR subscale on the Schizotypal Personality Questionnaire (SPQ). Inter-rater reliability of IRIS was examined in a subsample of 15 participants. Results: IRIS demonstrated good internal consistency (Cronbach's alpha 0.80), inter-rater reliability (intraclass correlation coefficient 0.95), and divergent validity with other symptoms. IRIS correlated satisfactorily with the IOR/DOR item or subscale on SAPS and SPQ (Spearman's rho = 0.71 and 0.47, respectively). Discussion: IRIS provided a reliable high-resolution tool for progressing single-symptom research into IOR/DOR, a potential target feature of schizophrenia. The scale allows future investigation into self-referential processing and detailed phenomenological comparison in different clinical, subclinical, and healthy populations. © 2011 Elsevier B.V.en_HK
dc.languageengen_US
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/schresen_HK
dc.relation.ispartofSchizophrenia Researchen_HK
dc.subjectAssessmenten_HK
dc.subjectDelusionsen_HK
dc.subjectPsychotic disordersen_HK
dc.subjectSchizophreniaen_HK
dc.subjectSelf-referenceen_HK
dc.subject.meshDelusions - diagnosis-
dc.subject.meshDelusions - etiology-
dc.subject.meshInterview, Psychological - methods-
dc.subject.meshMass Screening - methods-
dc.subject.meshPsychotic Disorders - complications-
dc.titleScreening and assessing ideas and delusions of reference using a semi-structured interview scale: A validation study of the Ideas of Reference Interview Scale (IRIS) in early psychosis patientsen_HK
dc.typeArticleen_HK
dc.identifier.emailChiu, CPY: chiupyc@hku.hken_HK
dc.identifier.emailLam, MML: maylam11@hku.hken_HK
dc.identifier.emailChang, WC: changwc@hku.hken_HK
dc.identifier.emailChen, EYH: eyhchen@hku.hken_HK
dc.identifier.authorityChiu, CPY=rp00291en_HK
dc.identifier.authorityLam, MML=rp00296en_HK
dc.identifier.authorityChang, WC=rp01465en_HK
dc.identifier.authorityChen, EYH=rp00392en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.schres.2011.12.006en_HK
dc.identifier.pmid22244183-
dc.identifier.scopuseid_2-s2.0-84857237446en_HK
dc.identifier.hkuros204594en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-84857237446&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume135en_HK
dc.identifier.issue1-3en_HK
dc.identifier.spage158en_HK
dc.identifier.epage163en_HK
dc.identifier.isiWOS:000300940000028-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridWong, GHY=24465754400en_HK
dc.identifier.scopusauthoridHui, CLM=35734149500en_HK
dc.identifier.scopusauthoridTang, JYM=35086815700en_HK
dc.identifier.scopusauthoridChiu, CPY=8627115700en_HK
dc.identifier.scopusauthoridLam, MML=13106178700en_HK
dc.identifier.scopusauthoridChan, SKW=55039018700en_HK
dc.identifier.scopusauthoridChang, WC=26643706700en_HK
dc.identifier.scopusauthoridChen, EYH=7402315729en_HK
dc.identifier.citeulike10237374-

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