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Cited by 771Schizophrenia research and treatmentMental Health and PsychiatryHallucinations in medical conditions

The DOI matches its Crossref record; 53 of the 53 references it cites were found in a registry or an index.

Measurement of Delusional Ideation in the Normal Population: Introducing the PDI (Peters et al. Delusions Inventory)

Peters, E. R., Joseph, S. A., Garety, P. A.·1999·Schizophrenia Bulletin
DOI 10.1093/oxfordjournals.schbul.a033401
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Abstract

The Peters et al. Delusions Inventory (PDI) was designed to measure delusional ideation in the normal population, using the Present State Examination as a template. The multidimensionality of delusions was incorporated by assessing measures of distress, preoccupation, and conviction. Individual items were endorsed by one in four adults on average. No sex differences were found, and an inverse relationship with age was obtained. Good internal consistency was found, and its concurrent validity was confirmed by the percentages of common variance with three scales measuring schizotypy, magical ideation, and delusions. PDI scores up to 1 year later remained consistent, establishing its test-retest reliability. Psychotic inpatients had significantly higher scores, establishing its criterion validity. The ranges of scores between the normal and deluded groups overlapped considerably, consistent with the continuity view of psychosis. The two samples were differentiated by their ratings on the distress, preoccupation, and conviction scales, confirming the necessity for a multidimensional analysis of delusional thinking. Possible avenues of research using this scale and its clinical utility are highlighted.

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Crossref · 10.1093/oxfordjournals.schbul.a033401

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Metadata

Authors
Peters, E. R., Joseph, S. A., & Garety, P. A.
Affiliations
  • University of Warwick (GB)
  • University of London (GB)
ORCID
Venue
Schizophrenia Bulletin
Publisher
Oxford University Press (OUP)
Published
1999-01-01
Volume
25
Issue
3
Pages
553-576
ISSN
  • 0586-7614 (ISSN-L)
  • 1745-1701
DOI
10.1093/oxfordjournals.schbul.a033401
OpenAlex
W2067384877
Cited by
771
References
53
Citations by year
2026: 16 · 2025: 22 · 2024: 21 · 2023: 30 · 2022: 27 · 2021: 29 · 2020: 24 · 2019: 28 · 2018: 30 · 2017: 36 · 2016: 28 · 2015: 45 · 2014: 25 · 2013: 40 · 2012: 36
FWCI
6.91
Type
journal article
Language
en
Open access
closed
Locations
  • Schizophrenia Bulletin (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Social Sciences › Arts and Humanities › Philosophy › Mental Health and Psychiatry
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Hallucinations in medical conditions
Keywords
delusional ideation
MeSH terms
Adult, Aged, Delusions, England, Factor Analysis, Statistical, Female, Humans, Male, Middle Aged, Psychiatric Status Rating Scales, Psychometrics, Psychotic Disorders, Reference Values, Sampling Studies, Schizotypal Personality Disorder, Superstitions, Thinking, Reproducibility of Results, Chi-Square Distribution

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