CoChat
Sign Up
Cited by 216Schizophrenia research and treatmentHallucinations in medical conditionsMental Health and Psychiatry

Positive symptomatology and source-monitoring failure in schizophrenia—an analysis of symptom-specific effects

Open access
Brébion, Gildas, Amador, Xavier, David, Anthony, Malaspina, Dolores, Sharif, Zafar, Gorman, Jack M·2000·Psychiatry Research
DOI 10.1016/s0165-1781(00)00174-8
Open this paper in CoChat — free account

Abstract

Recent research has suggested that certain positive symptoms in patients with schizophrenia are linked to self monitoring/reality-monitoring deficits. We wished to investigate the association between such deficits and three specific symptoms: hallucinations, delusions and thought disorganisation. Forty patients with schizophrenia and 40 normal controls were administered a source-monitoring task. Twenty-four items were produced, either verbally by the experimenter, or verbally by the subject, or presented as pictures. Then, subjects were read a recognition list including the produced target items mixed with distractors. They were required to recognise the target items and to remember their source of production. The pattern of memory deficits has previously been reported (Brébion, G., Smith, M., Gorman, J., Amador, X., 1997. Discrimination accuracy and decision biases in different types of reality monitoring in schizophrenia. Journal of Nervous and Mental Disease 185, 247-253). The current analyses focussed on the false recognition of distractors, and on the errors in the source attribution of the recognised target items. Results showed that higher hallucination scores were associated with an increased tendency towards false recognition of non-produced items. In addition, hallucinators were more prone than control subjects to misattribute to another source the items they had produced themselves. Furthermore, hallucinators and delusional patients were more prone than the other patients to report that spoken items had been presented as pictures. This latter finding suggests that both hallucinations and delusions are associated with confusion between imagined and perceived pictures. Our previous report stated that only one of the three investigated types of response bias was associated with global positive symptomatology. However, this finer-grained analysis revealed that the three of them were in fact associated with hallucinations and/or delusions. On the other hand, thought disorganisation appeared to be independent from these mechanisms.

Integrity signals

Registry

Crossref · 10.1016/s0165-1781(00)00174-8

Cites

32 of 32 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

We couldn’t retrieve this paper’s full text, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Behavioral experiments have confirmed corollary discharge dysfunction in schizophrenia.

    “Frith expanded this concept (Frith, 1987) and prompted a series of behavioral experiments confirming corollary discharge dysfunction in schizophrenia (Brebion, et al., 2000; Frith, Blakemore, & Wolpert, 2000; Lindner, Thier, Kircher, Haarmeier, & Leube, 2005; Shergill, Samson, Bays, Frith, & Wolpert, 2005; Stirling, Hellewell, & Quraishi, 1998; Turken, Vuilleumier, Mathalon, Swick, & Ford, 2003).”

    From Anticipating the future: Automatic prediction failures in schizophrenia (2012) · cites this paper as Brebion, et al., 2000

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Related

Authors
Brébion, G., Amador, X., David, A., Malaspina, D., Sharif, Z., & Gorman, J. M.
Affiliations
  • New York State Psychiatric Institute (US)
  • Creedmoor Psychiatric Center (US)
Corresponding author
Brébion, Gildas
ORCID
Venue
Psychiatry Research
Publisher
Elsevier BV
Published
2000-08
Volume
95
Issue
2
Pages
119-131
ISSN
0165-1781 (ISSN-L)
DOI
10.1016/s0165-1781(00)00174-8
OpenAlex
W2012407532
Cited by
216
References
32
Citations by year
2026: 2 · 2025: 2 · 2024: 4 · 2023: 6 · 2022: 2 · 2021: 6 · 2020: 9 · 2019: 11 · 2018: 6 · 2017: 6 · 2016: 8 · 2015: 6 · 2014: 9 · 2013: 16 · 2012: 21
FWCI
4.42
Type
journal article
Language
en
Open access
Licence
Locations
  • Psychiatry Research (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • Research Portal (King's College London) (submittedVersion)
Funders
  • Yale University
  • Schizophrenia Research Fund
  • National Institutes of Health (5p20mh050727-04)
  • National Institute of Mental Health (5P20MH-50727)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Hallucinations in medical conditions
  • Social Sciences › Arts and Humanities › Philosophy › Mental Health and Psychiatry
Keywords
schizophrenia, positive symptoms, source monitoring, hallucinations, delusions, false recognition, source attribution, memory impairment, reality monitoring
MeSH terms
Adult, Cognition Disorders, Delusions, Female, Hallucinations, Humans, Imagination, Male, Neuropsychological Tests, Psychiatric Status Rating Scales, Reality Testing, Schizophrenia, Thinking

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review