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Impairment of self-monitoring: part of the endophenotypic risk for psychosis

  • Dagmar Versmissen (a1), Inez Myin-Germeys (a2), Ilse Janssen (a3), Nicolas Franck (a1), Nicolas Georgieff (a2), Joosta Campo (a4), Ron Mengelers (a2), Jim Van Os (a2) and Lydia Krabbendam (a2)...
Abstract
Background

A disorder of self-monitoring may underlie the positive symptoms of psychosis. The cognitive mechanisms associated with these symptoms may also be detectable in individuals at risk of psychosis

Aims

To investigate (a) whether patients with psychosis show impaired self-monitoring, (b) to what degree this is associated with positive symptoms, and (c) whether this is associated with liability to psychotic symptoms

Method

The sample included: individuals with a lifetime history of non-affective psychosis (n=37), a genetically defined risk group (n=41), a psychometrically defined risk group (n=40), and control group (n=49). All participants carried out an action-recognition task

Results

Number of action – recognition errors was associated with psychosis risk (OR linear trend over 3 levels: 1.12, 95% CI 1.04–1.20) and differential error rate was associated with the degree of delusional ideation in a dose–response fashion (OR linear trend over 3 levels: 1.13, 95% CI 1.00–1.26)

Conclusions

Alterations in self-monitoring are associated with psychosis with evidence of specificity for delusional ideation. In the risk state, this is expressed more as failure to recognise self-generated actions, whereas in illness failure to recognise alien sources come to the fore

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Copyright
Corresponding author
Dr Lydia Krabbendam, Department of Psychiatry and Neuropsychology, Maastricht University, PO BOX 616 (VIJV), 6200 MD Maastricht, the Netherlands. Tel: ++31 43 3688682; fax: ++31 43 3688689; email: l.krabbendam@sp.unimaas.nl
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Declaration of interest

None.

Footnotes
References
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  • ISSN: 0007-1250
  • EISSN: 1472-1465
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Impairment of self-monitoring: part of the endophenotypic risk for psychosis

  • Dagmar Versmissen (a1), Inez Myin-Germeys (a2), Ilse Janssen (a3), Nicolas Franck (a1), Nicolas Georgieff (a2), Joosta Campo (a4), Ron Mengelers (a2), Jim Van Os (a2) and Lydia Krabbendam (a2)...
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