Optimization of a multinomial model for investigating hallucinations and delusions with source monitoring

Schizophrenia Research
Todd S WoodwardR S Keefe

Abstract

Studies of source monitoring have played an important role in cognitive investigations of the inner/outer confusions that characterize hallucinations and delusions in schizophrenia, and multinomial modelling is a statistical/cognitive modelling technique that provides a powerful method for analyzing source monitoring data. The purpose of the current work is to describe how multinomial models can be optimized to answer direct questions about hallucinations and delusions in schizophrenia research. To demonstrate this, we present a reanalysis of previously published source monitoring data, comparing a group of patients with schneiderian first rank symptoms to a group without schneiderian first rank symptoms. The main findings of this analysis were (1) impaired recognition of self-generated items and (2) evidence that impaired source discrimination of perceived items is accompanied by an internalization bias in the target symptom group. Statistical and cognitive interpretations of the findings are discussed.

Citations

Aug 30, 2008·Schizophrenia Bulletin·Flavie A V Waters, Johanna C Badcock
Jun 4, 2011·Behavior Research Methods·Yuan YouHuan Qi
Feb 24, 2006·Journal of Abnormal Psychology·Steffen Moritz, Todd S Woodward
Nov 6, 2007·Cognitive Neuropsychiatry·Todd S WoodwardJennifer C Whitman
Dec 15, 2010·Schizophrenia Research·Liang WangTodd S Woodward
Aug 1, 2009·Schizophrenia Research·Mathieu B BrodeurMartin Lepage
Sep 12, 2009·The British Journal of Clinical Psychology·Martin DebbanéStephan Eliez
May 31, 2007·British Journal of Psychology·Niall GalbraithNeil Morris
Aug 19, 2015·Frontiers in Psychiatry·Henriette D HeeringNeeltje E M van Haren
Nov 26, 2015·PloS One·Antonia Krefeld-SchwalbMargit E Oswald
Dec 17, 2009·The Journal of Nervous and Mental Disease·Flavie A V Waters, Johanna C Badcock
May 19, 2007·Harvard Review of Psychiatry·Frank Larøi, Todd S Woodward
Sep 18, 2010·European Archives of Psychiatry and Clinical Neuroscience·Todd S Woodward, Mahesh Menon
Apr 11, 2008·Canadian Journal of Psychiatry. Revue Canadienne De Psychiatrie·Martin LepagePhilippe-Olivier Harvey

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