Healthy people with delusional ideation change their mind with conviction

Rodier, Mitchell, Prévost, Marie, Renoult, Louis ORCID:, Lionnet, Claire, Kwann, Yvonne, Dionne-Dostie, Emmanuelle, Chapleau, Isabelle and Debruille, J. Bruno (2011) Healthy people with delusional ideation change their mind with conviction. Psychiatry Research, 189 (3). pp. 433-439. ISSN 0165-1781

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Emotional distress and reasoning biases are two factors known to contribute to delusions. As a step towards elucidating mechanisms underlying delusions, the main aim of this study was to evaluate a possible “jumping to new conclusions” reasoning bias in healthy people with delusional ideation and its association with emotions. We surveyed 80 healthy participants, measuring levels of depression, anxiety, cognitive error and delusional ideation. Participants completed two versions of the beads task to evaluate their reasoning style. Results showed that people with delusional ideation reached a conclusion after less information, as expected. Interestingly, they also tended to change their conclusions more often than people without delusional ideation and did so with greater conviction. Depression and cognitive errors were strong predictors of delusional ideation but not of reasoning style. We conclude that delusional ideation in non-psychotic individuals is independently predicted by depressive symptoms and by a high conviction in new conclusions.

Item Type: Article
Faculty \ School: Faculty of Social Sciences > School of Psychology
UEA Research Groups: Faculty of Social Sciences > Research Groups > Cognition, Action and Perception
Depositing User: Pure Connector
Date Deposited: 11 Dec 2014 14:36
Last Modified: 09 Jan 2024 01:26
DOI: 10.1016/j.psychres.2011.06.018


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