Schizophrenia and increased distrust-based competitiveness in interpersonal interactions: a serial process model
Schizophrenia and increased distrust-based competitiveness in interpersonal interactions: a serial process model
Background and Hypothesis: game theory paradigms, such as the Prisoner’s Dilemma Game (PDG), have been used to study nonclinical paranoia, though research using clinical populations has been scarce. We test our novel theoretical model that schizophrenia leads to competitiveness in interpersonal interactions, and that this link is serially mediated by trait paranoia, state paranoia, and distrust.
Study Design: in this quasi-experimental study, individuals with schizophrenia spectrum diagnoses with current persecutory delusions (n = 46) and a nonclinical control group (n = 43) played the PDG, and completed measures of trait paranoia, state paranoia, and distrust.
Study Results: individuals with schizophrenia competed more in the PDG than the control group. Supporting our theoretical model, all direct effects were significant: schizophrenia was associated with higher trait paranoia (H1); trait paranoia predicted state paranoia in the PDG (H2); state paranoia in the PDG predicted distrust of the opponent in the PDG (H3); and distrust predicted competition in the PDG (H4). The hypothesized indirect effect of schizophrenia on competition in the PDG via trait paranoia, state paranoia, and distrust was supported in a serial mediation model (H5).
Conclusions: the findings make clear theoretical and methodological contributions. We provide the first evidence for a theoretical process model by which schizophrenia leads to competitiveness in interpersonal interactions via trait paranoia, state paranoia, and distrust. Game theory paradigms, and the PDG in particular, are important for advancing theory and research on paranoia as it occurs in both clinical and nonclinical populations.
competition, distrust, paranoia, persecutory delusions, prisoner’s dilemma game, schizophrenia, prisoner's dilemma game
1088-1094
Ellett, Lyn
96482ea6-04b6-4a50-a7ec-ae0a3abc20ca
Wildschut, Tim
4452a61d-1649-4c4a-bb1d-154ec446ff81
Chadwick, Paul
4476b67c-8555-49a5-b6e5-3f756d13d5bd
1 July 2023
Ellett, Lyn
96482ea6-04b6-4a50-a7ec-ae0a3abc20ca
Wildschut, Tim
4452a61d-1649-4c4a-bb1d-154ec446ff81
Chadwick, Paul
4476b67c-8555-49a5-b6e5-3f756d13d5bd
Ellett, Lyn, Wildschut, Tim and Chadwick, Paul
(2023)
Schizophrenia and increased distrust-based competitiveness in interpersonal interactions: a serial process model.
Schizophrenia Bulletin, 49 (4), .
(doi:10.1093/schbul/sbad021).
Abstract
Background and Hypothesis: game theory paradigms, such as the Prisoner’s Dilemma Game (PDG), have been used to study nonclinical paranoia, though research using clinical populations has been scarce. We test our novel theoretical model that schizophrenia leads to competitiveness in interpersonal interactions, and that this link is serially mediated by trait paranoia, state paranoia, and distrust.
Study Design: in this quasi-experimental study, individuals with schizophrenia spectrum diagnoses with current persecutory delusions (n = 46) and a nonclinical control group (n = 43) played the PDG, and completed measures of trait paranoia, state paranoia, and distrust.
Study Results: individuals with schizophrenia competed more in the PDG than the control group. Supporting our theoretical model, all direct effects were significant: schizophrenia was associated with higher trait paranoia (H1); trait paranoia predicted state paranoia in the PDG (H2); state paranoia in the PDG predicted distrust of the opponent in the PDG (H3); and distrust predicted competition in the PDG (H4). The hypothesized indirect effect of schizophrenia on competition in the PDG via trait paranoia, state paranoia, and distrust was supported in a serial mediation model (H5).
Conclusions: the findings make clear theoretical and methodological contributions. We provide the first evidence for a theoretical process model by which schizophrenia leads to competitiveness in interpersonal interactions via trait paranoia, state paranoia, and distrust. Game theory paradigms, and the PDG in particular, are important for advancing theory and research on paranoia as it occurs in both clinical and nonclinical populations.
Text
PDG Clinical Paper_Accepted Manuscript
- Accepted Manuscript
More information
Accepted/In Press date: 15 February 2023
e-pub ahead of print date: 13 March 2023
Published date: 1 July 2023
Additional Information:
© The Author(s) 2023. Published by Oxford University Press on behalf of the Maryland Psychiatric Research Center. All rights reserved. For permissions, please email: journals.permissions@oup.com.
Keywords:
competition, distrust, paranoia, persecutory delusions, prisoner’s dilemma game, schizophrenia, prisoner's dilemma game
Identifiers
Local EPrints ID: 475882
URI: http://eprints.soton.ac.uk/id/eprint/475882
ISSN: 0586-7614
PURE UUID: dcc77759-d953-4601-8915-f60fb576ef80
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Date deposited: 29 Mar 2023 16:53
Last modified: 17 Mar 2024 07:42
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Author:
Paul Chadwick
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